30 Best Window Replacement Companies in Los Altos Hills, CA (Feb 2023)
Window Companies Near Me
If you're thinking about getting new windows, our list of the best window installation companies can help.
We analyzed all the top window installers in Los Altos Hills and selected the top 30 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 guide on the best window installation companies in Los Altos Hills may not seem like the most captivating article on the EcoWatch site, but trust us, windows have a more direct impact on your life than you might realize. Poor windows can make your home uncomfortable in the summer or winter.
That's also bad for the environment because the extra energy used by drafty windows increases your carbon footprint.
We've made this guide on the top installation companies to help you in your search, so you can not only benefit from brand new windows, but also save money on your electricity bills.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Affordability
Window World
- Lifetime warranty
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Award-winning company
- Manufactures products in-house
- More expensive than competition
Best Window Replacement Companies in Los Altos Hills
The EcoWatch Reviews team researched many window installation companies in Los Altos Hills to find the top ones for our readers. We assessed the companies on their energy-efficient offerings, local experience, coverage area, customer service, price and more.

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 has the best local installation in Los Altos Hills. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. This company has 60 years of experience in the windows business, and it has proved to be one of the best companies in Los Altos Hills. Hundreds of positive reviews on customer review websites back the provider's reputation.
You may want to consider choosing Milgard if you're looking for 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 WindowsMilgard Windows & Doors caters to eco-conscious consumers by providing energy-efficient window offerings. 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.
How much does Milgard Windows & Doors cost in Los Altos Hills?Milgard doesn't have any cost information listed on its website, but it offers different kinds of windows at varying price points. Getting a free quote on its website is the best way to know for sure.

Window World
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Lifetime warranty
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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 is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window installation industry. Hundreds of positive reviews on customer review websites back the company's reputation.
It has established itself as a company that 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 WindowsWindow World appeals to eco-conscious consumers by providing energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Los Altos Hills?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. You can ask for a free quote on its website for more information about the cost.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Manufactures products in-house
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More expensive than competition
Renewal by Andersen provides the best availability in Los Altos Hills. This company has 27 years of experience in the windows business, and it has established itself as one of the most respected companies in Los Altos Hills. Its reputation is backed by several positive reviews from customers online.
If you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the perfect provider for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality 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 Los Altos Hills?Prices aren't available on Andersen's website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Requesting a free quote on its website is the best way to know for sure.

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 provides the best warranty in Los Altos Hills. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has about 20 years of experience in the window installation business.
It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct's commitment to sustainability can be seen in its energy-efficient window offerings. 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 Los Altos Hills?Universal doesn't have any cost information listed on its website, but 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. You can inquire about a free quote on its website for more information about the cost.
We've recommended providers with shining reputations, but note that some national companies have independently owned locations in Los Altos Hills, so your service may vary depending on your local crew. We have tried to stay unbiased and transparent by including pros and cons for each company we reviewed.
More Window Replacement Companies in Los Altos Hills
Renewal by Andersen of San Francisco
Hayward, CA-
Reliable Service
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No-fee Quotes
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Reliable Appointment Windows
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Price Transparency
Services Offered
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Custom Windows
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Business 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-
Good Customer Service
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No-fee Quotes
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Award-Winning
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Reliable Service
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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Double-Hung
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Sliding Glass
Global Glass Enterprise Inc.
San Jose, CA-
Price Transparency
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Helps Educate Customers
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Reliable Service
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Excellent Customer Service
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-
Free Quotes
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Reliable Appointment Windows
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Price Transparency
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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 Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Best Exteriors
San Leandro, CA-
Arrives on Time
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Educational Website
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Price Transparency
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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
Window Replacement Berkeley
Berkeley, CA-
Helps Educate Customers
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Timely Service
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Excellent Customer Service
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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-
Arrives on Time
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Consistent Workmanship
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Educational Website
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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 Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Window Replacement Dublin
Dublin, CA-
Good Customer Service
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Timely Service
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Free Quotes
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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 & Bow Windows
Window Replacement Livermore
Livermore, CA-
Good Customer Service
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Price Transparency
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Reliable Appointment Windows
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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 & Bow Windows
Window Replacement Pleasanton
Pleasanton, CA-
Reliable Service
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Arrives on Time
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Educational Website
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Good 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 & Bow Windows
Window Replacement San Francisco
San Francisco, CA-
Free Quotes
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Excellent Customer Service
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Reliable Service
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Timely Service
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-
Educational Website
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Dependable Service
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No-fee Quotes
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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 Alameda
Alameda, CA-
No-Hassle Pricing
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Good Customer Service
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Dependable Service
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Timely Service
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 Redwood City
Pleasanton, CA-
No-Hassle Pricing
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Educational Website
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Reliable Service
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Arrives on Time
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
Roxy Glass
Morton Ave, CA-
Free Quotes
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Educational Website
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Excellent Customer Service
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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 Window Designs
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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 Fremont
Fremont, CA-
Reliable Appointment Windows
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Consistent Workmanship
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Free Quotes
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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 Windows
Window Replacement Union City
Union City, CA-
Excellent Customer Service
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Dependable Service
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Price Transparency
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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 & Bow Windows
Window Replacement San Mateo
San Mateo, CA-
No-Hassle Pricing
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Excellent Customer Service
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No-fee Quotes
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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 Window Designs
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Double-Hung
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Sliding Glass
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Bay Windows
Best Exteriors
Oakland, CA-
Helps Educate Customers
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Dependable Service
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No-fee Quotes
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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 Hayward
Hayward, CA-
Consistent Workmanship
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No-fee Quotes
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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 & Bow Windows
Heritage Home Solution
San Jose, CA-
Educational Website
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No-Hassle Pricing
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Good Customer Service
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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
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Aluminum Window Frames
A1 Bay Area Glass
San Jose, CA-
No-Hassle Pricing
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Consistent Workmanship
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Good Customer Service
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Helps Educate Customers
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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Business Windows
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Double-Hung
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Sliding Glass
Epic Home Upgrades and Construction
San Leandro, CA-
Locally Recognized for Quality
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Good Customer Service
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Consistent Workmanship
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Free Quotes
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
The Window Specialists, Inc.
Oakland, CA-
No-Hassle Pricing
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Helps Educate Customers
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No-fee Quotes
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Supports Charities
Services Offered
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Custom Windows
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Residential Windows
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Energy-Efficient Options
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Commercial Windows
Integrity Windows & Doors
San Jose, CA-
Educational Website
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Arrives on Time
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Dependable Service
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Excellent Customer Service
Services Offered
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Architectural Glass
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Custom Window Designs
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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-
No-Hassle Pricing
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Educational Website
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Excellent Customer Service
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Reliable Service
Services Offered
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Residential Windows
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Custom Window Designs
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Full-Service Installations
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Double-Hung
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Sliding Glass
Danville Glass Company
Danville, CA-
Locally Recognized for Quality
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Educational Website
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Dependable Service
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Reliable Appointment Windows
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
Landmark Exteriors
Livermore, CA-
Dependable Service
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Price Transparency
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Timely Service
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Aames Windows & Doors Inc
Alamo, CA-
Price Transparency
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Excellent Customer Service
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Locally Recognized for Quality
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Arrives on Time
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
American Vision Windows
Santa Clara, CA-
Consistent Workmanship
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Stained Glass
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Sliding Glass
How Installing Energy-Efficient Windows in Los Altos Hills Saves You Money
Upgrading to energy-efficient windows can improve the comfort of your home and help you save on electricity bills. Here's more information on how upgrading your windows could benefit you:
- Save money on power bills: After you install energy-efficient windows, you can see a reduction in your bills by about 12% since you'll use less energy to heat or cool your home.
- Decrease your carbon footprint: You can reduce your carbon footprint by about 12% once you install Energy Star certified windows. In Los Altos Hills, that's about 117 pounds per year on average.
- Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, particularly if you have an older home.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
Estimated Cost of Window Replacement in Los Altos Hills
Windows come in various shapes and sizes, so costs and services will vary greatly. Here are the typical costs and services that you can find from window installers.
How Much Do New Windows Cost?
Generally, Los Altos Hills homeowners can expect their replacement window installations to range from $250 to $1,200. The average cost is at about $600. This is because window installations depend on several factors specific to your home, including the size, material and number of windows you need to install, as well as where your property is located.
With windows, efficiency is one of the most important factors for many homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — particularly if you live in a hot climate — they can give you decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Los Altos Hills homeowners $636+ per year after replacing single-pane windows.
Another factor that affects the total cost is the material of the frame you select. Aluminum frames are generally the least expensive and are sturdy and relatively maintenance-free, but they offer poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and offer decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
The first question to ask yourself when planning to replace your windows is: Do you want a full-frame installation or a pocket installation?
Full-frame installations involve replacing the full window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has a great amount of damage. Full-frame installations are more comprehensive and will increase overall costs. A pocket installation entails replacing a window within the existing frame, which is generally cheaper than a full-frame installation.
Your window installation company will be able to recommend the best type for your project. In Los Altos Hills, the decision will mostly be influenced by how much damage there is currently and how old your existing frames are.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Affordability
Window World
- Lifetime warranty
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Award-winning company
- Manufactures products in-house
- More expensive than competition
How We Choose the Best Window Installers in Los Altos Hills
EcoWatch reviews differ from other reviews, as we assess these companies through a sustainability lens. We have assessed the top window replacement companies in Los Altos Hills primarily based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Los Altos Hills so you can find a quality window installation company near you.
Work Quality
We're willing to bet that you're not looking for a company to do a shoddy job installing windows. We've vetted each installer in our guide to ensure its technicians are well-qualified and that the company has received tons of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent online reviews to determine the companies with the most 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 parts, quality of installation, cost and more.
Cost
This one is a give-and-take: similar to other services, cheap window installers are not going to provide the highest quality service. On the other hand, we want to ensure we're highlighting companies that provide a spectrum of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a substantial investment, so you'll want to be certain that investment is well protected. Window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installation companies that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Los Altos Hills, CA Window Replacement FAQs
How much should window installation cost?
The national average cost to replace a single window is around $600 but can range from $200 to $1,200, based on several factors. The price is usually influenced by the location of your property, the type and material of the window and the size of the window. Also, remember that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
What are the different kinds of windows?
There are several different kinds of windows you can get for your home, including double-hung and single-hung windows, transom windows, awning windows, bay windows, casement windows, slider windows and picture windows.
When do I need to use a window installation company?
Unless you're handy and have all the tools you need to replace your own windows, we recommend hiring a professional installer. The window installation process is complicated and can take anywhere from four to six hours for a single window. Although it's tempting to try to save money by doing it yourself, hiring a company is a faster, more efficient and safer option.
How long does window installation generally take?
Because a window takes about 30 minutes to install, about 16 windows can be installed during a typical 8-hour work day.
Should I replace all my windows at the same time?
If you're upgrading your windows to get more efficient windows, replacing all of your windows at once is the only way to see a noticeable difference. On the other hand, if you have just a few windows that are broken or drafty, you can replace just those.