It’s not too late to claim your $300 tax credit if you installed an air source heat pump in 2021!
IRS form 5695 is the one you’re after. Look down to line 22A on page 2 of the form for the proper place to write in $300. Full form instructions and a link to both forms can be found on our website’s ‘Financing and Incentives‘ page under the ‘For Home’ menu tab. The first and second links under ‘Grants, Tax Credits, and Other Incentives’ will take you to the proper IRS page where you can download both forms.
If you are one of the many who now file online with Turbo Tax, here is a page with detailed instructions on how to enter the $300 credit when filing.