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      <marc:subfield code="a">Clean technology (CT) investment tax credit (ITC) technical guide : </marc:subfield>
      <marc:subfield code="b">air-source heat pump systems.</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Guide technique sur le crédit d'impôt à l'investissement (CII) dans les technologies propres : systèmes de thermopompe à air.</marc:subfield>
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      <marc:subfield code="a">"As stated in subsection 127.45(20) of the Income Tax Act, "for the purpose of determining whether a property is a clean technology property, any technical guide, published by the Department of Natural Resources and as amended from time to time, is to apply conclusively with respect to engineering and scientific matters". This technical guide is with respect to the category of clean technology property that is air source heat pump systems. This is the first edition of the Clean Technology (CT) Investment Tax Credit (ITC) Technical Guide: Air Source Heat Pump Systems and it reflects the Income Tax Act and Income Tax Regulations current as of September 29, 2025"--Page [3].</marc:subfield>
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      <marc:subfield code="t">Guide technique sur le crédit d'impôt à l'investissement (CII) dans les technologies propres : </marc:subfield>
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      <marc:subfield code="u">https://natural-resources.canada.ca/taxes/income-tax/corporations/federal-tax-credits/clean-economy-itc/clean-technology-itc/air-source-heat-pump-systems</marc:subfield>
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