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  <xs:element id="lii_U.S.JointVentureTwoMember" abstract="true" name="U.S.JointVentureTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="lii_DebtInstrumentCovenantNetLeverageRatioFollowingMaterialAcquisition" abstract="false" name="DebtInstrumentCovenantNetLeverageRatioFollowingMaterialAcquisition" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
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  <xs:element id="lii_DefinedBenefitPlanPensionAdjustmentUponDivestitureOfBusiness" abstract="false" name="DefinedBenefitPlanPensionAdjustmentUponDivestitureOfBusiness" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="lii_SharebasedCompensationSharesAuthorizedunderNonOptionEquityInstrumentPlansExercisePriceRangeUpperRangeLimit" abstract="false" name="SharebasedCompensationSharesAuthorizedunderNonOptionEquityInstrumentPlansExercisePriceRangeUpperRangeLimit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
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</xs:schema>
