20 Best Window Companies in Fountain Valley, CA (2023 Reviews)

If you're thinking about upgrading to new windows, our list of the best window installation companies can help.

We analyzed all the top-rated window companies in Fountain Valley 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 September 15, 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.

Although eco-friendly energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your house's efficiency can also have a large impact on home energy conservation. During the hot summer months, the last thing you want is your cool air to leak out of your outdated windows.

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

We've made this list of the top installation companies to help you in your research, so you can not only enjoy brand new windows, but also save money on your electricity bills.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Fountain Valley

The EcoWatch Reviews team assessed dozens of installers in Fountain Valley to find the best window replacement companies for our readers. The providers mentioned in this article scored the best in our review categories, such as energy-efficient offerings, availability, local expertise, price, customer service 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 is the largest window replacement company in the country, known for its vinyl windows and affordability. This provider has 27 years of experience in the window installation industry, and it has become one of the most reputable companies in the business.

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

Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s windows are Energy Star certified, so make sure you mention that you’re interested in Energy Star windows when inquiring.

How much does Window World cost in Fountain Valley?

Prices aren’t displayed on Window World’s website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to receive 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 Entails hiring third-party contractors
  • Pros icon Limited additional services

Milgard Windows & Doors is a family-owned and -operated window replacement company, which primarily serves the West Coast. This provider has 60 years of experience in the window installation industry, and it has become one of the most reputable companies in the business. Its reputation is backed by several positive reviews on customer 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 appeals to eco-conscious consumers by providing energy-efficient window offerings. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.

How much does Milgard Windows & Doors cost in Fountain Valley?

Pricing details are not available on Milgard’s website since the cost of window replacement depends on how many and what type(s) of windows you need. However, it offers different kinds of windows at varying price points. You can request a free quote on its website for more information about pricing.

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 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 most reputable companies in the business. Its reputation is backed by several positive reviews on customer 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 appeals to eco-conscious consumers by providing energy-efficient window offerings. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in Fountain Valley?

Pricing details are not available on Andersen’s website since the cost of window replacement depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can request a free quote on its website for more information about pricing.

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 Fountain Valley. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has been in the window business for about 20 years. The provider has plenty 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, Universal may be the perfect provider for you.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you 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 Fountain Valley?

Universal doesn’t have any pricing 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 pricing.

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

More Window Companies in Fountain Valley

Renewal by Andersen of Orange County

Laguna Hills, CA
4.5
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Sliding Glass
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Stained Glass
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Glass Showers

Website: https://www.renewalbyandersen.com/window-company/089-orange-county-ca/about-us
Address: 22982 Alcalde Dr, Laguna Hills, CA 92653
Phone: (949) 265-7600

Window World of Orange County

Anaheim, CA
3.6
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Sliding Glass

Website: https://www.windowworldorangecounty.com/
Address: 1534 N State College Blvd, Anaheim, CA 92806
Phone: (714) 709-8885

Save-On Glass & Screen

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

Services Offered

  • Service icon Commercial Windows
  • Service icon Residential Windows
  • Service icon Window Repair
  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Fast Delivery

Website: http://www.save-on-glass.com/
Address: 7793 Westminster Blvd., Westminster, CA 92683
Phone: (714) 893-4275

American Vision Windows

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

Services Offered

  • Service icon Aluminum Window Frames
  • Service icon Stained Glass
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options

Website: https://www.americanvisionwindows.com/locations/orange-county/
Address: 15401 Red Hill Ave Suite F, Tustin, CA 92780
Phone: (714) 551-9302

California Window & Solar

Costa Mesa, CA
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Aluminum Window Frames
  • Service icon Sliding Glass

Website: https://www.cgwindow.com/
Address: 2915 Red Hill Ave b104, Costa Mesa, CA 92626
Phone: (714) 434-8650

Sliding Door Repair Company

Anaheim, CA
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Tempered Glass
  • Service icon Window Repair
  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Custom Window Designs

Website: https://www.slidingdoorrepaircompany.com/
Address: 700 N Valley St Suite J-K, Anaheim, CA 92801
Phone: (949) 325-7033

Atlas Windows and Doors

Costa Mesa, CA
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Sliding Glass
  • Service icon Glass Showers
  • Service icon Double-Hung
  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Stained Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows

Website: http://www.atlaswindowsoc.com/
Address: 1055 El Camino Dr Suite F107, Costa Mesa, CA 92626
Phone: (949) 891-1350

Bodie's Glass Service

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

Services Offered

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

Website: http://www.bodiesglass.com/
Address: 5722 Westminster Blvd., Westminster, CA 92683
Phone: (714) 898-4602

Legendary Doors & Windows

Irvine, CA
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Aluminum Window Frames

Website: http://www.legendarycorp.com/
Address: 18001 Sky Park Cir suite p, Irvine, CA 92614
Phone: (949) 251-1866

California Window Masters

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

Services Offered

  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Commercial Windows
  • Service icon Window Replacement

Website: https://californiawindowmasters.com/los-angeles/
Address: 2102 Business Center Dr STE 130, Irvine, CA 92612
Phone: (855) 464-7665

Anlin Windows & Doors - Service Center

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

Services Offered

  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Window Replacement

Website: https://www.anlin.com/
Address: 1254 N Knollwood Cir, Anaheim, CA 92801
Phone: (800) 899-4896

Home Services at The Home Depot

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

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Stained Glass
  • Service icon Glass Showers
  • Service icon Fast Delivery
  • Service icon Commercial Windows
  • Service icon Window Replacement

Website: https://www.homedepot.com/l/N-Santa-Ana/CA/Santa-Ana/92705/6680/services
Address: 1750 E Edinger Ave, Santa Ana, CA 92705
Phone: (714) 656-9201

Cunningham Doors & Windows

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

Services Offered

  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Window Replacement
  • Service icon Double-Hung
  • Service icon Custom Window Designs

Website: https://www.cunninghamwindows.com/
Address: 1940 E Edinger Ave, Santa Ana, CA 92705
Phone: (714) 258-2500

Newman Windows and Doors - Orange

Orange, CA
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

Website: https://www.newmanwindows.com/orange-county-showroom-windows-doors/
Address: 1521 W Orangewood Ave, Orange, CA 92868
Phone: (714) 744-8230

California Replacement Windows

Fountain Valley, CA
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

Website: https://www.californiareplacementwindow.com/
Address: 11247 Slater Ave, Fountain Valley, CA 92708
Phone: (714) 880-8850

Pacific Shores Windows & Doors

Fountain Valley, CA
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Fast Delivery
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Custom Window Designs

Website: https://www.pacificshoreswindows.com/
Address: 10573 Ellis Ave, Fountain Valley, CA 92708
Phone: (714) 841-2228

DRExteriors Inc

Anaheim, CA
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Timely Service

Services Offered

  • Service icon Window Replacement
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Commercial Windows
  • Service icon Custom Window Designs

Website: https://drexteriorsinc.com/
Address: 1442 E Lincoln Ave, Anaheim, CA 92805
Phone: (800) 220-2615

Best Windows and Doors OC

Anaheim, CA
4.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: https://bestwindowsanddoorssoutherncalifornia.com/
Address: 1550 S Sunkist St Unit K1, Anaheim, CA 92806
Phone: (714) 503-9857

First Class Windows

Garden Grove, CA
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Custom Window Designs

Website: http://1stclassvinylwindows.com/
Address: 10422 Trask Ave ste a, Garden Grove, CA 92843
Phone: (714) 643-9807

Window Restoration and Repair

Los Alamitos, CA
3.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Repair
  • Service icon Double-Hung
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows

Website: https://www.windowrestorationandrepair.com/
Address: 3377 W Cerritos Ave, Los Alamitos, CA 90720
Phone: (562) 493-1590
Fountain Valley Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Fountain Valley, 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 Fountain Valley Saves You Money

Upgrading to energy-efficient windows can improve the comfort of your home and help you save on electricity bills. Here's more information on how upgrading your windows could help you:

  • Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, drafty or maybe even damaged in some way. Updating your windows could help increase the value of your property if you decide to sell.
  • Better temperature control in your home: Energy-efficient windows can reduce the amount of heat lost through your windows when heating your home.
  • Save money on electricity bills: Installing energy-efficient windows reduces your energy bills by about 12% since you use less energy.
  • Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out damaging UV rays.

Estimated Cost of Window Replacement in Fountain Valley

Each window installation company offers varying services and has different price points based on a few factors.

How Much Do New Windows Cost?

The national average cost to replace one window is about $600 but can range anywhere from $200 to $1,200. How much it will cost you depends on several factors, including type, number of windows, the location of your home, material, size and more.

Whether or not you pick energy-efficient windows is another factor that will influence the cost. These will typically cost more than other windows, but on the other hand, you can save about $388 a year on your energy bills in Fountain Valley.

Costs will also vary depending on the material you want for your window frames. Aluminum frames are the least expensive. They're sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made with wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They're also aesthetically pleasing and provide decent insulation for your home.

What Services do Window Installers Offer?

Generally, there are two types of window replacement services you can get: 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 kind of installation requires more time and labor, it will cost more than a pocket installation. Pocket installations are simpler and won't carry as large a bill because they entail merely replacing the window within its existing frame. But if the frame has any damage or deterioration, you may have to get a full-frame installation instead.

Your window installation company should be able to help you decide which type of installation you should get.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Fountain Valley

In our hunt to find the most reliable, eco-friendly window installers in Fountain Valley, the EcoWatch Reviews team examined dozens of companies before deciding on these. Along with energy efficiency, we evaluated each installer 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 Fountain Valley so you can find a quality window installation company near you.

Work Quality

When it comes to new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the brand you opt for. 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

We analyzed trends in recent customer feedback to determine the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across nearly every category, including quality of parts, professionalism, cost, quality of installation, warranty and more.

Cost

Cheaper windows certainly don't mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing providers' prices, 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 to many homeowners. That's why window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for a while. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.

Fountain Valley, CA Window Replacement FAQs

What is the typical cost to replace windows?

The average cost to install one window can range between $450 and $650. There are several factors that influence the cost, including styles and sizes of windows, your property's location, how energy-efficient the windows are, the number of windows, local labor costs and the materials used in designing the windows.

Which kind of window is the best?

A window's energy efficiency is influenced by a variety of factors, including the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are typically the most energy-efficient and are certified by the U.S. Department of Energy.

Can I replace my own windows?

If you're handy and have experience with installing a replacement window, it's possible to install your own windows. However, if you don't have the time or skills, we recommend getting a professional to do it for you.

Should I replace my windows all at once?

If your windows are greater than 20 years old, you most likely need to replace all of them. At that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less stress.

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