27 Best Window Replacement Companies in Sunnyvale, CA (Jan 2023)
Window Companies Near Me

When it's time to replace your windows, our reviews of the best window installation companies can help you find the right provider for you.

We analyzed all the top window installers in Sunnyvale and selected the top 27 based on:

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

By EcoWatch Local Advisors

Updated January 12, 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.

A review of the top window installation companies in Sunnyvale may not seem like the most compelling article on the EcoWatch site, but trust us, windows have more of an impact on your life than you might think. Traditional, outdated windows could lead to spending more on energy bills during the winter or summer months.

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

So if you're building a new home, renovating or updating your windows in Sunnyvale, you've found the best place to get started.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Great industry reputation
  • Manufactures products in-house
  • More expensive than competition

Excellent Reputation

Milgard Windows & Doors

★★★★★
4.5

  • EnergyStar Partner
  • Wide network of installers
  • Lifetime warranty available
  • Limited additional services

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • EnergyStar Partner
  • Great industry reputation
  • Quality of service will depend on your area

Best Window Replacement Companies in Sunnyvale

The EcoWatch team examined dozens of providers that service the Sunnyvale area to find the top window installation companies by our standards. The installers mentioned in this article scored the best in our review categories, such as energy-efficient offerings, price, availability, customer service, local expertise and more.

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 Member of US Green Building Council
  • Pros icon Great industry reputation
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen provides the best availability in Sunnyvale. Andersen has about 27 years of experience in the window replacement industry.

It has established itself as a company that 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

Renewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for Energy Star windows when inquiring. 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.

How much does Renewal by Andersen cost in Sunnyvale?

While prices are not available on Andersen's website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to know for sure is to ask for a free quote from the company.

Milgard Windows & Doors logo
FAST QUOTE
as little as 30 seconds
Excellent Reputation

Milgard Windows & Doors

★★★★★
BBB Rating: A
Locations: West Coast
Founded: 1962
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Wide network of installers
  • Pros icon Lifetime warranty available
Cons:
  • Pros icon Limited additional services

Milgard Windows & Doors is a family-owned and -operated window replacement company, which primarily serves the West Coast. This window installation company has been in business since 1962 and currently provides services to Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. The company has hundreds of positive reviews from customers on online review websites.

It has established itself as a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.

Energy Efficiency of Milgard Windows & Doors Windows

The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised. Not all of Milgard's offerings are Energy Star certified, so make sure you mention that you'd like Energy Star windows when inquiring.

How much does Milgard Windows & Doors cost in Sunnyvale?

Prices aren't available on Milgard's website, but it offers different kinds of windows at varying price points. The best way to get more accurate information is to request a free quote from the company.

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

Window World

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

Window World provides windows expertise in Sunnyvale. Window World has been in the window industry for about 27 years. The provider has plenty of positive reviews from customers on online review websites.

If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the provider for you.

Energy Efficiency of Window World Windows

Window World is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.

How much does Window World cost in Sunnyvale?

Though pricing information is not readily available on Window World's website, it's known for offering some of the most affordable window installations around. The best way to get more accurate information is to get a free quote from the company.

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. Universal has about 20 years of industry experience, and it currently provides services to 27 states nationwide. Many positive reviews on customer review websites back the company's reputation.

It has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

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. Not all of Universal's offerings are Energy Star certified, so make sure you mention that you'd like Energy Star windows when inquiring.

How much does Universal Windows Direct cost in Sunnyvale?

Pricing information is not available on Universal's website because the cost of window installment differs based on how many and what type(s) of windows you need. However, 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. For more detailed information on pricing, you can receive a quote from the company.

We try to remain unbiased and transparent by listing pros and cons for every company we review. Additionally, our rankings are not influenced by any partnerships.

More Window Replacement Companies in Sunnyvale

Renewal by Andersen of San Francisco

Hayward, CA
4.3
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Appointment Windows
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://www.renewalbyandersen.com/window-company/890-san-francisco-ca/retailer
Address: 30806 Santana St, Hayward, CA 94544
Phone: (510) 803-3110

Quality First Home Improvement, Inc.

Campbell, CA
4.3
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Good Customer Service
  • Pros icon Consistent Workmanship
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.qualityfirsthome.com/locations/california/san-jose-ca/
Address: 485 Salmar Ave, Campbell, CA 95008
Phone: (800) 859-7494

Global Glass Enterprise Inc.

San Jose, CA
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Educational Website
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Energy-Efficient Options
  • Service icon Tempered Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.goglobalglass.com/
Address: 14768 Ronda Dr, San Jose, CA 95124
Phone: (408) 799-3715

Window Replacement San Leandro

San Leandro, CA
4.0
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1300 Fairmont Dr, San Leandro, CA 94578
Phone: (510) 722-0016

Best Exteriors

San Leandro, CA
4.0
★★★★★
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 689 E 14th St, San Leandro, CA 94577
Phone: (510) 961-3697

Best Exteriors

Oakland, CA
4.0
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Good Customer Service
  • Pros icon No-fee Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1999 Harrison St #10219, Oakland, CA 94612
Phone: (877) 792-6065

Window Replacement Dublin

Dublin, CA
4.0
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: 4530 Dublin Blvd, Dublin, CA 94568
Phone: (925) 587-4767

Window Replacement Livermore

Livermore, CA
4.0
★★★★★
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1374 Railroad Ave, Livermore, CA 94550
Phone: (925) 495-1522

Window Replacement Pleasanton

Pleasanton, CA
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Reliable Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: Pleasanton Ave, Pleasanton, CA 94566
Phone: (925) 400-8953

Window Replacement San Francisco

San Francisco, CA
4.0
★★★★★
  • Pros icon Free Quotes
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1597 Sanchez St, San Francisco, CA 94131
Phone: (650) 402-1162

Window Replacement Oakland

Oakland, CA
4.0
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Arrives on Time
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 1722 Broadway, Oakland, CA 94612
Phone: (510) 722-0008

Window Replacement Alameda

Alameda, CA
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: 555 Ralph A Memorial Pkwy, Alameda, CA 94501
Phone: (510) 722-0010

Window Replacement Redwood City

Pleasanton, CA
4.0
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Timely Service
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 649 Main St, Pleasanton, CA 94566
Phone: (650) 569-1968

Roxy Glass

Morton Ave, CA
4.0
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Tempered Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://bayareawindowglass.com/
Address: 7401-A, Morton Ave, Newark, CA 94560
Phone: (510) 400-7788

Window Replacement Fremont

Fremont, CA
4.0
★★★★★
  • Pros icon Free Quotes
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 43713 Boscell Rd, Fremont, CA 94538
Phone: (510) 722-0717

Window Replacement Union City

Union City, CA
4.0
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Good Customer Service
  • Pros icon Arrives on Time
  • Pros icon Free Quotes

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 4126 Dyer St, Union City, CA 94587
Phone: (510) 722-0020

Window Replacement San Mateo

San Mateo, CA
4.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Arrives on Time
  • Pros icon Price Transparency

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 514 S Norfolk St, San Mateo, CA 94401
Phone: (650) 356-8663

Best Exteriors

Oakland, CA
4.0
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: 1301 E 31st St, Oakland, CA 94602
Phone: (510) 961-3175

Window Replacement Hayward

Hayward, CA
4.0
★★★★★
  • Pros icon Reliable Service
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 27531 Tampa Ave, Hayward, CA 94544
Phone: (510) 606-4707

Heritage Home Solution

San Jose, CA
4.0
★★★★★
  • Pros icon Reliable Service
  • Pros icon Good Customer Service
  • Pros icon Award-Winning
  • Pros icon Helps Educate Customers

Services Offered

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

Website: https://heritagedoorsandwindows.com/
Address: 3801 Charter Park Ct ste b, San Jose, CA 95136
Phone: (408) 266-8303

A1 Bay Area Glass

San Jose, CA
3.9
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Consistent Workmanship

Services Offered

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

Website: http://a1bayareaglass.net/
Address: 1561 Virginia Pl, San Jose, CA 95116
Phone: (408) 910-9878

Epic Home Upgrades and Construction

San Leandro, CA
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Award-Winning
  • Pros icon Free Quotes

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Windows
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: http://epichomeupgrades.com/
Address: 303 W Joaquin Ave #103, San Leandro, CA 94577
Phone: (888) 714-3742

The Window Specialists, Inc.

Oakland, CA
3.9
★★★★★
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes

Services Offered

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

Website: http://www.windowspecialist.com/
Address: 3250 Hollis St, Oakland, CA 94608
Phone: (510) 923-1000

Integrity Windows & Doors

San Jose, CA
3.8
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Architectural Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: http://www.408windows.com/
Address: 4238 Monterey Rd Unit B, San Jose, CA 95111
Phone: (408) 225-2600

R & M Quality Windows & Doors

Newark, CA
3.8
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Arrives on Time
  • Pros icon No-Hassle Pricing
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.randmqualitywindowsanddoors.com/
Address: 5588 Central Ave #A, Newark, CA 94560
Phone: (510) 796-0100

Danville Glass Company

Danville, CA
3.8
★★★★★
  • Pros icon Arrives on Time
  • Pros icon No-fee Quotes
  • Pros icon Educational Website
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Sliding Glass

Website: http://www.danvilleglasscompany.com/
Address: 4115 Blackhawk Plaza Cir #100, Danville, CA 94506
Phone: (925) 277-0555

Landmark Exteriors

Livermore, CA
3.8
★★★★★
  • Pros icon Dependable Service
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://landmark-exteriors.com/
Address: 147 A N Livermore Ave, Livermore, CA 94550
Phone: (925) 551-8070

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 change include the following:

  • Save money on electricity bills: Upgrading to energy-efficient windows reduces your energy bills by about 12% since you use less energy.
  • Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, particularly if your home is on the older side.
  • Decrease your carbon footprint: By using less energy after upgrading to Energy Star certified windows, you'll also be cutting your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will fade less because of their ability to filter out damaging UV rays.

Estimated Cost of Window Replacement in Sunnyvale

Windows come in different styles, shapes and purposes, so costs and services will vary considerably depending on several factors. Below, we detail the average cost and services that you'll find from window replacement companies.

How Much Do New Windows Cost?

Typically, homeowners in Sunnyvale can expect that most replacement window installations will range from $250 to $1,200, with the most common installations sitting at about $600. This is because window installations are based on several factors specific to your home, like the size, material and number of windows you need to install, as well as the location of your property.

It's also worth bearing in mind that energy-efficient windows will usually cost more upfront, but Energy Star estimates that switching out the windows on your Sunnyvale home can mean an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you'll save by switching to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.

Costs will also vary depending on the material of your frame. Aluminum frames are the least expensive. They're sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made from wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and provide decent insulation for your home.

What Services do Window Installers Offer?

The first thing to ask yourself when planning on installing new windows is: Should you get a full-frame installation or a pocket installation?

A full-frame installation is a replacement of the total window. This service involves taking out the old window, the sill, and the exterior and interior trim. It can also involve other materials, including insulation and drip edges, which raise the overall cost of the project. Also worth noting: you may have to touch up the paint around the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are simpler and won't carry as large a bill, but you can't do this kind of installment if you have any pre-existing rot or water damage.

If you're still debating which kind of installation you should get, you can talk to your installer and get their recommendation. The choice mostly depends on the age of your window frames and if there's any damage.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Great industry reputation
  • Manufactures products in-house
  • More expensive than competition

Excellent Reputation

Milgard Windows & Doors

★★★★★
4.5

  • EnergyStar Partner
  • Wide network of installers
  • Lifetime warranty available
  • Limited additional services

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • EnergyStar Partner
  • Great industry reputation
  • Quality of service will depend on your area

How We Choose the Best Window Installers in Sunnyvale

In our search to find the most reliable, eco-friendly window installers in Sunnyvale, EcoWatch landed on the above companies as the top window installation companies in the city. We have decided to assess the top window replacement companies in Sunnyvale mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows can reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:

Service Area

Because this is a guide for Sunnyvale, we paid more attention to companies that provide services to the city. There are other reputable providers that didn't make the list because of the low odds that they would serve the average homeowner in Sunnyvale.

Work Quality

When picking new windows, the quality and variety of services can often play just as important of a role in insulation and performance as the brand you get. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have good things to say about their service from a certain installer, you won't see it featured on EcoWatch.

Cost

This one is a give-and-take: similar to other services, cheap window installation companies won't always provide the most quality service. On the other hand, we want to make sure we're highlighting companies that offer a range of price and financing options so they're accessible to most homeowners.

Warranty

As discussed, windows are a hefty investment, so you'll want to be certain that investment is well protected. Window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Because of Sunnyvale's climate, homeowners will want to mitigate rot, low efficiency and water damage. 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, CA Window Replacement FAQs

What is the typical cost to install new windows in a home?

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

Which type of window is the best?

Generally, double-pane windows are more efficient than single-pane windows and windows that do not open will be more efficient than windows that do. To be sure you're getting the most energy-efficient windows, look for models that have the blue Energy Star certification — that means they're certified energy-efficient by the U.S. Department of Energy.

What do window installation companies do?

Window installation companies will do the entire process — from replacing old windows with brand new ones to cleaning up after the installation. Additionally, many companies offer window manufacturing, customization and repairs.

Should I replace my windows all at once?

If you want to get more efficient windows and save money on your energy bills, replacing all of the windows together is the only way to see a noticeable difference. On the other hand, if you have only a few windows that are damaged or drafty, you can replace just those.

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