@TomD8 It's not a deduction....but Hasn't the energy efficiency credit for installation of energy efficient doors been re-instated for 2020? ( I would imagine doors includes sliding glass doors ? )
It's still listed in the October DRAFT form 5695 instructions, page 7, line 19b........but the door/sliding door would have to be compliant with version 6.0 of the energy star requirements, and the taxpayer would have to have their door documents that show it meets those limits.
https://www.irs.gov/pub/irs-dft/i5695--dft.pdf
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..( I see Pella claims they have energy star compliant triple pane sliding doors ...but they say nothing about tax credits....though Anderson does: https://www.andersenwindows.com/taxcredit/ ).
The recent Budget bill extended a lot of energy credits 2-4 years, but I can't figure out which might apply to doors/windows for 2021 and beyond.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
