20 Best Window Companies in Sunnyvale, TX (2023 Reviews)

When you need to replace your windows, our reviews of the top window installation companies can help you find the provider for you.

We analyzed all the top-rated window companies in Sunnyvale and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated September 15, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

Although renewable energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your home's energy efficiency can also have a considerable impact on home energy conservation. Traditional, outdated windows could lead to spending more on electricity bills during the winter or summer months.

Installing efficient windows on your house can help you save money each month on your energy bills — and you can help the environment, too.

Unlike other sites, EcoWatch ranks window companies based on energy efficiency while also taking into consideration cost, customer satisfaction and service area.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Sunnyvale

The EcoWatch Reviews team examined many installers in Sunnyvale to find the best ones for our readers. The companies mentioned in this article scored best in our review categories, such as energy-efficient offerings, local expertise, customer service, price, availability and more.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World has windows expertise in Sunnyvale. Window World has been in the window installation business for around 27 years.

It is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Window World cost in Sunnyvale?

Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. For more accurate information on pricing, you can inquire about a quote from the company.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window installation business for around 27 years. Its reputation is backed by many positive reviews on customer review websites.

It uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019. Not all of Andersen’s offerings are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Sunnyvale?

Pricing details are not available on Andersen’s website since the cost of window replacement varies greatly based on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Getting a free quote on its website is the best way to know for sure.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This window installation company has been operating since 2002 and currently serves 27 states nationwide. Many positive reviews from customers online back the company's reputation.

Universal may be the company for you if you want one that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want high-quality Energy Star windows when inquiring. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.

How much does Universal Windows Direct cost in Sunnyvale?

Even though pricing is not available on Universal’s website, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. If you’d like more accurate information, you can receive a quote on the company’s website.

Texas Window Store logo
FAST QUOTE
as little as 30 seconds
Great Local Choice

Texas Window Store

★★★★★
BBB Rating: A+
Locations: Texas-Specific
Founded: 2018
Pros:
  • Pros icon Low prices relative to competitors
  • Pros icon Low number of customer complaints
  • Pros icon Wide variety of products and services
  • Pros icon Limited service area
Cons:
  • Pros icon Young company

Texas Window Store is not a physical store and does not manufacture its own products, but it does work with brand-name window and door suppliers. Texas Window Store has been in the window installation business for around 4 years. Its reputation is backed by many positive reviews on customer review websites.

It has dedicated customer service and can carry out an installation in a timely manner.

Energy Efficiency of Texas Window Store Windows

It carries a wide variety of name-brand windows, including Andersen and Pella, so the company has many energy-efficient options. Not all of Texas Window Store’s offerings are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Texas Window Store cost in Sunnyvale?

Pricing details are not available on Texas Window Store’s website since the cost of window replacement varies greatly based on how many and what type(s) of windows you need. However, it pitches your project to a group of window manufacturers, and says window costs are typically based on five factors: size, type, material, geographical region and dealer/reseller. Getting a free quote on its website is the best way to know for sure.

Window Nation logo
FAST QUOTE
as little as 30 seconds
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window installation business for around 16 years. Its reputation is backed by many positive reviews on customer review websites.

It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation. Not all of Window Nation’s offerings are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Window Nation cost in Sunnyvale?

Pricing details are not available on Window Nation’s website since the cost of window replacement varies greatly based on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. Getting a free quote on its website is the best way to know for sure.

We strive to be unbiased and transparent by listing pros and cons for each installer. Additionally, any partnerships do not affect our rankings.

More Window Companies in Sunnyvale

Renewal by Andersen Window Replacement

Carrollton, TX
4.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Aluminum Window Frames
  • Service icon Sliding Glass
  • Service icon Bay Windows
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Full-Service Installations

Website: https://dallaswindowsdoors.com/
Address: 1215 W Crosby Rd #180, Carrollton, TX 75006
Phone: (469) 217-9016

Window World of Dallas-Fort Worth

Richardson, TX
4.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Bay Windows
  • Service icon Glass Showers
  • Service icon Commercial Windows
  • Service icon Aluminum Window Frames
  • Service icon Window Replacement
  • Service icon Stained Glass
  • Service icon Energy-Efficient Options
  • Service icon Fast Delivery
  • Service icon Double-Hung
  • Service icon Window Repair
  • Service icon Custom Window Designs

Website: https://www.windowworlddfw.com/
Address: 600 N Coit Rd, Richardson, TX 75080
Phone: (972) 623-9998

Champion Replacement Windows of Ft. Worth

Fort Worth, TX
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Sliding Glass
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Custom Window Designs

Website: https://www.championwindow.com/Ft-Worth/
Address: 2951 Northern Cross Blvd #249, Fort Worth, TX 76137
Phone: (817) 349-7819

Window Nation

Grand Prairie, TX
4.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Window Replacement
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung

Website: https://www.windownation.com/window-replacement-dfw/
Address: 2940 N Hwy 360 Suite 300, Grand Prairie, TX 75050
Phone: (469) 251-7464

Foster Exteriors Window Company

Dallas, TX
4.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Sliding Glass
  • Service icon Energy-Efficient Options
  • Service icon Full-Service Installations
  • Service icon Residential Windows
  • Service icon Custom Window Designs

Website: https://www.fosterexteriors.com/
Address: 1350 N Buckner Blvd #216, Dallas, TX 75218
Phone: (214) 319-8400

RDS Door & Windows

Garland, TX
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Energy-Efficient Options
  • Service icon Commercial Windows
  • Service icon Custom Window Designs

Website: http://www.rdswindows.com/
Address: 230 Range Dr, Garland, TX 75040
Phone: (972) 272-7527

Galaxy Building Services, Inc.

Suite 103, TX
4.1
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement
  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: http://galaxy-build.com/
Address: 1331 US-80 East, Suite 103, Mesquite, TX 75150
Phone: (214) 693-3471

Andersen Windows

Garland, TX
4.1
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement
  • Service icon Aluminum Window Frames
  • Service icon Bay Windows
  • Service icon Commercial Windows
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Stained Glass
  • Service icon Full-Service Installations

Website: https://www.andersenwindows.com/
Address: 3801 Regency Crest Dr, Garland, TX 75041
Phone: (214) 221-9500

Acri Windows & Doors

Rowlett, TX
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Custom Window Designs

Website: http://www.acri.com/
Address: 4800 Edgewater Dr, Rowlett, TX 75088
Phone: (214) 550-0419

Southern Pride Openings LLC

Rowlett, TX
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Aluminum Window Frames
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Custom Window Designs

Website: http://www.southernprideopenings.com/
Address: 5101 Gordon Smith Dr, Rowlett, TX 75088
Phone: (972) 475-9500

JPON Glass Company

Garland, TX
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Glass Showers
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Window Repair
  • Service icon Custom Window Designs

Website: http://jponglass.com/
Address: 2025 Old Mill Run, Garland, TX 75044
Phone: (214) 349-1400

Home Services at The Home Depot

Dallas, TX
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Commercial Windows
  • Service icon Stained Glass
  • Service icon Fast Delivery

Website: https://www.homedepot.com/l/White-Rock/TX/Dallas/75218/550/services
Address: 11255 Garland Rd, Dallas, TX 75218
Phone: (214) 304-2667

Home Quality Solutions Roofing

Dallas, TX
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Repair
  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Residential Windows

Website: https://homequalitysolutions.com/
Address: 3839 McKinney Ave Suite 155-2417, Dallas, TX 75204
Phone: (214) 666-6150

Mister Glass

Dallas, TX
4.4
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Window Repair
  • Service icon Window Replacement
  • Service icon Glass Showers
  • Service icon Double-Hung

Website: https://www.misterglassinc.com/
Address: 13342 Floyd Cir, Dallas, TX 75243
Phone: (972) 838-1707

Factory To You Windows

Rockwall, TX
3.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs

Website: https://factorytoyouwindows.com/
Address: 4480 TX-276, Rockwall, TX 75032
Phone: (469) 698-9900

NewSouth Window Solutions

Richardson, TX
4.1
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung
  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Glass Showers
  • Service icon Sliding Glass

Website: https://newsouthwindow.com/location-dallas/
Address: 1002 N Central Expy STE 600, Richardson, TX 75080
Phone: (469) 699-8600

Mighty Dog Roofing

Dallas, TX
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Timely Service

Services Offered

  • Service icon Residential Windows
  • Service icon Window Repair
  • Service icon Commercial Windows
  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Aluminum Window Frames
  • Service icon Custom Window Designs

Website: https://www.mightydogroofing.com/dallas
Address: 5960 Berkshire Ln floor 6, Dallas, TX 75225
Phone: (214) 978-3837

The Glass Guru

Plano, TX
4.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Repair
  • Service icon Sliding Glass
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Residential Windows
  • Service icon Stained Glass
  • Service icon Window Replacement
  • Service icon Tempered Glass
  • Service icon Full-Service Installations
  • Service icon Glass Showers
  • Service icon Double-Hung

Website: https://www.theglassguru.com/plano-tx/
Address: 849 J Pl ste f, Plano, TX 75074
Phone: (469) 425-8825

Best Buy Windows and Siding

Richardson, TX
3.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Custom Window Designs

Website: https://www.bestbuywindowsandsiding.com/
Address: 1800 N Glenville Dr #102, Richardson, TX 75081
Phone: (972) 200-4485

Apple Roofing

Plano, TX
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Commercial Windows

Website: https://appleroof.com/dallas/
Address: 3001 E Plano Pkwy #100, Plano, TX 75074
Phone: (469) 908-4323
Sunnyvale Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Sunnyvale, TX using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Sunnyvale Saves You Money

There are several benefits of upgrading to energy-efficient windows. Some reasons you may want to consider making the switch are the following:

  • More efficient energy use in your household: Because the summers can get pretty hot in Sunnyvale, homeowners usually rely on their air conditioner a lot. Energy-efficient windows decrease the amount of cool air that is lost through your windows, which makes it easier to keep your home cool.
  • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
  • Save on energy bills: Switching to energy-efficient windows reduces your energy bills by about 12% because you use less energy.
  • Reduce your carbon footprint: By using less energy after upgrading to Energy Star certified windows, you'll also be reducing your carbon dioxide emissions by about 12%, according to Energy Star.

Estimated Cost of Window Replacement in Sunnyvale

Windows come in different styles, purposes and shapes, so costs and services will vary tremendously depending on several factors. Below, we go over the typical cost and services that you'll find from window installers.

How Much Do New Windows Cost?

On average, Sunnyvale homeowners can expect their window installations to range from $250 to $1,200. The most common installations sit at about $600. Costs will differ significantly depending on the current condition of your home, the quality of your products, your location and the number of windows you need. A lot of window companies also offer door installations and other add-ons like shutters, baths, coating and more. These extra services will increase your overall project costs.

Keep in mind that energy-efficient windows may cost more, but Energy Star estimates the upgrade will save you between $101 and $583 a year when you replace single-pane windows and between $27 and $197 a year when you replace double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

Costs will also vary depending on the material you want for your window frames. Aluminum frames cost the least. They're sturdy, light and maintenance-free, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They're also aesthetically pleasing and provide decent insulation for your home.

What Services do Window Installers Offer?

Generally, there are two types of window installation services companies offer: full-frame and pocket installations.

A full-frame installation is a total window replacement. This service involves removing the old window, the windowsill, and the exterior and interior trim. It can also involve additional materials, such as insulation and drip edges, which increase the overall cost of the project. It's also worth noting that it's not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations more simple and affordable. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.

Your window replacement company will be able to help you understand what's best for your needs. In Sunnyvale, the decision will mostly be based on how old your windows are and if there's any damage. Wood can decay if not properly maintained over the years, so it's a good idea to have a professional evaluate your frames and window sills.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Sunnyvale

EcoWatch differs from most reviewers since we're examining these companies through a sustainability lens. Along with energy efficiency, we assessed several window installers in Sunnyvale and assigned rankings based on the following methodology:

Service Area

This one is self-explanatory, but we've chosen to highlight window installers that serve Sunnyvale so you can find a quality window installation company near you.

Work Quality

When choosing new windows, the quality and range of services can often play just as important of a role in insulation and performance as the type of window you opt for. We do give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

Customer Reviews

We analyzed patterns in recent customer feedback to determine the companies with the highest rates of customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including professionalism, warranty, quality of installation, quality of parts, cost and more.

Cost

Cheaper windows don't necessarily mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing providers' prices, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

As discussed previously, windows are a substantial investment, so you'll want to make sure that investment is well protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Because of Sunnyvale's climate, homeowners need to be wary of water damage, rot and low efficiency. We factored in local experience to reflect the ability of Sunnyvale window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.

Sunnyvale, TX Window Replacement FAQs

How much does a window install cost?

The typical cost to replace a window can range between $450 and $650. There are a variety of factors that affect the cost, which include styles and sizes of windows, your property's location, how energy-efficient the windows are, the materials used in designing the windows, the number of windows and local labor costs.

What kind of window is the most energy-efficient?

Generally, double-pane windows are more efficient than single-pane windows and windows that don't open will be more efficient than windows that do. If you want to be sure you'll have the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — this means they're certified energy-efficient by the U.S. Department of Energy.

When should I use a window installation company?

You should hire a window installation professional whenever you want to replace your windows. Installing windows is a complex process that can be difficult to do on your own, so it's best handled by the professionals.

What time of year is a good time to replace my windows?

Replacement windows can be installed any time of the year, but autumn might be the best season. No matter when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into your house, so the temperature outside isn't necessarily a big factor. What's more important than the temperature is that the weather should be dry.

Follow us