Hello. In 2021, we installed a new, energy efficient central air conditioner in our home. Can I apply this tax credit to our taxes this year?

[cmbence]

I was not aware of the tax credit for that tax year so I am wondering if we can apply the credit now.

[Opus 17]

No.  You would have to amend your 2021 return and claim it then, if you were eligible.

[DoninGA]

No, not on a 2023 tax return.  There was a $300 credit for the A/C unit in tax year 2021 so if you want this credit you will have to amend the 2021 tax return since that is when the unit was purchased and installed.

See this TurboTax support FAQ for amending a tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-a...