<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:67690c0b-3f02-4d5a-bd78-57a429197991,g:c8ef32e5-d0ba-4d97-a56d-e7b4005c3350-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.emcorgroup.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="eme-20250930.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1b5e3806-f640-4e3f-b0bf-045823be25f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_c6aee940-3c17-4e9d-8f13-20a44b403609" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1b5e3806-f640-4e3f-b0bf-045823be25f7" xlink:to="loc_us-gaap_StockholdersEquity_c6aee940-3c17-4e9d-8f13-20a44b403609" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_45e1d7ef-29f8-4578-9010-2c1d5df65412" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1b5e3806-f640-4e3f-b0bf-045823be25f7" xlink:to="loc_us-gaap_MinorityInterest_45e1d7ef-29f8-4578-9010-2c1d5df65412" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_54412f6a-26fb-46cd-b502-df38560edca6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_854d5872-45b3-4439-9c16-d430ee480537" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_54412f6a-26fb-46cd-b502-df38560edca6" xlink:to="loc_us-gaap_AssetsCurrent_854d5872-45b3-4439-9c16-d430ee480537" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_d6b8a147-9d8a-4633-a31b-1d75fe8e7aca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_54412f6a-26fb-46cd-b502-df38560edca6" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_d6b8a147-9d8a-4633-a31b-1d75fe8e7aca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_bf7a7298-6ede-4b34-87b9-52a79263cc7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_54412f6a-26fb-46cd-b502-df38560edca6" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_bf7a7298-6ede-4b34-87b9-52a79263cc7a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_a357e197-6b13-4e38-90c8-84984e329b40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_54412f6a-26fb-46cd-b502-df38560edca6" xlink:to="loc_us-gaap_Goodwill_a357e197-6b13-4e38-90c8-84984e329b40" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_98083ee7-cb79-4c08-9e62-604f088fda01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_54412f6a-26fb-46cd-b502-df38560edca6" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_98083ee7-cb79-4c08-9e62-604f088fda01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_bd13b4a7-1c8d-4d1f-b033-57964c93ed1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_54412f6a-26fb-46cd-b502-df38560edca6" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_bd13b4a7-1c8d-4d1f-b033-57964c93ed1c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_eacb68c4-8ce0-4d06-99fe-709c56075b16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_37793aa9-170e-41ec-96ab-251f47c1f813" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_eacb68c4-8ce0-4d06-99fe-709c56075b16" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_37793aa9-170e-41ec-96ab-251f47c1f813" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_74c14d53-6c37-4824-90c7-72ae89553cac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_eacb68c4-8ce0-4d06-99fe-709c56075b16" xlink:to="loc_us-gaap_Liabilities_74c14d53-6c37-4824-90c7-72ae89553cac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_0467888a-7f3e-4dc8-994e-f79144b4325f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_ed8cc44b-6796-44e3-b76c-77dec9d4cb52" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_0467888a-7f3e-4dc8-994e-f79144b4325f" xlink:to="loc_us-gaap_PreferredStockValue_ed8cc44b-6796-44e3-b76c-77dec9d4cb52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_2321d59a-8d57-4020-affa-a0117d32f806" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_0467888a-7f3e-4dc8-994e-f79144b4325f" xlink:to="loc_us-gaap_CommonStockValue_2321d59a-8d57-4020-affa-a0117d32f806" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_684ba43c-2040-48e0-89d3-67051d16434c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_0467888a-7f3e-4dc8-994e-f79144b4325f" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_684ba43c-2040-48e0-89d3-67051d16434c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_907eb251-cd88-4e0a-b081-c73ad54ae829" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_0467888a-7f3e-4dc8-994e-f79144b4325f" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_907eb251-cd88-4e0a-b081-c73ad54ae829" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_50425a3e-5e49-4b63-8d16-0a8031be6c79" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_0467888a-7f3e-4dc8-994e-f79144b4325f" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_50425a3e-5e49-4b63-8d16-0a8031be6c79" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_94ce7033-b543-45bb-8f7f-d0462c8ab52f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockValue"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_0467888a-7f3e-4dc8-994e-f79144b4325f" xlink:to="loc_us-gaap_TreasuryStockValue_94ce7033-b543-45bb-8f7f-d0462c8ab52f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_037d277b-8c4e-4a85-a2cd-436a55523884" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_4edbc35a-2847-45ab-8614-c3c79993f0ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_037d277b-8c4e-4a85-a2cd-436a55523884" xlink:to="loc_us-gaap_LiabilitiesCurrent_4edbc35a-2847-45ab-8614-c3c79993f0ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_0b5b148c-9a94-4129-9fd9-85265ecf9c86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_037d277b-8c4e-4a85-a2cd-436a55523884" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_0b5b148c-9a94-4129-9fd9-85265ecf9c86" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_882be94f-2b21-4c04-9309-eda134217dd9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_037d277b-8c4e-4a85-a2cd-436a55523884" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_882be94f-2b21-4c04-9309-eda134217dd9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_4c6830a7-5392-4b9d-9b41-19d5567ced23" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_81a20c38-f3df-4da7-9808-9d8ee841dcf3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_4c6830a7-5392-4b9d-9b41-19d5567ced23" xlink:to="loc_us-gaap_AccountsPayableCurrent_81a20c38-f3df-4da7-9808-9d8ee841dcf3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_3a42c7d5-7811-47e7-9e40-a89c92f26ece" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_4c6830a7-5392-4b9d-9b41-19d5567ced23" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_3a42c7d5-7811-47e7-9e40-a89c92f26ece" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_95957f10-de26-45c5-b1c8-de7d70c26525" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_4c6830a7-5392-4b9d-9b41-19d5567ced23" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_95957f10-de26-45c5-b1c8-de7d70c26525" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_9ec91a12-8757-4ff9-9954-ac3315bf1810" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_4c6830a7-5392-4b9d-9b41-19d5567ced23" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_9ec91a12-8757-4ff9-9954-ac3315bf1810" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_c417fb30-a242-4ecb-8382-f895e2b3cd4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_4c6830a7-5392-4b9d-9b41-19d5567ced23" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_c417fb30-a242-4ecb-8382-f895e2b3cd4a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_0be0944d-8400-47c4-ac38-6c3e395dcbd5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_4c6830a7-5392-4b9d-9b41-19d5567ced23" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_0be0944d-8400-47c4-ac38-6c3e395dcbd5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_2fb618c4-4271-448e-b038-31a5f91e0d05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_604e1085-5dca-456f-af55-587ca2e7458b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2fb618c4-4271-448e-b038-31a5f91e0d05" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_604e1085-5dca-456f-af55-587ca2e7458b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_80363f17-7ba5-4806-b5df-15863cbf8a26" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2fb618c4-4271-448e-b038-31a5f91e0d05" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_80363f17-7ba5-4806-b5df-15863cbf8a26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_bfbb668b-2c1b-4d2b-ac53-7dc905fc8ef0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2fb618c4-4271-448e-b038-31a5f91e0d05" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_bfbb668b-2c1b-4d2b-ac53-7dc905fc8ef0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessAndRawMaterialsNetOfReserves_c604bc83-3b60-42fa-88e6-ab56eb75f0be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcessAndRawMaterialsNetOfReserves"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2fb618c4-4271-448e-b038-31a5f91e0d05" xlink:to="loc_us-gaap_InventoryWorkInProcessAndRawMaterialsNetOfReserves_c604bc83-3b60-42fa-88e6-ab56eb75f0be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_60dfe0c3-4fa7-4ef7-aeb1-881cd0fe80de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2fb618c4-4271-448e-b038-31a5f91e0d05" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_60dfe0c3-4fa7-4ef7-aeb1-881cd0fe80de" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_0215619f-e963-4ac3-bdf7-69bade4edb90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2fb618c4-4271-448e-b038-31a5f91e0d05" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_0215619f-e963-4ac3-bdf7-69bade4edb90" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/CondensedConsolidatedStatementsOfOperations" xlink:type="simple" xlink:href="eme-20250930.xsd#CondensedConsolidatedStatementsOfOperations"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/CondensedConsolidatedStatementsOfOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_20fbb359-861b-4ade-9de9-a56c2d6de91b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_958fa957-af83-4d1f-bf92-f5c984f04899" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_20fbb359-861b-4ade-9de9-a56c2d6de91b" xlink:to="loc_us-gaap_GrossProfit_958fa957-af83-4d1f-bf92-f5c984f04899" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_31ba0789-7470-4673-be45-1c38464033a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_20fbb359-861b-4ade-9de9-a56c2d6de91b" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_31ba0789-7470-4673-be45-1c38464033a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_2c686a7d-17ad-4977-a6e9-96b95762420e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_32a74a00-1832-4e5b-a57e-824b9b9cfd7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_2c686a7d-17ad-4977-a6e9-96b95762420e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_32a74a00-1832-4e5b-a57e-824b9b9cfd7e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_6209b6f5-d509-4499-825e-534ef351efbc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_2c686a7d-17ad-4977-a6e9-96b95762420e" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_6209b6f5-d509-4499-825e-534ef351efbc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_fe4d115d-6f08-4522-bc72-d8c4404c0f05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_964121a0-687c-4a61-b1b0-b5e93f6687d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_fe4d115d-6f08-4522-bc72-d8c4404c0f05" xlink:to="loc_us-gaap_OperatingIncomeLoss_964121a0-687c-4a61-b1b0-b5e93f6687d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent_1b97c6af-b872-472b-83bb-d6770ed661aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_fe4d115d-6f08-4522-bc72-d8c4404c0f05" xlink:to="loc_us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent_1b97c6af-b872-472b-83bb-d6770ed661aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRevenueExpenseNet_8ace51e9-34c4-44c4-b63a-4e2f3944e5f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRevenueExpenseNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_fe4d115d-6f08-4522-bc72-d8c4404c0f05" xlink:to="loc_us-gaap_InterestRevenueExpenseNet_8ace51e9-34c4-44c4-b63a-4e2f3944e5f9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_22a7ca68-060e-4090-a2db-a60651d4df9d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_5cfff9b7-d84b-4f94-bda1-8417236ce2bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_22a7ca68-060e-4090-a2db-a60651d4df9d" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_5cfff9b7-d84b-4f94-bda1-8417236ce2bc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_c2e12a3a-d700-4da5-b2e3-48ba42871f6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_22a7ca68-060e-4090-a2db-a60651d4df9d" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_c2e12a3a-d700-4da5-b2e3-48ba42871f6f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" xlink:href="eme-20250930.xsd#CondensedConsolidatedStatementsOfComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_abaadcd0-9120-4fbc-8a79-8a642762117d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_dc55b945-439f-4bf8-918b-9375c0e7dde5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_abaadcd0-9120-4fbc-8a79-8a642762117d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_dc55b945-439f-4bf8-918b-9375c0e7dde5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_4bafc8db-40f7-4d92-8fbd-bca50e46c38a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_abaadcd0-9120-4fbc-8a79-8a642762117d" xlink:to="loc_us-gaap_NetIncomeLoss_4bafc8db-40f7-4d92-8fbd-bca50e46c38a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_b9282525-523d-4650-81c7-c5efeda737d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_e1da7958-1a67-4f07-a85e-7e01396f7262" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_b9282525-523d-4650-81c7-c5efeda737d2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_e1da7958-1a67-4f07-a85e-7e01396f7262" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_f46d19cd-7f6a-4438-98e4-3c6761385f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_b9282525-523d-4650-81c7-c5efeda737d2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_f46d19cd-7f6a-4438-98e4-3c6761385f1d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:type="simple" xlink:href="eme-20250930.xsd#CondensedConsolidatedStatementsOfCashFlows"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_916554b2-0217-4b19-aaa5-5d3b4e6f7913" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ab39ade6-b797-4f05-8922-32822aa4b8a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_916554b2-0217-4b19-aaa5-5d3b4e6f7913" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ab39ade6-b797-4f05-8922-32822aa4b8a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_72692ebf-7780-43e9-81d2-0693e8bae857" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_916554b2-0217-4b19-aaa5-5d3b4e6f7913" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_72692ebf-7780-43e9-81d2-0693e8bae857" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7724b309-65b5-4ea1-8877-42da5afa1777" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_916554b2-0217-4b19-aaa5-5d3b4e6f7913" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7724b309-65b5-4ea1-8877-42da5afa1777" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_64ebca94-07d1-44e4-b81f-1423fe47aed3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_916554b2-0217-4b19-aaa5-5d3b4e6f7913" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_64ebca94-07d1-44e4-b81f-1423fe47aed3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_1d9ba98f-a98f-433a-814e-728600bc53b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_1d9ba98f-a98f-433a-814e-728600bc53b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_64af1284-c68b-4dc6-9f16-9c15291b2a28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_64af1284-c68b-4dc6-9f16-9c15291b2a28" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_3007832f-8856-4e6d-8832-08e52ea8ced4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_3007832f-8856-4e6d-8832-08e52ea8ced4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_d7dca937-863b-467b-81f6-ce4bb0ef8613" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_d7dca937-863b-467b-81f6-ce4bb0ef8613" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_670ed3cd-b549-4f93-9c0a-08f755549065" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_670ed3cd-b549-4f93-9c0a-08f755549065" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_bb03873a-b52e-4d24-a77a-c37e8f7c59d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_bb03873a-b52e-4d24-a77a-c37e8f7c59d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockPlans_c54f8e98-cfdc-4c56-8fd8-d8863bc5f396" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromStockPlans"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_ProceedsFromStockPlans_c54f8e98-cfdc-4c56-8fd8-d8863bc5f396" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_eme_PaymentsforContingentConsiderationArrangements_80f95142-47c6-4b66-8947-6a1ee4c8e8a8" xlink:href="eme-20250930.xsd#eme_PaymentsforContingentConsiderationArrangements"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_eme_PaymentsforContingentConsiderationArrangements_80f95142-47c6-4b66-8947-6a1ee4c8e8a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsMinorityInterest_eef25db3-b374-4fbe-a64b-613030647757" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDividendsMinorityInterest"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_70b70fe8-a5e3-4659-8e76-7d1b0394721f" xlink:to="loc_us-gaap_PaymentsOfDividendsMinorityInterest_eef25db3-b374-4fbe-a64b-613030647757" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_cdf10b0d-8f00-4316-8b9e-130174b04d7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_bfec2c6f-0751-457e-96ee-d9dee7699cd7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_cdf10b0d-8f00-4316-8b9e-130174b04d7e" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_bfec2c6f-0751-457e-96ee-d9dee7699cd7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_9a65bed3-10c5-44b7-a052-ffcc5c124aca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_cdf10b0d-8f00-4316-8b9e-130174b04d7e" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_9a65bed3-10c5-44b7-a052-ffcc5c124aca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_e8ae9691-e689-4e30-a445-eae0e5bdd1aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_cdf10b0d-8f00-4316-8b9e-130174b04d7e" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_e8ae9691-e689-4e30-a445-eae0e5bdd1aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_cdb30340-8c9d-4293-9638-0e97670ad8a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:to="loc_us-gaap_NetIncomeLoss_cdb30340-8c9d-4293-9638-0e97670ad8a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_e2c7cef4-b60a-46c9-ba12-b0b9f41695f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:to="loc_us-gaap_Depreciation_e2c7cef4-b60a-46c9-ba12-b0b9f41695f4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_237c00a4-53b2-4108-8b22-4b74d4bd62f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_237c00a4-53b2-4108-8b22-4b74d4bd62f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_1054acf8-b7ff-4d04-a53f-121a211941f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_1054acf8-b7ff-4d04-a53f-121a211941f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_eme_Noncashsharebasedcompensationexpense_d55e75c3-2c39-4c1d-b07a-b3eff7fcf288" xlink:href="eme-20250930.xsd#eme_Noncashsharebasedcompensationexpense"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:to="loc_eme_Noncashsharebasedcompensationexpense_d55e75c3-2c39-4c1d-b07a-b3eff7fcf288" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_9ee21b96-f302-49f7-ba7a-decd5c47a64a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_9ee21b96-f302-49f7-ba7a-decd5c47a64a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapital_8e9e064d-b0b5-4971-a3f8-6f037c3a63a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOperatingCapital"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3845ee09-5d40-4b43-8253-c03d4db62677" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapital_8e9e064d-b0b5-4971-a3f8-6f037c3a63a4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/RevenuefromContractswithCustomersScheduleofContractwithCustomerAssetandLiabilityDetails" xlink:type="simple" xlink:href="eme-20250930.xsd#RevenuefromContractswithCustomersScheduleofContractwithCustomerAssetandLiabilityDetails"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/RevenuefromContractswithCustomersScheduleofContractwithCustomerAssetandLiabilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eme_ContractLiabilitiesNet_e986d75e-3424-4834-b3aa-efef785b3de7" xlink:href="eme-20250930.xsd#eme_ContractLiabilitiesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_155adde7-5455-4c07-8be1-411e063c363a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_eme_ContractLiabilitiesNet_e986d75e-3424-4834-b3aa-efef785b3de7" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_155adde7-5455-4c07-8be1-411e063c363a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_ffb759fb-b424-4bf5-bd8f-b31dcb88a5db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_eme_ContractLiabilitiesNet_e986d75e-3424-4834-b3aa-efef785b3de7" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_ffb759fb-b424-4bf5-bd8f-b31dcb88a5db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_476c4807-ce22-4013-8f49-ad0fcf81bb04" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_eme_ContractLiabilitiesNet_e986d75e-3424-4834-b3aa-efef785b3de7" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_476c4807-ce22-4013-8f49-ad0fcf81bb04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_08a38b59-2da9-4e2d-a8a6-88012ff85bff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_eme_ContractLiabilitiesNet_e986d75e-3424-4834-b3aa-efef785b3de7" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_08a38b59-2da9-4e2d-a8a6-88012ff85bff" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="eme-20250930.xsd#EarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_48dd3ec9-97e7-4daa-bffd-4e208f48231e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_b4058f1c-8f4c-4758-8f63-ba8b4542cad3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_48dd3ec9-97e7-4daa-bffd-4e208f48231e" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_b4058f1c-8f4c-4758-8f63-ba8b4542cad3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_903cf457-3f3c-476a-804d-d877889830ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_48dd3ec9-97e7-4daa-bffd-4e208f48231e" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_903cf457-3f3c-476a-804d-d877889830ec" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/InventoriesDetails" xlink:type="simple" xlink:href="eme-20250930.xsd#InventoriesDetails"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/InventoriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessAndRawMaterialsNetOfReserves_26972435-9db7-4689-b9ce-ee9fe2fdd272" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcessAndRawMaterialsNetOfReserves"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_9959e566-2ea0-4711-8beb-25f851659e53" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryWorkInProcessAndRawMaterialsNetOfReserves_26972435-9db7-4689-b9ce-ee9fe2fdd272" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_9959e566-2ea0-4711-8beb-25f851659e53" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_7fa7a39a-712c-4efe-8001-36bf35afc301" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryWorkInProcessAndRawMaterialsNetOfReserves_26972435-9db7-4689-b9ce-ee9fe2fdd272" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_7fa7a39a-712c-4efe-8001-36bf35afc301" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/FairValueMeasurementsScheduleOfAssetsAndLiabilitiesCarriedAtFairValueMeasuredOnARecurringBasisDetails" xlink:type="simple" xlink:href="eme-20250930.xsd#FairValueMeasurementsScheduleOfAssetsAndLiabilitiesCarriedAtFairValueMeasuredOnARecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/FairValueMeasurementsScheduleOfAssetsAndLiabilitiesCarriedAtFairValueMeasuredOnARecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_a640d583-fbaa-4308-b5aa-56b0c129246f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_fe8690f8-1897-477c-b914-62c175071a3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_a640d583-fbaa-4308-b5aa-56b0c129246f" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_fe8690f8-1897-477c-b914-62c175071a3f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationPlanAssets_cdf7823f-aee9-4d58-9b20-50a48cbe4fb4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredCompensationPlanAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_a640d583-fbaa-4308-b5aa-56b0c129246f" xlink:to="loc_us-gaap_DeferredCompensationPlanAssets_cdf7823f-aee9-4d58-9b20-50a48cbe4fb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_38e19b59-fdfc-4d62-bd1b-aa2d286fab02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_a640d583-fbaa-4308-b5aa-56b0c129246f" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_38e19b59-fdfc-4d62-bd1b-aa2d286fab02" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.emcorgroup.com/role/RetirementPlansComponentsOfNetPeriodicPensionBenefitIncomeCostDetails" xlink:type="simple" xlink:href="eme-20250930.xsd#RetirementPlansComponentsOfNetPeriodicPensionBenefitIncomeCostDetails"/>
  <link:calculationLink xlink:role="http://www.emcorgroup.com/role/RetirementPlansComponentsOfNetPeriodicPensionBenefitIncomeCostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_8a6fb9b4-c7cf-4026-a31c-1a21f47023e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_5f3ec5d6-8316-4155-9bca-5140b6b4f41d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_8a6fb9b4-c7cf-4026-a31c-1a21f47023e1" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_5f3ec5d6-8316-4155-9bca-5140b6b4f41d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_12d0e84e-7fbc-4834-a7c2-eb9696ec68c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_8a6fb9b4-c7cf-4026-a31c-1a21f47023e1" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_12d0e84e-7fbc-4834-a7c2-eb9696ec68c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5bde5567-6e53-4e79-b179-a466f585778b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_8a6fb9b4-c7cf-4026-a31c-1a21f47023e1" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_5bde5567-6e53-4e79-b179-a466f585778b" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
