20 Best Window Companies in Clearlake, CA (2024 Reviews)

If you’re looking to get new windows, our list of the top window installation companies can help.

We analyzed all the top-rated window companies in Clearlake and selected the best 20 based on:

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

By EcoWatch Local Advisors

Updated April 21, 2024

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

A review of the best window replacement companies in Clearlake may not seem like the most riveting article on the EcoWatch site, but trust us, windows have a more direct impact on your life than you might realize. According to the Department of Energy, heat gained or lost through traditional, outdated windows could be responsible for 25-30% of household energy climate control usage.

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

So if you’re building a new home, renovating or changing out old windows in Clearlake, you’ve found the best place to get started.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best Window Installation & Replacement Companies in Clearlake

The EcoWatch team assessed several window companies in Clearlake to find the best ones for our readers. We assessed the installers based on their energy-efficient offerings, coverage area, customer service, local experience, price and more.

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

Window World

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

Window World offers windows expertise in Clearlake. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has over 27 years of industry experience, and it currently provides services to 200 locations nationwide. The company has a lot of positive reviews from customers on online review websites.

It 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 Windows

Window World carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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?

Window World does not detail prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like to know for sure, you can get a quote on the company’s website.

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

Milgard Windows & Doors

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

Milgard Windows & Doors offers the best local installation in Clearlake. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has over 60 years of industry experience, and it currently provides services to Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. The company has a lot of positive reviews from customers on online review websites.

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

Energy Efficiency of Milgard Windows & Doors Windows

Milgard Windows & Doors carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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 Clearlake?

Milgard does not detail prices on its website, but it offers different kinds of windows at varying price points. If you’d like to know for sure, you can get a quote on the company’s website.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen offers the best availability in Clearlake. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has over 27 years of industry experience, and it currently provides services to nearly every state except Mississippi and West Virginia. The company has a lot of positive reviews from customers on online review websites.

It uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

Renewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in Clearlake?

Andersen does not detail prices on its website, but 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 to know for sure, you can get a quote on the company’s website.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct offers the best warranty in Clearlake. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has over 20 years of industry experience, and it currently provides services to 27 states nationwide. The company has a lot of positive reviews from customers on online review websites.

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

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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?

Universal does not detail prices 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. If you’d like to know for sure, you can get a quote on the company’s website.

We have tried to be unbiased and transparent by describing pros and cons for every provider. Additionally, any partnerships do not affect our rankings.

More Window Companies in Clearlake

B & L Glass

Santa Rosa, CA
4.8
★★★★★
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Glass
  • Service icon Energy-Efficient Options
  • Service icon Glass Repair
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Skylights
  • Service icon Glass Doors
  • Service icon Mirrors

Website: https://blglass.com/
Address: 3175 Cleveland Ave, Santa Rosa, CA 95403
Phone: (707) 546-4143

Santa Rosa Window Tint

Santa Rosa, CA
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.santarosawindowtint.com/
Address: 3721 Santa Rosa Ave b4, Santa Rosa, CA 95407
Phone: (707) 879-8468

Jack Smith Glass & Sash Inc.

Santa Rosa, CA
3.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Mirrors
  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Wood Frames
  • Service icon Window Repair
  • Service icon Glass Doors
  • Service icon Skylights

Website: http://www.jacksmithglass.com/
Address: 1050 N Dutton Ave, Santa Rosa, CA 95401
Phone: (707) 544-0640

GreenRun Construction - General Contractors

Santa Rosa, CA
3.4
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows

Website: http://www.greenrunusa.com/
Address: 2175 Bluebell Dr Suite E, Santa Rosa, CA 95403
Phone: (707) 812-7006

American Window Systems, Inc.

Napa, CA
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Skylights

Website: https://www.amwinsys.com/
Address: 1729 Action Ave suite b, Napa, CA 94559
Phone: (707) 244-7260

Round Tree Glass

Willits, CA
4.7
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Glass Repair
  • Service icon Window Repair
  • Service icon Glass Showers
  • Service icon Window Replacement/Installation
  • Service icon Mirrors

Website: http://roundtreeglass.com/
Address: 24 Monroe St, Willits, CA 95490
Phone: (707) 459-6163

Northwest Exteriors

Santa Rosa, CA
3.1
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames

Website: http://www.northwestexteriors.com/
Address: 3450 Airway Dr STE G, Santa Rosa, CA 95403
Phone: (707) 527-7770

The Glass Guru

Yuba City, CA
4.7
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Skylights
  • Service icon Fiberglass Frames
  • Service icon Metal Frames
  • Service icon Window Replacement/Installation
  • Service icon Screen Repair
  • Service icon Window Repair
  • Service icon Custom Glass
  • Service icon Glass Repair
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options
  • Service icon Tempered Glass
  • Service icon Mirrors
  • Service icon Triple Pane Glass
  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Glass Showers
  • Service icon Storm/Impact Windows

Website: https://www.theglassguru.com/yuba-city-ca/
Address: 909 B, N George Washington Blvd, Yuba City, CA 95993
Phone: (530) 296-6323

Denton's Glass Co.

Santa Rosa, CA
3.1
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Glass Doors
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://dentonsglass.com/
Address: 957 W College Ave, Santa Rosa, CA 95401
Phone: (707) 708-0798

Buttacavoli Window & Door Inc

Marysville, CA
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.buttacavoliwindow.com/
Address: 11 E 10th St, Marysville, CA 95901
Phone: (530) 741-2619

Dee Jay's Sash & Glass, Inc.

Santa Rosa, CA
3.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Skylights
  • Service icon Glass Showers
  • Service icon Window Replacement/Installation
  • Service icon Mirrors

Website: http://www.deejaysglass.com/
Address: 2985 Wiljan Ct, Santa Rosa, CA 95407
Phone: (707) 546-7344

Pella Windows & Doors of Northern California

Rohnert Park, CA
3.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Double-Hung

Website: http://www.pellanorcal.com/
Address: 5430 Commerce Blvd #1b, Rohnert Park, CA 94928
Phone: (707) 394-5886

Novato Glass Inc

Novato, CA
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Mirrors
  • Service icon Custom Glass
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Skylights
  • Service icon Glass Showers

Website: http://novatoglassinc.com/
Address: 1020 Reichert Ave, Novato, CA 94945
Phone: (415) 897-5117

Miller Glass Inc

Orland, CA
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Mirrors
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Glass Repair

Website: https://millerglass.com/
Address: 116 Walker St, Orland, CA 95963
Phone: (530) 865-9839

Nor Cal Glass Products

Rohnert Park, CA
3.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Showers
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Mirrors

Website: http://www.norcalglassproducts.com/
Address: 566 Martin Ave A, Rohnert Park, CA 94928
Phone: (707) 206-9660

Home Services at The Home Depot

Rohnert Park, CA
2.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Doors
  • Service icon Storm/Impact Windows
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Screen Repair
  • Service icon Bay Windows
  • Service icon Glass Showers
  • Service icon Vinyl Frames

Website: https://www.homedepot.com/l/Rohnert-Pk/CA/Rohnert-Park/94928/641/services
Address: 4825 Redwood Dr, Rohnert Park, CA 94928
Phone: (707) 296-1203

The Window Design Studio

Petaluma, CA
3.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options

Website: https://thewindowdesignstudio.com/
Address: 280 Monte Vista Ln, Petaluma, CA 94952
Phone: (415) 877-5492

Simonton Windows & Doors - Cornerstone Building Brands

Vacaville, CA
3.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: https://www.simonton.com/
Address: 2019 E Monte Vista Ave, Vacaville, CA 95688
Phone: (800) 746-6686

Hawkins Exteriors Window Replacement Yuba City - Patio & French Door Installation

Yuba City, CA
3.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://hawkinsexteriors.com/
Address: 1257 Hassett Ave, Yuba City, CA 95991
Phone: (530) 671-5044

Javco Window & Glass Contractors Inc

Napa, CA
2.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Custom Glass
  • Service icon Mirrors

Website: https://javcowindowsandglass.com/
Address: 1900 Yajome St, Napa, CA 94559
Phone: (707) 252-8338
Clearlake Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Clearlake, CA using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

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 Clearlake Saves You Money

When you upgrade to energy-efficient windows, you may see several benefits, such as:

  • Decrease your carbon footprint: By using less energy once upgrading to Energy Star certified windows, you’ll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
  • Protect your investment: If your home is on the older side, your windows are most likely outdated. Updating your windows can make your home more comfortable and also help raise the value of your property if you decide to sell.
  • Save money on energy bills: Since energy-efficient windows decrease how much energy you need to heat or cool your home, the switch can help you save around $516 annually on your energy bills in Clearlake.

Estimated Cost of Window Replacement in Clearlake

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?

Even though the average cost of installing one window is around $600, it can range anywhere from $200 to $1,200. But costs will vary considerably depending on the quality of your products, the current condition of your home, the number of windows you need and your location. Many window companies also offer replacement door installations and other add-ons like shutters, coating, baths and more. Additional services will increase your overall project costs.

Whether or not you want to install energy-efficient windows is another factor that will affect the cost. These will typically cost more than other windows, but on the other hand, you can save about $516 a year on your energy bills in Clearlake.

Asking for free quotes from multiple installers is the best way to figure out which one is right for you.

What Services do Window Installers Offer?

When it comes to window installations, there are generally two kinds that your provider will offer: full-frame and pocket installations.

A full-frame installation replaces the full window, including the sill, frame, trim and the window panes. Because this type of installation requires more time and labor, it will cost more than a pocket installation. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations take less time and therefore cost less. But, if the frame has any damage or rot, you should opt for a full-frame installation instead.

If you’re hiring a reputable window installation company, your company will be able to recommend the best type for your project. In Clearlake, the decision will mostly be based on the efficiency of your home and how old your existing frames are.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

How We Choose the Best Window Installers in Clearlake

In our hunt to make your home improvements easier and more eco-friendly in Clearlake, the EcoWatch team evaluated many companies before landing on these. We have reviewed the best window replacement companies in Clearlake mostly based on energy efficiency, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows can reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

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

We’re certain that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer included in our guide to ensure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed trends in recent customer feedback to find the companies with the highest rates of customer satisfaction. Customer satisfaction may be the most important factor, as it indicates the quality of services across most other categories, including cost, quality of installation, quality of parts, professionalism, warranty and more.

Cost

This one is a give-and-take: similar to other services, cheap window installers may not provide the most quality service. On the other hand, we want to ensure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed previously, windows are a significant investment, so you’ll want to be certain that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor 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 are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Clearlake, CA Window Replacement FAQs

What is the typical cost to install new windows?

The national average cost of installing a single window is about $600 but can range between $200 and $1,200, based on a variety of 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 initially but can save you hundreds of dollars a year in energy bills.

Which type of window is the best?

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

What services do window replacement companies do?

Window installation companies will do the entire process — from replacing old windows with new ones to cleaning up after the windows have been put in place. In addition, many companies offer window manufacturing, customization and repairs.

When is the best time of year to replace windows?

Though you can install windows any time of year, warmer weather is often better for installing replacement windows. Additionally, the weather should be dry, since rain can make the installation more difficult.