20 Best Window Companies in Cotati, CA (2023 Reviews)
Looking to replace your home's windows? We've got you covered in this list of the top window installation companies.
We analyzed all the top-rated window companies in Cotati and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
A guide on the best window installation companies in Cotati may not seem like the most compelling article on the EcoWatch site, but trust us, windows impact your life more than you might realize. During the summer months, the last thing you want is your cool air to leak out of your drafty windows.
That's also bad for the environment because the additional energy required by outdated windows increases your carbon footprint.
Unlike other sites, EcoWatch ranks window installation companies on energy efficiency while also balancing cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Cotati
The EcoWatch Reviews team assessed dozens of window providers in Cotati to find the best ones for our readers. We assessed the companies based on their energy-efficient offerings, price, local experience, coverage area, customer service and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World provides windows expertise in Cotati. This window installation company has been operating since 1995 and currently serves 200 locations nationwide. Hundreds of positive reviews from customers online 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’s commitment to sustainability can be seen in its 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 Cotati?While prices are not available on Window World’s website, it's known for offering some of the most affordable window installations around. Receiving a free quote on its website is the best way to get more accurate pricing information.

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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Entails hiring third-party contractors
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Limited additional services
Milgard Windows & Doors provides the best local installation in Cotati. This window installation company has been operating since 1962 and currently serves Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. Hundreds of positive reviews from customers online back the company's reputation.
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 WindowsMilgard Windows & Doors’s commitment to sustainability can be seen in its 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 Cotati?While prices are not available on Milgard’s website, it offers different kinds of windows at varying price points. Receiving a free quote on its website is the best way to get more accurate pricing information.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen provides the best availability in Cotati. This window installation company has been operating since 1995 and currently serves nearly every state except Mississippi and West Virginia. Hundreds of positive reviews from customers online back the company's reputation.
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’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 Cotati?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. Receiving a free quote on its website is the best way to get more accurate pricing information.

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. This provider has 20 years of experience in the window installation industry, and it has become one of the best companies in the business. Hundreds of positive reviews from customers online back the company's reputation.
It 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 shows 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 Cotati?While prices are not readily available on Universal’s website, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. If you’d like more accurate pricing information, you can ask for a quote on the company’s website.
We strive to remain unbiased and transparent by including pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Cotati
Renewal by Andersen of San Francisco
Hayward, CA-
Educational Website
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Double-Hung
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Bay Windows
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Window Replacement
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Sliding Glass
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Glass Showers
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Stained Glass
Save Energy Windows and Doors
Petaluma, CA-
Free assessment
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Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Custom Window Designs
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Energy-Efficient Options
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Residential Windows
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Bay Windows
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Sliding Glass
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Aluminum Window Frames
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Window Replacement
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Double-Hung
B & L Glass
Santa Rosa, CA-
Good Customer Service
Services Offered
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Stained Glass
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Custom Window Designs
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Double-Hung
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Full-Service Installations
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Aluminum Window Frames
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Commercial Windows
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Fast Delivery
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Window Replacement
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Glass Showers
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Bay Windows
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Residential Windows
GreenRun Construction - General Contractors
Santa Rosa, CA-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Custom Window Designs
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Commercial Windows
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Glass Showers
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Residential Windows
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Bay Windows
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Window Replacement
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Stained Glass
Blyss Construction Santa Rosa
Santa Rosa, CA-
Free assessment
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Good Customer Service
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Price Transparency
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Timely Service
Services Offered
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Window Replacement
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Double-Hung
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Aluminum Window Frames
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Custom Window Designs
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Commercial Windows
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Residential Windows
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Bay Windows
Pella Windows & Doors of Northern California
Rohnert Park, CA-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Bay Windows
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Custom Window Designs
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Window Replacement
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Double-Hung
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Sliding Glass
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Residential Windows
Nor Cal Glass Products
Rohnert Park, CA-
Price Transparency
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Good Customer Service
Services Offered
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Window Replacement
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Glass Showers
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Bay Windows
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Custom Window Designs
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Residential Windows
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Commercial Windows
Northwest Exteriors
Santa Rosa, CA-
Educational Website
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Free assessment
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Timely Service
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Price Transparency
Services Offered
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Window Replacement
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Custom Window Designs
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Residential Windows
Home Services at The Home Depot
Rohnert Park, CA-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Glass Showers
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Custom Window Designs
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Fast Delivery
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Residential Windows
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Stained Glass
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Window Replacement
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Commercial Windows
Novato Glass Inc
Novato, CA-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Custom Window Designs
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Window Replacement
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Double-Hung
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Commercial Windows
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Glass Showers
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Full-Service Installations
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Residential Windows
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Bay Windows
Javco Window & Glass Contractors Inc
Napa, CA-
Free assessment
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Educational Website
Services Offered
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Residential Windows
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Commercial Windows
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Window Replacement
Window Factory
Greenbrae, CA-
Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Residential Windows
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Aluminum Window Frames
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Custom Window Designs
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Fast Delivery
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Window Replacement
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Bay Windows
Charles Window & Door Company
San Rafael, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Residential Windows
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Window Replacement
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Bay Windows
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Double-Hung
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Custom Window Designs
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Sliding Glass
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Full-Service Installations
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Aluminum Window Frames
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Glass Showers
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Fast Delivery
Vallejo Glass Inc.
Vallejo, CA-
Free assessment
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Good Customer Service
Services Offered
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Bay Windows
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Energy-Efficient Options
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Fast Delivery
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Full-Service Installations
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Glass Showers
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Custom Window Designs
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Residential Windows
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Window Replacement
The Glass Guru
Fairfield, CA-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
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Timely Service
Services Offered
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Custom Window Designs
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Glass Showers
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Full-Service Installations
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Window Replacement
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Residential Windows
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Double-Hung
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Window Repair
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Tempered Glass
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Sliding Glass
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Commercial Windows
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Stained Glass
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Aluminum Window Frames
Window Replacement Fairfield
Fairfield, CA-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
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Timely Service
Services Offered
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Sliding Glass
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Bay Windows
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Residential Windows
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Custom Window Designs
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Glass Showers
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Stained Glass
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Window Replacement
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Double-Hung
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Fast Delivery
Wilson Construction
El Sobrante, CA-
Good Customer Service
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Free assessment
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Price Transparency
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Timely Service
Services Offered
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Fast Delivery
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Custom Window Designs
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Double-Hung
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Residential Windows
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Window Replacement
A-Taylor Made Window
Richmond, CA-
Timely Service
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Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Window Replacement
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Commercial Windows
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Bay Windows
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Residential Windows
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Custom Window Designs
J & D Glass & Sash Inc
Berkeley, CA-
Educational Website
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Commercial Windows
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Glass Showers
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Window Replacement
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Bay Windows
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Residential Windows
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Custom Window Designs
Tom's Glass Co.
Vacaville, CA-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Custom Window Designs
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Window Replacement
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Fast Delivery
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Residential Windows
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Double-Hung
Calculate how much you can expect to pay for window installation and replacement in Cotati, CA using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Cotati Saves You Money
When you upgrade to energy-efficient windows, you may see several perks, including:
- More efficient energy usage in your home: In Cotati where the winters can get very cold, energy-efficient windows reduce how much heat is lost through your windows, which makes it easier to keep your house warm.
- Save on power bills: The Department of Energy estimates that heat gained or lost via windows makes up around 25-30% of energy use in your home. Upgrading to energy-efficient windows can help decrease that number, which helps you save $418 a year on your bills.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes usually have windows that are outdated, drafty or potentially even damaged in some way. Updating your windows could help increase the value of your property if you decide to sell.
Estimated Cost of Window Replacement in Cotati
When researching window installation, each company offers varying services and costs. Let's take a look at some typical costs and services.
How Much Do New Windows Cost?
Although the typical of installing one window is around $600, it can range from $200 to $1,200. How much it will cost you varies based on several factors, including material, number of windows, the location of your home, size, type and more.
With windows, efficiency is one of the most important factors for many homeowners. High efficiency windows may cost more upfront, but by increasing the efficiency of your home — particularly during the summer and winter — they can provide many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Cotati homeowners $418+ a year after replacing single-pane windows.
Costs will also vary depending on the material you pick for your window frames. Aluminum frames cost the least. They're sturdy, light and maintenance-free, but provide poor insulation. Vinyl frames are somewhat 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 step when considering a window installation is to decide whether you should get a full-frame or pocket installation.
A full-frame installation is a replacement of the full window. It involves removing the old window, the sill, and the exterior and interior trim. It also involves other materials, such as insulation and drip edges, which increase the total cost of the project. Also worth noting: it's not uncommon for homeowners to 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 without replacing the frame. Pocket installations are on the simpler end 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.
Your window installer should be able to help you choose which type of installation you need.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Cotati
EcoWatch reviews differ from other reviews because we examine these companies through a sustainability lens. Along with energy efficiency, we assessed each installer and assigned rankings based on the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find the best window installation company near you.
Work Quality
When installing new windows, the quality and range of services often plays just as important of a role in overall efficiency and performance as the type of window you choose. We do rate window installers higher 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 feedback about their experience with a certain installer, you won't see it featured on EcoWatch.
Cost
This one is a give-and-take: similar to most services, cheap window installers won't always provide the most quality service. On the other hand, we want to make sure we're highlighting companies that provide a variety of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a good track record in the industry. Window installation companies that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Cotati, CA Window Replacement FAQs
How much should window installation cost?
The national average cost to install one window is about $600 but can range from $200 to $1,200, depending on a few different factors. The price is usually influenced by the location of your property, the size of the window and the type and material of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What are the most common types of replacement windows?
The most common kinds of windows for homes are double-hung and single-hung windows, transom windows, awning windows, picture windows, slider windows, casement windows and bay windows.
Can you replace your own windows?
Even though you can install your own windows, doing so requires a lot of time and handiness. Using a window installation company can help guarantee that the installation is done properly and that you can avoid spending the time and effort of doing it yourself.
What time of year is a good time to replace my windows?
Replacement windows can be installed at any time, but autumn might be the best season. Regardless of when you install them, the contractors will take steps to ensure that too much hot or cold air doesn't get into your home, so the temperature outside isn't necessarily a big factor. What's more important than the temperature is that the weather should be dry.