“My husband and I are obsessed with our new windows from The Window Source!! They were delivered in a very short time frame and only took a day to install. Great install crew, very clean, efficient, and paid attention to detail when sealing everything off.”
Window and Door Replacement in Houston, TX
Custom-built windows and doors, a free in-home consultation, and a lifetime limited warranty.

Replacement windows and doors for Houston homes
Every window and door we install is custom built for your home. It starts with a free consultation, where a window and door expert comes to your house to measure and show you options.

Replacement Windows
Double-hung, casement, picture, slider and bay windows, custom built to fit your openings.

Impact & Hurricane Windows
Impact-rated glass for coastal and storm-prone parts of the Houston area.

Energy-Efficient Windows
Low-E, double-pane glass that keeps Texas heat out and cooling bills down.

Entry Doors
Fiberglass and steel front doors with sidelights, transoms and decorative glass.

Patio & French Doors
Sliding glass, hinged patio and French doors that open your home to the backyard.

Storm Doors
Larson storm doors that add ventilation and protect your front door from the weather.
What Houston homeowners say
“I got several quotes, and Jairo was the only one who brought samples and took the time to give us a demonstration. The office stayed in communication with me every step of the way… Edwin’s installation team worked quickly and professionally.”
“Replacing my parents’ original builder-grade windows in their 25+ year old home was one of the best investments they’ve made… They’ve already noticed lower electric bills, less outside noise, and a cooler, more comfortable home that’s much easier to keep at a consistent temperature.”


Owned by David and Margie Mallette
David Mallette is a U.S. Marine Corps veteran who has worked in glass for nearly 30 years. His first company, a commercial glass and glazing business, has finished multimillion-dollar projects for corporate and municipal clients.
David and Margie started The Window Source of Houston to bring that same standard to homeowners. We are based in Tomball, and we don’t use high-pressure sales tactics. Our consultants measure your home, show you samples, and answer your questions so you can decide on your own time.
About our companyHow your project works
We do not consider the job finished until every window and door is installed properly in your home.
01Free consultation
A window and door expert visits your home, measures, and walks you through styles, glass options and pricing.
02We place your order
Once you choose your products, we order them custom built to the measurements of your openings.
03Installation day
We schedule a date that works for you. The crew protects your floors and furniture and cleans up before leaving.
04Lifetime warranty
Your windows are backed by a lifetime limited warranty that also covers the next owner of your home.
Serving Greater Houston from Tomball
We replace windows and doors in homes across Greater Houston, from The Woodlands and Conroe to Katy, Sugar Land and Baytown.
Not sure if we cover your neighborhood? See all service areas or call (281) 547-6900.
Get a price on new windows and doors
Free in-home consultation. Financing available for qualified homeowners.











