26 Best Window Replacement Companies in Clearlake, CA (2023 Reviews)
Window Companies Near Me
Thinking about improving your property's value? The best window replacement companies can help.
We analyzed all the top window installers in Clearlake and selected the top 26 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 May 04, 2023
Why you can trust EcoWatch
Although clean energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house's energy efficiency can also have a large impact on home energy conservation. The Department of Energy estimates that heat gained or lost through traditional or outdated windows could represent nearly 30% of heating and cooling costs. In Clearlake, where the energy bills are an average of $35 per month, that's almost $$126 per year wasted.
Fortunately, saving you money with upgraded windows also aligns with our goals of reducing energy usage for the environment.
Unlike other sites, EcoWatch ranks window companies on energy efficiency while also considering cost, customer satisfaction and service area.
Best Affordability
Window World
- Low prices relative to competitors
- Great industry reputation
- EnergyStar Partner
- Quality of service will depend on your area
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Award-winning company
- More expensive than competition
Best Window Replacement Companies in Clearlake
The EcoWatch Reviews team researched dozens of installers in Clearlake to find the best window replacement companies for our readers. We assessed the companies on their energy-efficient offerings, local experience, coverage area, price, customer service and more.

Window World
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Low prices relative to competitors
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Great industry reputation
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EnergyStar Partner
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Quality of service will depend on your area
Window World has windows expertise in Clearlake. This window installation company has been in business since 1995 and currently provides services to 200 locations nationwide. Its reputation is backed by all the positive reviews on customer review websites.
You may want to consider picking Window World 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.
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 Clearlake?Prices are not available on Window World's website, as the cost of window installment depends on how many and what type(s) of windows you need. However, 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.

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
Milgard Windows & Doors is a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has around 60 years of experience in the window installation sector.
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 windows are Energy Star certified, so make sure you mention that you're interested in Energy Star windows when inquiring.
How much does Milgard Windows & Doors cost in Clearlake?Pricing details are not available on Milgard's website because the cost of window replacement differs based on how many and what type(s) of windows you need. However, it offers different kinds of windows at varying price points. You can inquire about a free quote on its website for more information about pricing.

Renewal by Andersen
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Great industry reputation
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Member of US Green Building Council
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Award-winning company
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the window installation industry, and it has become one of the best companies in Clearlake. Its reputation is backed by a considerable amount of positive reviews from customers online.
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 mention that you want 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 Clearlake?Even though 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. If you'd like more accurate information, you can get a quote on the company's website.

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 company has been in business since 2002 and currently provides services to 27 states nationwide. The company has hundreds of positive reviews from customers online.
It has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct caters to eco-conscious consumers by providing 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 Clearlake?Prices aren't listed on Universal's 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. Receiving a free quote on its website is the best way to get more accurate pricing information.
We aim to be unbiased and transparent by describing pros and cons for every provider. Additionally, any partnerships do not influence our reviews.
More Window Replacement Companies in Clearlake
The Glass Guru
N George Washington Blvd, CA-
Good Customer Service
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Award-Winning
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Free assessment
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Timely Service
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Stained Glass
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Aluminum Window Frames
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Full-Service Installations
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Residential Windows
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Tempered Glass
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Double-Hung
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Custom Window Designs
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Sliding Glass
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Commercial Windows
A-1 Guaranteed Heating & Air, Inc
Vallejo, CA-
Award-Winning
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Educational Website
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Free assessment
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Price Transparency
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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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Sliding Glass
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Fast Delivery
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Commercial Windows
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Glass Showers
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Stained Glass
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Custom Window Designs
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Residential Windows
Save Energy Windows and Doors
Petaluma, CA-
Good Customer Service
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Price Transparency
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Timely Service
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Free assessment
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Educational Website
Services Offered
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Bay Windows
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Energy-Efficient Options
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Aluminum Window Frames
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Residential Windows
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Commercial Windows
The Glass Guru
Fairfield, CA-
Timely Service
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Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Stained Glass
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Sliding Glass
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Custom Window Designs
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Double-Hung
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Glass Showers
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Tempered Glass
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Full-Service Installations
The Glass Man
863 Gravenstein Hwy N, 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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Residential Windows
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Commercial Windows
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Bay Windows
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Stained Glass
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Custom Window Designs
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Glass Showers
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Sliding Glass
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Full-Service Installations
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Aluminum Window Frames
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Double-Hung
Window Replacement Fairfield
Fairfield, CA-
Educational Website
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Free assessment
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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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Glass Showers
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Stained Glass
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Custom Window Designs
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Fast Delivery
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Residential Windows
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Sliding Glass
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Bay Windows
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Double-Hung
Vallejo Glass Inc.
Vallejo, CA-
Free assessment
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Good Customer Service
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Educational Website
Services Offered
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Glass Showers
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Residential Windows
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Custom Window Designs
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Energy-Efficient Options
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Aluminum Window Frames
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Fast Delivery
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Full-Service Installations
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Bay Windows
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Double-Hung
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Commercial Windows
B & L Glass
Santa Rosa, CA-
Good Customer Service
Services Offered
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Fast Delivery
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Bay Windows
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Double-Hung
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Custom Window Designs
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Glass Showers
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Stained Glass
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Residential Windows
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Commercial Windows
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Aluminum Window Frames
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Full-Service Installations
Budget Blinds of Yuba City
Olivehurst, CA-
Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Commercial Windows
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Energy-Efficient Options
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Aluminum Window Frames
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Glass Showers
Round Tree Glass
Willits, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Fast Delivery
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Commercial Windows
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Glass Showers
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Residential Windows
Budget Blinds of Fairfield/Vacaville
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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Residential Windows
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Fast Delivery
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Glass Showers
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Commercial Windows
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Aluminum Window Frames
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Custom Window Designs
Novato Glass Inc
Novato, CA-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Bay Windows
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Sliding Glass
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Commercial Windows
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Full-Service Installations
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Glass Showers
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Double-Hung
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Custom Window Designs
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Residential Windows
Moore Home Services
Santa Rosa, CA-
Award-Winning
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Timely Service
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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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Bay Windows
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Custom Window Designs
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Commercial Windows
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Residential Windows
American Window Systems, Inc.
Napa, 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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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Bay Windows
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Fast Delivery
Fairfield Tint Masters
Fairfield, CA-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Double-Hung
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Sliding Glass
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Custom Window Designs
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Glass Showers
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Commercial Windows
Home Services at The Home Depot
Yuba City, 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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Residential Windows
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Fast Delivery
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Stained Glass
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Commercial Windows
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Glass Showers
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Custom Window Designs
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Bay Windows
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Sliding Glass
Buttacavoli Window & Door Inc
Marysville, 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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Glass Showers
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Sliding Glass
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Double-Hung
Home Services at The Home Depot
Ukiah, CA-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Fast Delivery
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Custom Window Designs
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Stained Glass
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Glass Showers
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Double-Hung
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Residential Windows
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Commercial Windows
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Bay Windows
Home Services at The Home Depot
Woodland, CA-
Price Transparency
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Free assessment
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Educational Website
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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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Residential Windows
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Glass Showers
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Custom Window Designs
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Fast Delivery
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Aluminum Window Frames
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Commercial Windows
Santa Rosa Windows & Glass
Santa Rosa, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Fast Delivery
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Sliding Glass
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Glass Showers
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Energy-Efficient Options
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Residential Windows
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Custom Window Designs
Northbay Auto Wraps
Santa Rosa, CA-
Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Bay Windows
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Residential Windows
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Fast Delivery
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Custom Window Designs
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Commercial Windows
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Stained Glass
All Screens
Santa Rosa, CA-
Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Aluminum Window Frames
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Stained Glass
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Residential Windows
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Sliding Glass
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Commercial Windows
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Custom Window Designs
ClimatePro
Cotati, CA-
Price Transparency
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Free assessment
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Good Customer Service
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Educational Website
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Timely Service
Services Offered
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Custom Window Designs
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Commercial Windows
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Bay Windows
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Residential Windows
Siding Installation And Repair
Fairfield, 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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Residential Windows
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Double-Hung
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Custom Window Designs
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Sliding Glass
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Bay Windows
California Glass of Vallejo, Inc.
Vallejo, CA-
Timely Service
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Award-Winning
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Price Transparency
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Good Customer Service
Services Offered
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Commercial Windows
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Full-Service Installations
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Custom Window Designs
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Bay Windows
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Fast Delivery
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Glass Showers
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Residential Windows
Northwest Exteriors
Santa Rosa, CA-
Educational Website
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Timely Service
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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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Energy-Efficient Options
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Fast Delivery
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Aluminum Window Frames
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Residential Windows
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Double-Hung
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Custom Window Designs
How Installing Energy-Efficient Windows in Clearlake Saves You Money
Energy-efficient windows can offer benefits in several ways. Here are a few reasons you may want to take the plunge and make the switch:
- Save money on power bills: Because energy-efficient windows lower the amount of energy needed to heat or cool your home, they can help you save about $516 annually on your energy bills in Clearlake.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its real estate value, particularly if your home is on the older side.
- Reduce your carbon footprint: Reducing the amount of energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 117 pounds per year on average.
Estimated Cost of Window Replacement in Clearlake
Windows come in various purposes, shapes and styles, so costs and services will differ remarkably depending on your project. Below, we detail the typical cost and services that you'll find from window installation companies.
How Much Do New Windows Cost?
Generally, Clearlake homeowners can expect their window installations to range from $250 to $1,200. The most common installations sit at approximately $600. This is because the cost of 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.
It's also worth noting that energy-efficient windows will cost more upfront, but Energy Star estimates that switching out the windows on your Clearlake home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 per year for double-pane windows. The amount of money you'll save by upgrading to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
Another factor that influences the total cost is the material of the frame you select. Aluminum frames are usually the least pricey and are sturdy and light, but they provide poor insulation. On the other hand, wood frames are the most expensive because they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.
What Services do Window Installers Offer?
There are typically two kinds of window replacement services: full-frame and pocket installations.
A full-frame installation replaces the full window, such as the windowsill, frame, trim and the window panes. Because this type of installation requires more time, it will be more expensive than a pocket installation. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.
Your window installation company should be able to help you choose which type of installation you should get.
Best Affordability
Window World
- Low prices relative to competitors
- Great industry reputation
- EnergyStar Partner
- Quality of service will depend on your area
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Award-winning company
- More expensive than competition
How We Choose the Best Window Installers in Clearlake
EcoWatch reviews are different from most reviews because we assess these companies through a sustainability lens. Along with energy efficiency, we analyzed several window installers in Clearlake and assigned rankings based on the following methodology:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Clearlake so you can find the right window installation company near you.
Work Quality
When selecting new windows, the quality and variety of services can often play 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 factor in workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If most customers don't have nice things to say about their service from a certain company, it won't be featured on EcoWatch.
Cost
This one is a give-and-take: similar to most services, cheap window companies may not provide the most quality service. Still, we want to ensure we're highlighting companies that offer a spectrum 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 have 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 installers that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Clearlake, CA Window Replacement FAQs
How much does window installation cost?
The national average cost of replacing a single window is about $600 but can range from $200 to $1,200, based on a few different factors. The price is typically 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 a decent amount of money a year in energy bills.
What are the most common types of replacement windows?
There are several different types of windows you can get for your home, such as picture windows, casement windows, bay windows, double-hung and single-hung windows, transom windows, awning windows and slider windows.
When should I use a window installation company?
You should use a window installation professional whenever you need to replace your windows. Installing windows is a complex process that can be difficult and time-consuming, so it's best left to the professionals.
How long does it usually take to install windows?
Since the average installation time of a window is 30 minutes, around 16 windows can be installed in a typical 8-hour work day.
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 at the same time is the only way to gain that benefit. However, if you have only a few windows that are broken or drafty, you can replace just those.