“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.”
4.9 from 434+ reviews
Window Brands We Install in Houston, TX
The Window Source of Houston is a family-owned, veteran-owned window and door replacement company with an office in Tomball, and we replace windows in homes across Greater Houston. We’re a window supplier, and we install the windows we provide. We carry and install these window brands: Pella, ProVia, MI Windows, NT Window, and Alside, along with Window Source’s own TWS 3000, 6000, and 9000 series.
We install ProVia and Therma-Tru entry doors and Larson storm doors. Your new window is built to your opening’s measurements, and we use our Leak Shield system for every installation, backed by our lifetime Leak Shield Guarantee. We offer a free in-home consultation so you can compare the brands side by side and get a price.
Call (281) 547-6900 for a free quote.
Pella windows
Pete and Lucille Kuyper founded Pella in 1925, and the company has been based in Pella, Iowa since 1926. Pella calls itself a family-owned company and makes windows in wood, fiberglass, vinyl, and aluminum. We install Pella windows in double-hung, single-hung, casement, sliding, bay and bow, and custom styles.
ProVia windows
ProVia’s story began in 1977 in Sugarcreek, Ohio. The company makes windows and entry doors. We offer ProVia windows in the Endure, Aspect, Aeris, and ecoLite lines. We install single-hung, double-hung, sliding, casement, awning, bay and bow, and picture windows.
MI Windows
MI Windows and Doors began in 1947 as Metal Industries in a Florida airplane hangar, and it’s part of the MITER Brands family. We sell and install MI Windows in homes across the Houston area, and we offer the V3000 and V2000 vinyl series. You can choose single-hung, double-hung, sliding, casement, picture, and awning windows.
NT Window
NT Window is based in Fort Worth, Texas. The two-generation, family-owned company has been in business for more than 35 years and builds custom vinyl and aluminum windows. We offer its Energy Master, Executive, and Presidential vinyl series. You can choose single-hung, double-hung, sliding, casement, and picture window styles.
Alside windows
Alside was founded in 1947 and has its headquarters in Cuyahoga Falls, Ohio. It developed its first vinyl replacement window in 1980. We offer Alside windows in the Mezzo and Fusion vinyl lines, and we install them in single-hung, double-hung, sliding, casement, awning, bay and bow, and garden styles.
Our own TWS 3000, 6000, and 9000 series
We carry The Window Source’s own TWS 3000, 6000, and 9000 vinyl window lines, as do Window Source locations across the country. Each series adds options and performance over the one before it, so the price per window rises too. We list the price range for one installed single-hung window in each series on our pricing page.
The three series
- TWS 3000 Value Series: For a dependable replacement when budget comes first, you get standard styles and colors, plus a lifetime product and labor warranty.
- TWS 6000 Premiere Series: To match your house, you get more exterior colors and upgrades, with accidental glass breakage added to the lifetime product and labor warranty.
- TWS 9000 Signature Series: For homeowners putting comfort and energy savings first, this series has upgraded glass and frame features, plus accidental glass breakage coverage.
ProVia doors
We install ProVia doors, including entry doors, patio doors, and storm doors, from the same brand as the ProVia windows we carry. If you’re looking for an entry door, ProVia offers the Signet fiberglass and Legacy steel lines.
Therma-Tru doors
Therma-Tru’s roots go back to 1962 in Toledo, Ohio, and its headquarters are now in Maumee, Ohio. It introduced the Fiber-Classic fiberglass entry door in 1983. We offer the Fiber-Classic, Classic-Craft, and Smooth-Star collections, and we install Therma-Tru doors, including entry doors, patio doors, and French doors.
Larson storm doors
A storm door sits in front of your entry door, so it protects the door and keeps the weather out. It can also let fresh air into your house. We install full-view, mid-view, and security Larson storm doors, along with retractable screen doors.
Choosing between brands
The right brand depends on your house, the window styles you want, and your budget. We come to your house to measure each opening, show you samples, and answer your questions. We show you how each frame holds up in Houston heat and humidity and what each one costs, so you can weigh your options. We give you a price to think over on your own time and don’t pressure you to decide.
The same with every brand
- Free in-home consultation and estimate
- New window built to your opening’s measurements
- Our Leak Shield installation system at no extra cost
- Lifetime, transferable Leak Shield Guarantee
- A price to consider, no pressure to sign
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
4.9
434+ Google reviews
“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.”
Questions about the brands we install
Which window brand is best for a Houston home?
No single brand fits every house because your house, style, and budget shape the choice. In Houston, check the window’s energy-rating label first because it lists ratings you can use to compare windows. Harris County is in ENERGY STAR’s Southern climate zone, where the window solar heat gain coefficient (SHGC) limit is 0.23 or lower, and a lower SHGC means less of the sun’s heat passes through the glass. We compare brands and series side by side at your consultation, and you can learn more about glass in energy-efficient windows.
Do you sell and install MI Windows in the Houston area?
Yes, we sell and install MI windows in homes across the Houston area. We carry the MI V3000 and V2000 vinyl series in single-hung, double-hung, sliding, casement, picture, and awning styles. You can find more details on our MI Windows page.
Do you install NT Window windows?
Yes, we install NT Window windows. NT Window is based in Fort Worth, Texas, and builds custom vinyl and aluminum windows. We offer its Energy Master, Executive, and Presidential vinyl series. You can find more details on our NT Window page.
Is the warranty the same for every brand?
We back every installation we perform, whatever the brand, with our lifetime, transferable Leak Shield Guarantee. The TWS 3000, 6000, and 9000 series each come with a lifetime product and labor warranty, and the 6000 and 9000 series also cover accidental glass breakage. Your consultant will go over product warranty details for the other brands with you.
Other windows and doors we install
Compare window brands at home
We’ll visit you for a free in-home consultation, bring samples, measure every window, and give you a price. We won’t pressure you to sign.