We installed a new ac/furnace this year. where do I enter that.

[PaulaM]

Energy efficient air conditioners and furnaces do qualify for tax credits. See links below for requirements.

• In your open return, select My Account
• Tools
• Topic Search
• Type 'energy improvements' in the box, then select GO

You should land on the page, Energy-Saving Home Improvements. Scroll all the way down to see the entire page and select the Yes radio button and continue.

On the page, Tell Us How Much You Paid for Energy-Saving Improvements, use the box for Energy-Efficient Build Property. If you click on the learn more link, it specifically mentions air conditioners.

https://ttlc.intuit.com/questions/1899863-can-i-claim-energy-efficient-appliances-or-energy-saving-h... 

https://www.energystar.gov/about/federal_tax_credits/heating_ventilating_air_conditioning