5.0 from 425+ reviews

Window and Door Replacement in Houston, TX

Custom-built windows and doors, a free in-home consultation, and a lifetime limited warranty.

David and Margie Mallette, owners of The Window Source of Houston
David & Margie MalletteOwners, The Window Source of Houston

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What Houston homeowners say

5.0
425+ Google reviews
“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.”
KL
Kennedy LovelaceSeptember 2026
“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.”
LN
Lesley NobleAugust 2026
“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.”
MR
Megan RosenquistAugust 2026
A Window Source of Houston van and pickup truck, both in company wrapDavid Mallette

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 company

How your project works

We do not consider the job finished until every window and door is installed properly in your home.

  1. 01

    Free consultation

    A window and door expert visits your home, measures, and walks you through styles, glass options and pricing.

  2. 02

    We place your order

    Once you choose your products, we order them custom built to the measurements of your openings.

  3. 03

    Installation day

    We schedule a date that works for you. The crew protects your floors and furniture and cleans up before leaving.

  4. 04

    Lifetime 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.

Awards and Accreditation

  • BBB Accredited Business, A+ rating
  • BBB Awards for Excellence 2026 Pinnacle Winner
  • Guide to Texas Best of Texas 2026
  • Expertise.com Best Window Contractors in League City 2026
  • Qualified Remodeler Top 500 2026, No. 429
  • Qualified Remodeler Top 500 2024, No. 378
  • Qualified Remodeler Top 500 2023, No. 457

Get a price on new windows and doors

Free in-home consultation. Financing available for qualified homeowners.

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