“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.”
Tomball Window Replacement From a Local Company
We’re based in Tomball, on Hirschfield Road, so window replacement in Tomball is work for our own neighbors. The Window Source of Houston is owned by David and Margie Mallette, and David is a U.S. Marine Corps veteran.
Our consultants come to your house, measure, show you samples and answer your questions. Nobody gives you a high-pressure pitch at the end, and you decide on your own time.
Call (281) 547-6900 for a free quote.

A veteran-owned company on Hirschfield Road
David served four years in the Marine Corps and has worked in glass for nearly thirty years. His first company, a commercial glass and glazing business, has finished multimillion-dollar projects for corporate and municipal clients, and he and Margie started The Window Source of Houston to bring the same standard to homeowners.
The company runs on the Marine Corps values of honor, courage and commitment. On a window job, that means straight answers on pricing and an installation done right without cutting corners to hit a deadline. Anyone who has served, or is serving now, gets a discount on their project.

Windows in Tomball’s older and newer houses
Tomball has older houses inside the city limits and newer subdivisions around them. By the Census Bureau’s 2020–2024 estimates, about 44 percent of the homes and apartments in the city of Tomball were built before 1990. Across the 77375 and 77377 ZIP codes, which cover about five times the city’s land area, about seven in ten were built in 2000 or later.
The windows tend to differ with the age of the house. A house from the 1970s or 1980s may still have its original aluminum frames, which conduct heat and run hot in summer and cold in winter. A house from the 2000s is more likely on its first set of builder’s windows, and at that age a failed seal that fogs the glass is a common problem.
Tomball window replacement, plus doors, siding and gutters
Besides windows, we replace entry doors, patio doors and storm doors, and we install James Hardie siding and gutters and gutter guards. We leave window repair, glass cutting and commercial work to other companies.
Every window and door we put in gets our Leak Shield flashing system, and The Window Source of Houston backs each installation with a lifetime Leak Shield Guarantee. From here we also work south into Cypress, east toward Spring and northeast to The Woodlands, and anywhere else within about 100 miles of our office.
Work we take on in Tomball
- Replacement windows
- Energy-efficient windows
- Impact windows
- Entry and patio doors
- Storm doors
- James Hardie siding
- Gutters and gutter guards
How 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.
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.”
Have our Tomball office price your windows
Tell us which windows are giving you trouble, and The Window Source of Houston will send a consultant to measure and price the job. The visit costs nothing and comes with no obligation.







