5.0 from 426+ reviews

Window Replacement in Houston, TX

We offer professional window installation from the best craftsmen in Houston. Ready to have new windows installed in your home without breaking the bank? The Window Source of Houston is a family-owned, veteran-owned company in Tomball, and we replace windows in homes across the Greater Houston area.

We don’t have a ridiculous overhead, so we can keep our prices affordable. Every project starts with a free in-home estimate, and every installation we perform is backed by our lifetime Leak Shield Guarantee.

Leak Shield Guarantee badgeVeteran owned business sealGood Contractors List $25,000 guarantee per job sealHouston Chronicle Best of the Best 2026 winner

Call (281) 547-6900 for a free quote.

Large new picture windows and a French door in a remodeled living room

Replacing the windows in your Houston home

Whether you’re replacing one window that has fogged over or every window in the house, the job starts the same way. One of our consultants comes to your home, measures each opening, shows you samples and answers your questions. You get a price to think over on your own time.

“My team and I will never come to you with a high-pressure sales pitch or gimmicks. Instead, you can expect a friendly approach, maybe an ‘unnatural’ amount of window knowledge (we’re passionate about what we do!), all shared to help you confidently choose what’s truly right for your Houston home. No pressure, just helpful advice,” says owner David Mallette.

Types of replacement windows we install

The Window Source of Houston has the perfect window for your home’s style and needs. Choose classic double-hung windows for a traditional home, or casement windows for a more contemporary look and good ventilation.

Don’t know what kind of windows you want? That’s totally fine! We would love to help you find the windows that will make you proud of your home again.

For storm protection, we install impact windows built to stand up to hurricane-force wind and flying debris.

Back of a one-story house with new windows and a French door

Frames, glass and brands

We install vinyl, composite and aluminum replacement windows. Your consultant can show you how each frame holds up in Houston’s heat and humidity, and what each one costs.

The glass matters as much as the frame. Low-E coatings and insulated glass cut the heat that comes in through your windows, which is why energy-efficient windows can lower your cooling bills for as long as you own the house.

We carry windows from Pella, ProVia, MI Windows, NT Window and Alside.

Corner of a house with vinyl siding and two new replacement windows

How we install your new windows

Each old window comes out with its frame, and the new one is built to the measurements of your opening. Before it goes in, we seal the opening with our Leak Shield system. That means a flashing membrane over the rough opening, butyl tape at every seam and flange, low-expansion foam in the gap between frame and wall, and a final exterior seal.

Leak Shield comes with every installation at no extra cost, and we back every installation we perform with our lifetime Leak Shield Guarantee.

We will never leave the job without ensuring you have the highest quality windows installed properly and your home is left spotless. We take pride in our work and respect your space, aiming to leave behind one of the cleanest job sites you’ve ever seen.

What replacement windows cost in Houston

The price of a replacement window depends on its style, its size, the glass package and the frame color, plus any repairs the opening needs before the new window goes in. Our pricing page walks through each of those and has a calculator for a rough number.

Your free in-home estimate gives you the exact price for your home. If you’d rather spread out the cost, ask about our financing options.

What sets the price

  • Window style
  • Size and number of windows
  • Glass package
  • Frame color, woodgrain and grids
  • Repairs to the opening

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.

What Houston homeowners say

5.0
426+ 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

Get a price on new windows

Schedule your free in-home consultation. We’ll measure every window, show you your options and give you a price with no pressure to sign.

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