Energy Tax Credit

2023 Energy Tax Credit for Qualifying RELIABILT Energy Star Windows & Patio Doors

Earn a federal tax credit of up to $1100 for improving your home’s energy efficiency and comfort with windows and doors. Purchase and install RELIABILT ENERGY STAR® Most Efficient certified windows to claim a federal tax credit of up to $600*, while ENERGY STAR certified patio doors can earn a federal tax credit of up to $500*.

Download the 2023 Manufacturer’s Certification Statement

How Much is the 2023 Energy Tax Credit?

As part of the Inflation Reduction Act of 2022, annual federal tax credits of up to $1200 are available for energy-efficient home envelope improvements ($1100 for qualifying windows and doors) purchased and installed between January 1, 2023, and December 31, 2032.

Window Tax Credit Amount

  • Claim 30% of the project cost, up to $600 maximum.
  • Windows must meet ENERGY STAR Most Efficient certification.
  • Maximum annual amount with no lifetime limit.

Patio Door Tax Credit Amount

  • You can claim 30% of the project cost, up to $500 ($250 per door).
  • Doors must meet ENERGY STAR requirements for your climate zone.
  • Maximum annual amount with no lifetime limit.

Who Can Use the Energy Tax Credit?

Homeowners that complete qualified energy-efficient improvements to their principal residence, including a renovation or addition to their existing home. The home must be in the United States and can include a house, houseboat, mobile home, cooperative apartment, condominium, and manufactured home. New construction homes and rentals are not eligible.

Annual Energy Tax Credit Limits

The Energy Efficient Home Improvement Tax Credit has no lifetime limitation. The annual maximum allows $1,200 in tax credits for all qualifying building envelope components—$1100 for windows and doors. You can maximize your federal tax credit savings each year by making eligible home improvements over time. Visit and for additional energy tax credit details, restrictions and limitations.

How to qualify for the energy tax credit.*

  • Purchase and install ENERGY STAR Most Efficient certified RELIABILT windows or ENERGY STAR certified RELIABILT patio doors between January 1, 2023, and December 31, 2032.
  • Save your purchase documentation, including your sales receipt, a copy of the RELIABILT Manufacturer’s Certification Statement and NFRC Ratings/ENERGY STAR product performance verification. The window/door NFRC Ratings and ENERGY STAR qualification information is printed on the RELIABILT NFRC Label adhered to your window/door.
  • Finally, claim the credit when you file your taxes for the applicable tax year.

Manufacturer’s Certification Statement

It’s important to download and retain the RELIABILT Manufacturer’s Certification Statement as well as the purchase receipt and NFRC label for each eligible patio door, as it may be requested by the Internal Revenue Service (IRS).

RELIABILT Manufacturer’s Certification Statement Download

Find Additional Rebates

You may qualify for additional rebates in your state or community for installing ENERGY STAR certified windows and patio doors. Visit to learn more.

Looking for the 2022 RELIABILT Manufacturer’s Certification Statement?
Click here to download the RELIABILT Manufacturer’s Certification Statement for tax filings between January 1, 2018 and December 31, 2022.

*Select RELIABILT windows can be ordered to meet ENERGY STAR Most Efficient criteria, and RELIABILT patio doors can be ordered with glass packages that qualify in the specific U.S. ENERGY STAR version 6.0 (7.0 after 10/23/23) climate zones when used for replacement, remodeling or home improvement. Please consult your RELIABILT representative when ordering your windows and patio doors to verify that they meet the required ENERGY STAR guidelines. RELIABILT Windows & Doors is not a tax advisor. Please consult your tax planner and review all IRS guidelines.

Low-E and Argon Gas

Learn how Low-E coatings on glass and argon gas filled between glass panes reduces energy usage and improves the year-round comfort of your home.

Understanding Condensation

Learn more about the causes of condensation on windows in your home, as well as ways to reduce or eliminate it.


Looking for ENERGY STAR qualified products? Learn more about the climate zones and performance criteria used to identify ENERGY STAR compliant windows and doors.

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Energy Efficient Glass

With multiple glass options to increase energy efficiency, there is a glass package to fit any climate need and budget. Visit the Glass section of our site to learn more about available options and energy efficiency.

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The RELIABILT Warranty

Every RELIABILT window and patio door is backed by a limited lifetime warranty on vinyl, glass and all working parts. Each product is individually registered with a product identification number, making ordering replacement parts throughout the warranty period easy and efficient.

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Let's Get Started

Schedule a free, no-obligation in-home consultation with Lowe's to get RELIABILT windows and doors for your home today.