A taxpayer may claim a tax credit with respect to expenditures paid or incurred for "Qualified Energy Property" that is installed on or in connection with the taxpayer's principal residence located in the United States and originally placed in service by the taxpayer between January 1, 2010 and December 31, 2017. The maximum amount of tax credit allowable to a taxpayer for all qualifying home improvements under the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010 during the five-year period is a combined total of $500. The law reinstates the lifetime credit caps, which disqualify any homeowner who has claimed more than $500 in 25c tax credits since January 1, 2005, from any further credits. The 2010 Act subsequently modified the definition of “Qualified Energy Efficiency Improvements” and “Residential Energy Property Expenditures” based on their respective definitions in § 25C(c) and (d) as in effect at that time by updating certain efficiency standards and making other changes. As a result of those modifications, for properties placed in service between 2011-2017 taxpayers must rely on the definitions provided in § 25C(c) and (d) as amended by the 2010 Act.

For full details on tax credits available for home heating and cooling systems, visit energystar.gov