How do I get a deduction for new furnace and AC unit?

Form 5695 (Residential Energy Credits) is used to calculate tax credits for energy efficient improvements and alternative energy equipment.    To add or remove this form:

1. Open or continue your return
2. Inside TurboTax, search for this exact phrase including the comma and spaces: 5695, residential energy credit
3. Select the Jump to link in your search results
4. At the bottom of the Energy-Saving Home Improvements screen, answer Yes, then select Continue
   • To delete the 5695, answer No, select Continue, and then answer Yes on the following screen to confirm the deletion
5. Follow the instructions to enter your energy-saving improvement costs

If you made energy efficient improvements to your home like energy-saving roofs, windows, skylights, and doors, you'll be able to claim the  Energy Efficient Home Improvement Credit for 10% of amounts paid for qualified energy efficiency improvements, up to a lifetime cap of $500 or fixed dollar amounts ranging from $50 to $300 for energy efficient property, including furnaces, boilers, biomass stoves, heat pumps, water heaters, central air conditioners, and circulating fans.   See Energy Credits