Window Replacement Cost Analysis
Window Replacement Deals in Houston: How to Judge an Offer
The Window Source of Houston is a family-owned, veteran-owned window and door replacement company with an office in Tomball. If you’re looking for window replacement deals in Houston, you’ll find our current offer on our specials page. The offer changes, so check that page for the current one and fill out the form there to claim it.
You can judge a deal by its installed price per window, financing terms, what comes with each window, and the warranty behind it. We give you the exact price for your windows during a free in-home consultation, so you can think it over on your own time.
How our window prices work
We list a price range for each of our TWS 3000, 6000, and 9000 series on our pricing page. Each range covers one installed single-hung vinyl window. We include installation and our Leak Shield installation method in every price at no additional cost.
Style, size, window count, glass package, frame color and finish, and opening condition affect your price. Hinged casements, bay and bow windows, and custom shapes cost more than single-hung windows. Extra Low-E coatings that reflect heat, triple-pane glass, and impact-rated glass each add to a window’s price. We fix rotted framing or old water damage before we install the new window, which adds to the price for those openings.
Financing plans for new windows
We offer four payment plans for window and door projects, with details on our financing page. You can choose a plan, apply, and get approved in under 30 minutes.
- Split payment: Pay 50% up front and the other 50% when the project is complete.
- 0% interest: For residential window and door projects up to $100,000, you can make monthly payments over six months up to five years and pay no interest.
- Fixed rate: Get a low-interest loan with rates starting at 2.99% and repayment terms of five to 25 years, or choose a higher rate for a bigger discount on the whole project’s cost.
- Lower credit scores: We may still have a financing option for you if your FICO score is below 580.
What comes with every window we install
At The Window Source of Houston, we include our Leak Shield system at no extra cost with every installation. At the rough opening, the space in the wall for your window, we apply a flashing membrane, seal every seam and flange with butyl tape, fill the gap between frame and wall with low-expansion foam, and add a final exterior seal. We back the system with our lifetime, transferable Leak Shield Guarantee, and we leave your home spotless.
For all our standard windows, we include our sound reduction package at no extra cost. Every TWS series comes with our lifetime product and labor warranty, and we add accidental glass breakage coverage for the TWS 6000 and 9000. We also offer a free in-home consultation and a detailed estimate, and you don’t have to commit.
How to compare window replacement offers
Every home is different, so one advertised price would be wrong for most homes. Ask each company the same five things and put the answers side by side to see what each offer gives you for the money.
- Price per window, installed: Ask which window style, size, and series the price covers. We give ranges for one single-hung vinyl window, installed.
- What the price includes: Ask if removal, installation, sealing, and cleanup are included. We remove the old window and its frame, install a new one built to your opening, add a Leak Shield seal, and clean up.
- Warranty: Ask what the warranty covers for the product, labor, glass breakage, and installation, how long it lasts, and whether it transfers. We offer an installation warranty that transfers to the next owner.
- Financing terms: Ask about the interest rate, the number of months, and how much is due up front.
- Time to decide: We give you a price to think over on your own time. We don’t use a high-pressure sales pitch.
You’ll find more questions to ask before you hire anyone in this list of installer questions. Your in-home consultation is the time to ask them.
Tax credits and rebates for new windows in 2026
As of September 2026, the federal tax credit for energy-efficient windows and doors has ended. It doesn’t apply to anything installed after December 31, 2025. You can still claim windows installed during 2025 for 2025, and your tax preparer can tell you if the products qualified.
Texas has no state credit to replace the federal one, and its ENERGY STAR sales tax holiday doesn’t cover windows or doors. CenterPoint, Entergy Texas, and TNMP put their rebates toward attic insulation, A/C tune-ups, and air sealing, so those rebates don’t lower the price of replacement windows. You can find details on our energy tax credit page.
Window replacement deal questions
Are any companies offering window replacement deals in Houston right now?
Yes, we offer window replacement deals in Houston, and we keep our current offer on our specials page. We also offer 0% interest financing and other payment plans for your window replacement. At your free in-home consultation, we give you an exact price for the windows you want replaced.
Is the in-home estimate free?
Yes, we offer both the in-home consultation and the detailed estimate for free. We don’t pressure you, and you have no obligation to go ahead.
Can I still get a tax credit for new windows?
No, the federal tax credit ended for windows installed after December 31, 2025. If you installed windows during 2025, you can still claim the credit for that year. Texas has no state credit.
Do I have to replace every window at once?
No, you can start with the windows that need it most and replace the rest later. If you’re planning to replace windows in phases, tell us at the consultation so we can keep the series and colors consistent from room to room.
