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Homeowners in St. Louis—listen up! You have until the end of 2025 to take advantage of valuable federal tax credits for clean-energy and energy-efficient upgrades—whether that means new windows, a geothermal heat pump, or solar panels.
These incentives expire December 31, 2025, and can be claimed when you file your 2025 taxes. Since choosing new windows and scheduling their installation takes time, it’s best to start planning now. We’ll guide you through what you need to know so you can understand the process, move forward with confidence, and get as much money back in your pocket as possible!
Understanding How You Can Receive Tax Credits for Your Replacement Windows in 2025
Home energy upgrades are worthwhile even without tax incentives, often paying back your initial investment over the years as you save on utility bills (and skip high repair bills!). They also make your home’s interior temperature more consistent and more comfortable. This increases your property’s value while helping to decrease your contribution to carbon emissions—something you can feel good about, right?
However, when you add a tax credit on top of the benefits you already receive from new windows, it makes things even sweeter!
How Do I Know if My Home Improvement Project Qualifies for Tax Credits?
Did you know that you can receive a tax credit when you purchase eligible windows and skylights for your principal (primary) residence? Your home must be located in the United States and can include a house, houseboat, mobile home, cooperative apartment, condominium, or manufactured home. Pretty amazing, right?
You can’t claim the credit if you’re a landlord or property owner who doesn’t live in the home, and you can’t claim the tax credit on new construction. Also, if your property is used solely for business, you can’t claim the credit. But, if you use your home partially for business, the credit for eligible clean energy expenses is:
- For business use up to 20%, you can apply for full credit!
- For business use of more than 20%, you can apply for credit based on the share of expenses allocable to non-business use.
Which Window Products Are Eligible for Tax Credits?
Well-insulated windows and skylights create a better seal around your home. Exterior residential windows or skylights must meet the “ENERGY STAR Most Efficient” criteria to be eligible for the 25C Federal Tax Credit. Here’s how to check if your windows apply:
- Use the ENERGY STAR Climate Zone Finder to determine your climate zone.
- Identify the Certified Product Directory number of the product you purchased.
- Search for your Certified Product Directory number in the NFRC Certified Product Directory.
- If the field of your Climate Zone is green, your windows or skylights are eligible for the tax credit. If it’s not shaded green, your product isn’t eligible. It’s that easy!
Are There Limits on Tax Credits I Can Receive from Energy-Efficient Home Improvements?
Yes, the annual limit for an efficiency tax credit is $3,200.
This breaks down to a total limit of $1,200 for a combination of home envelope improvements (like windows, doors, skylights, and insulation), plus furnaces, boilers, and central air conditioners. The maximum amount you can receive from new windows and skylights is $600.
How Can I Maximize My Tax Credits?
Due to the way the combined limits are structured, your tax credits of up to $600 total for new windows and skylights, plus a credit for two doors, could be combined with a credit for a heat pump to reach the annual limit of $3,200.
The Advantages of Choosing a Highly Qualified Window Contractor to Install Your New Windows
When it comes to windows, there are two main players that work together to ensure you get optimal long-term results: quality windows and an experienced contractor to install them.
Here’s what you’ll love about the results you get when you hire our Replacement Windows by Lakeside team to install your new windows:
Expert Installation
- Water-Tight Results — Your windows are only as good as their installation. With meticulous installation techniques, using top-notch water-taping systems and insulated foam, we guarantee water-tight, hassle-free windows.
- Challenging Projects? No Problem! — We’re equipped to handle complex window projects, from creating new openings to securing permits, so you get the windows you’ve been dreaming of and a stress-free installation process.
Highly Trained In-House Installation Crew
- Meticulous Installation — As the exclusive distributor and authorized contractor for Infinity from Marvin Windows in the St. Louis area since 2006, we ensure precise installation.
- Quality Control — Our in-house window installation crews prioritize quality control, so you get the best long-term results.
- Exceptional Warranties — Our window installations are backed by our workmanship warranty and Infinity from Marvin’s manufacturer’s warranty.
Rewarding Tax Incentives
- Windows with Tax Credits — We exclusively install qualifying energy-efficient Infinity from Marvin fiberglass replacement windows. These are premium, durable, energy-efficient products that meet the requirements to receive up to $600 in federal tax credits!
Long-Term Value
- Exceptional Value — Hiring a reputable window contractor (like our team!) to install your new windows ensures you get the long-term performance you deserve from new windows.
- Lifelong Protection — Yes, windows are an investment, but when you choose Infinity from Marvin fiberglass windows, you get lifelong protection. That’s a win!
Get Gorgeous New Windows at a Price You’ll Love with Replacement Windows by Lakeside
It’s pretty great news to find out that new windows come with a tax benefit, right?
At Replacement Windows by Lakeside, our goal is to connect with you and understand your dreams and desires, so we can offer multiple solutions within your budget. We offer flexible financing options with small monthly payments. For more valuable information, check out our Ultimate Guide to Replacement Windows. We look forward to serving you!


