27 Best Window Replacement Companies in Angwin, CA (Mar 2023)
Window Companies Near Me

Thinking of improving your home's energy efficiency? The top window replacement companies can help.

We analyzed all the top window installers in Angwin and selected the top 27 based on:

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

By EcoWatch Local Advisors

Updated March 14, 2023

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.

Whether you're doing renovations or have old windows, windows play a vital role in conserving your home's energy. During the hot summer months, the last thing you want is your cool air to leak out of your outdated, drafty windows.

Replacement windows improve your home's insulation, not only making you and your family more comfortable during the summer and winter, but also saving you some money and helping the environment.

Efficient windows are particularly important in Angwin, where summers are long and hot. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $518 each year.

Best Affordability

Window World

★★★★★
4.5

  • Lifetime warranty
  • Low prices relative to competitors
  • Large serice area
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Great industry reputation
  • Member of US Green Building Council
  • More expensive than competition

Excellent Reputation

Milgard Windows & Doors

★★★★★
4.5

  • EnergyStar Partner
  • Wide network of installers
  • Lifetime warranty available
  • Limited additional services

Best Window Replacement Companies in Angwin

The EcoWatch Reviews team evaluated dozens of installers in Angwin to find the best window installation companies for our readers. The providers mentioned in this article passed our review standards for energy-efficient offerings as well as customer service, local expertise, price and beyond.

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

Window World

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

Window World offers windows expertise in Angwin. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the industry, and it currently provides services to 200 locations nationwide.

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 Windows

Window World is an Energy Star partner and has a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.

How much does Window World cost in Angwin?

Prices are not available on Window World's website, as the cost of window replacement varies greatly based 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. Requesting a free quote on its website is the best way to get more accurate information.

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 Award-winning company
  • Pros icon Great industry reputation
  • Pros icon Member of US Green Building Council
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and currently provides services to nearly every state except Mississippi and West Virginia. The company has plenty of glowing reviews from customers on online review websites.

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 Windows

Renewal by Andersen is an Energy Star partner with a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Angwin?

Although pricing is not available on Andersen's website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to know for sure is to request a free quote from the company.

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 Limited additional services

Milgard Windows & Doors offers the best local installation in Angwin. This company has been operating since 1962 and currently serves Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. Many positive reviews from customers online back the provider's reputation.

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

There are a wide range of window types available from Milgard Windows & Doors, some of which are Energy Star products. 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 Angwin?

Milgard does not outline prices on its website, but it offers different kinds of windows at varying price points. If you'd like more accurate pricing information, you can ask for 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 is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has been in the window installation industry for about 20 years. Its reputation is backed by a considerable amount of positive reviews from customers online.

If you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, this may be the company for you.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct's commitment to sustainability can be seen in its energy-efficient window offerings. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.

How much does Universal Windows Direct cost in Angwin?

Universal doesn't have any cost information listed on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. You can request a free quote on its website for more information about the cost.

We've recommended installers with shining reputations, but keep in mind some national companies have independently owned locations in Angwin, so the quality of service may vary depending on your local crew. We have tried to remain unbiased and transparent by including pros and cons for each company reviewed.

More Window Replacement Companies in Angwin

The Glass Guru

Fairfield, CA
4.3
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Consistent Workmanship
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.theglassguru.com/fairfield-vacaville-ca/
Address: 1601 Enterprise Dr Unit 14, Fairfield, CA 94533
Phone: (707) 348-9539

Window Replacement Vallejo

Vallejo, CA
4.0
★★★★★
  • Pros icon Dependable Service
  • Pros icon No-fee Quotes
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://bestexteriors.com/
Address: 116 Springstowne Center, Vallejo, CA 94591
Phone: (707) 515-0257

Window Replacement Vacaville

Vacaville, CA
4.0
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Appointment Windows
  • Pros icon Price Transparency

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://bestexteriors.com/
Address: 2061 Peabody Rd, Vacaville, CA 95687
Phone: (707) 317-1074

Northwest Exteriors

Santa Rosa, CA
3.8
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Free Quotes
  • Pros icon Reliable Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung

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

Save Energy Company

Petaluma, CA
3.8
★★★★★
  • Pros icon Dependable Service
  • Pros icon Free Quotes
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.saveenergyco.com/
Address: 315 Petaluma Blvd S, Petaluma, CA 94952
Phone: (415) 492-1814

Affordable Windows Vacaville

Vacaville, CA
3.8
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Timely Service
  • Pros icon No-fee Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://affordablehousewindowsnearme.com/
Address: 2061 Peabody Rd, Vacaville, CA 95687
Phone: (916) 382-0551

California Glass of Vallejo, Inc.

Vallejo, CA
3.7
★★★★★
  • Pros icon Dependable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Award-Winning
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Glass Showers
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Business Windows

Website: http://www.calglassofvallejo.com/
Address: 1014 Broadway, Vallejo, CA 94590
Phone: (707) 643-5609

Vallejo Glass Inc.

Vallejo, CA
3.4
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Business Windows
  • Service icon Aluminum Window Frames
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options

Website: https://vallejoglass.com/
Address: 205 Couch St, Vallejo, CA 94590
Phone: (707) 644-4447

R & S Glazing Specialties

American Canyon, CA
3.4
★★★★★
  • Pros icon Reliable Service
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Heavy Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: http://www.rsglazing.com/
Address: 5353 Napa Vallejo Hwy, American Canyon, CA 94503
Phone: (707) 257-7111

Novato Glass Inc

Novato, CA
3.3
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Sliding Glass

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

ClimatePro

Rohnert Park, CA
3.3
★★★★★
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service
  • Pros icon Educational Website
  • Pros icon Timely Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://www.climatepro.com/
Address: 6145 State Farm Dr, Rohnert Park, CA 94928
Phone: (707) 755-7337

The Window Cleaning Specialists, LLC

Santa Rosa, CA
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Business Windows

Website: https://www.windowcleaningspec.com/
Address: 3558 Round Barn Blvd ste 200, Santa Rosa, CA 95403
Phone: (707) 690-0298

Jack Smith Glass & Sash Inc.

Santa Rosa, CA
3.2
★★★★★
  • Pros icon Educational Website
  • Pros icon Free Quotes
  • Pros icon Reliable Service
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Sliding Glass

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

All Window & Door

Petaluma, CA
3.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Free Quotes
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: http://www.allw-d.com/
Address: 432 Garfield Dr, Petaluma, CA 94954
Phone: (415) 948-4522

Roofing | Windows | Landscaping | Concrete Grinding | Eagle Construction

Vallejo, CA
3.0
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Windows
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass

Website: https://eagleconstructionroofing.com/
Address: 623 Tuolumne St, Vallejo, CA 94590
Phone: (707) 558-8246

Tom's Glass Co.

Vacaville, CA
3.0
★★★★★
  • Pros icon Educational Website
  • Pros icon No-fee Quotes
  • Pros icon Consistent Workmanship
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Double-Hung

Website: https://tomsglasscompany.com/
Address: 713 Merchant St Ste E, Vacaville, CA 95688
Phone: (707) 448-7151

Home Services at The Home Depot

Vacaville, CA
3.0
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Price Transparency
  • Pros icon Dependable Service
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Fast Delivery
  • Service icon Glass Showers

Website: https://www.homedepot.com/l/Vacaville/CA/Vacaville/95687/1043/services
Address: 510 Orange Dr, Vacaville, CA 95687
Phone: (707) 296-1250

See Through Glass and Door

Petaluma, CA
3.0
★★★★★
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Heavy Glass
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: http://www.seethroughgd.com/
Address: 4216 Petaluma Blvd N, Petaluma, CA 94952
Phone: (707) 775-8626

Glass Shop of the North Bay

Petaluma, CA
3.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Doors
  • Service icon Full-Service Installations
  • Service icon Custom Windows
  • Service icon Tempered Glass
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: http://glassshop.me/
Address: 1329 Scott St # G, Petaluma, CA 94954
Phone: (707) 762-1900

B & D Windows & Sash Co

Clearlake Oaks, CA
2.9
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Price Transparency
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Custom Window Designs

Website: http://www.bdcustomwindows.com/
Address: 12586 Foothill Blvd, Clearlake Oaks, CA 95423
Phone: (707) 998-3717

American Window Systems, Inc.

Napa, CA
2.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon No-fee Quotes
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows

Website: https://www.amwinsys.com/
Address: 1729 Action Ave suite b, Napa, CA 94559
Phone: (707) 258-0880

Santa Rosa Windows & Glass

Santa Rosa, CA
2.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Custom Windows
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass

Website: http://www.santarosaglassreplacement.com/
Address: 1042 Hopper Ave #3E, Santa Rosa, CA 95403
Phone: (707) 282-5700

Decor Shower Door & Glass Co

Napa, CA
2.9
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Sliding Glass
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: http://www.decornapa.com/
Address: 1819 Tanen St # A, Napa, CA 94559
Phone: (707) 253-0622

Denton's Glass Co.

Santa Rosa, CA
2.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Sliding Glass

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

Golden West Glass Company, Inc

Sonoma, CA
2.9
★★★★★
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Good Customer Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: http://www.goldenwestglass.com/
Address: 18153 Sonoma Hwy, Sonoma, CA 95476
Phone: (707) 939-9604

B & L Glass

Santa Rosa, CA
2.8
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Commercial Windows

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

Dee Jay's Sash & Glass, Inc.

Santa Rosa, CA
2.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Business Windows

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

How Installing Energy-Efficient Windows in Angwin Saves You Money

Switching to energy-efficient windows can improve the comfort of your home and help you save on energy bills. Here are more ways switching out your windows could benefit you:

  • Protect your investment: If you have a relatively old home, your windows are most likely in need of replacement. Upgrading your windows can make your home more comfortable and also help raise the value of your property if you decide to sell.
  • Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
  • Decrease your carbon footprint: Decreasing the amount of energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by about 117 pounds.
  • Save money on electricity bills: According to the Department of Energy, heat gained or lost through windows accounts for about 25-30% of household energy use. Switching to energy-efficient models can help lower how much you have to pay, therefore saving you about 12% more on your bills.

Estimated Cost of Window Replacement in Angwin

Windows come in varying shapes and sizes, so costs and services will vary considerably. Here are the average costs and services that you can find from window installation companies.

How Much Do New Windows Cost?

On average, homeowners in Angwin can expect that most window installations will range from $250 to $1,200, with the most common installations sitting at around $600. But costs will vary significantly based on the current condition of your home, the number of windows you need, the quality of your products and your location. Many window companies also offer replacement door installations and other add-ons like baths, shutters, coating and more. These extra services will increase overall project costs.

Bear in mind that energy-efficient windows may cost more upfront, but Energy Star estimates the upgrade will save you between $101 and $583 a year when replacing single-pane windows and between $27 and $197 a year when replacing double-pane, clear glass windows. Your exact savings will vary depending on your local climate, energy rates and individual home characteristics.

We recommend getting free quotes from several window installation companies to find the right windows and the company that works best for you.

What Services do Window Installers Offer?

The first question to ask yourself when planning a window installation is: Do you need a full-frame installation or a pocket installation?

Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are typically done when you want a different style for your windows or when it has a great amount of damage. Full-frame installations require more time and labor and will increase overall costs. A pocket installation entails replacing a window within the old frame. This means instead of taking out the whole unit and reinstalling it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.

Your window installation company can advise you on the best type for your project. In Angwin, the decision will mostly be based on how much damage there is currently and how old your existing frames are.

Best Affordability

Window World

★★★★★
4.5

  • Lifetime warranty
  • Low prices relative to competitors
  • Large serice area
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Great industry reputation
  • Member of US Green Building Council
  • More expensive than competition

Excellent Reputation

Milgard Windows & Doors

★★★★★
4.5

  • EnergyStar Partner
  • Wide network of installers
  • Lifetime warranty available
  • Limited additional services

How We Choose the Best Window Installers in Angwin

EcoWatch reviews are different from other reviews, as we evaluate these companies through a sustainability lens. We've decided to review the best window installation companies in Angwin mostly based on energy efficiency, as it's the most sustainable option and the best one for homeowners. Energy-efficient windows have been shown to lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Because this is a guide for Angwin, we only included companies that serve the city. There are certainly other reputable providers that didn't make the list because of the low odds that they would serve the average homeowner in Angwin.

Work Quality

We're willing to bet that you're looking for a company to do a great job installing windows. We've vetted each company included in our guide to make sure its contractors are well-qualified and that the company has received lots of positive customer feedback to vouch for its service.

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 company, you won't see it featured on EcoWatch.

Cost

Cheaper windows certainly don't mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important. For that reason, window installation companies with 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 been in the industry for quite some time. Window installation companies that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Angwin, CA Window Replacement FAQs

How much does a window install cost?

The national average cost to install one window is about $600 but can range from $200 to $1,200, depending on several factors. The price is typically influenced by the size of the window, the type and material of the window and the location of your property. 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 kind of window is the most energy-efficient?

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

Can I replace my own windows?

Even though you can install your own windows, doing so is time-consuming and requires a lot of handiness. Using a window installation company can help ensure that the installation is done properly and that you can avoid spending the time and effort of doing it yourself.

How long does window installation generally take?

Each window takes around 30 minutes to install based on the type of window. However, the window installation can take two days or more if you need to have a lot of windows installed.

When is the best time of year to replace windows?

Replacement windows can be installed during any season, but autumn might be best. No matter when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into the house, so the temperature outside doesn't necessarily matter that much. What's most important is that the weather should be dry.

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