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:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated January 12, 2023
Why you can trust EcoWatch
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 Traditional, outdated windows could lead to spending more on energy bills during the winter or summer months.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
- Member of US Green Building Council
- Great industry reputation
- Manufactures products in-house
- More expensive than competition
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Affordability
Window World
- 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
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Member of US Green Building Council
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Great industry reputation
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Manufactures products in-house
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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 WindowsRenewal 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
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EnergyStar Partner
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Wide network of installers
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Lifetime warranty available
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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 WindowsThe 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
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Low prices relative to competitors
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EnergyStar Partner
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Great industry reputation
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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 WindowsWindow 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
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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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 WindowsThe 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-
Excellent Customer Service
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Reliable Appointment Windows
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No-Hassle Pricing
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Helps Educate Customers
Services Offered
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Quality First Home Improvement, Inc.
Campbell, CA-
Reliable Appointment Windows
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Good Customer Service
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Consistent Workmanship
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Price Transparency
Services Offered
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Residential Windows
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Glass Showers
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Energy-Efficient Options
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Custom Windows
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Double-Hung
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Sliding Glass
Global Glass Enterprise Inc.
San Jose, CA-
Price Transparency
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Excellent Customer Service
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Educational Website
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Consistent Workmanship
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Tempered Glass
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
Window Replacement San Leandro
San Leandro, CA-
Helps Educate Customers
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No-fee Quotes
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Price Transparency
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Reliable Appointment Windows
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Best Exteriors
San Leandro, CA-
Timely Service
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Good Customer Service
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No-Hassle Pricing
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Consistent Workmanship
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Best Exteriors
Oakland, CA-
Reliable Appointment Windows
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Good Customer Service
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No-fee Quotes
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Educational Website
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Dublin
Dublin, CA-
No-fee Quotes
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Excellent Customer Service
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Reliable Service
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Helps Educate Customers
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Livermore
Livermore, CA-
Reliable Service
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No-fee Quotes
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Excellent Customer Service
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Pleasanton
Pleasanton, CA-
Good Customer Service
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Price Transparency
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Educational Website
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Reliable Service
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement San Francisco
San Francisco, CA-
Free Quotes
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Good Customer Service
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No-Hassle Pricing
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Consistent Workmanship
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Oakland
Oakland, CA-
No-Hassle Pricing
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Arrives on Time
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Educational Website
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Excellent Customer Service
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Alameda
Alameda, CA-
Price Transparency
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Helps Educate Customers
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Good Customer Service
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No-fee Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Redwood City
Pleasanton, CA-
Excellent Customer Service
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Timely Service
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No-fee Quotes
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Price Transparency
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Roxy Glass
Morton Ave, CA-
No-fee Quotes
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Good Customer Service
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Helps Educate Customers
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No-Hassle Pricing
Services Offered
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Residential Windows
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Glass Showers
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Energy-Efficient Options
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Tempered Glass
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Window Replacement Fremont
Fremont, CA-
Free Quotes
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Educational Website
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No-Hassle Pricing
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Reliable Appointment Windows
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Union City
Union City, CA-
Consistent Workmanship
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Good Customer Service
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Arrives on Time
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Free Quotes
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement San Mateo
San Mateo, CA-
Educational Website
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Good Customer Service
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Arrives on Time
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Price Transparency
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Best Exteriors
Oakland, CA-
Consistent Workmanship
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No-fee Quotes
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Helps Educate Customers
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Window Replacement Hayward
Hayward, CA-
Reliable Service
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Free Quotes
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Helps Educate Customers
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Heritage Home Solution
San Jose, CA-
Reliable Service
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Good Customer Service
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Award-Winning
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Helps Educate Customers
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Sliding Glass
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Aluminum Window Frames
A1 Bay Area Glass
San Jose, CA-
Excellent Customer Service
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Price Transparency
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No-fee Quotes
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Consistent Workmanship
Services Offered
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Residential Windows
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Sliding Glass
Epic Home Upgrades and Construction
San Leandro, CA-
Good Customer Service
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No-Hassle Pricing
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Award-Winning
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Free Quotes
Services Offered
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Sliding Glass
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Custom Windows
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Energy-Efficient Options
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Double-Hung
The Window Specialists, Inc.
Oakland, CA-
Timely Service
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Good Customer Service
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No-Hassle Pricing
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Free Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Energy-Efficient Options
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Business Windows
Integrity Windows & Doors
San Jose, CA-
No-Hassle Pricing
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Excellent Customer Service
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Helps Educate Customers
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Reliable Appointment Windows
Services Offered
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Architectural Glass
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Custom Windows
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Aluminum Window Frames
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Sliding Glass
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Bay & Bow Windows
R & M Quality Windows & Doors
Newark, CA-
Excellent Customer Service
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Arrives on Time
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No-Hassle Pricing
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Educational Website
Services Offered
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Residential Windows
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Custom Windows
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Full-Service Installations
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Double-Hung
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Sliding Glass
Danville Glass Company
Danville, CA-
Arrives on Time
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No-fee Quotes
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Educational Website
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Locally Recognized for Quality
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Residential Windows
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Sliding Glass
Landmark Exteriors
Livermore, CA-
Dependable Service
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Good Customer Service
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Helps Educate Customers
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No-Hassle Pricing
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
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
- Member of US Green Building Council
- Great industry reputation
- Manufactures products in-house
- More expensive than competition
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Affordability
Window World
- 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.