20 Best Window Companies in Lenwood, CA (2023 Reviews)

Thinking about replacing your windows? We've got all the information you need in this guide to the best window installation companies.

We analyzed all the top-rated window companies in Lenwood 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.

Whether you're updating for style or have damaged windows, windows play a crucial 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 During the hot summer months, the last thing you want is your cool air to leak out of your outdated, drafty windows.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 the insulation in your home, not only making you and your family more comfortable during the summer and winter, but also saving you some money and helping the environment.

We've made a list of the top installation companies to help you in your search, so you can not only take advantage of 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 Lenwood

The EcoWatch team assessed many window installation companies in Lenwood to find the top ones for our readers. We assessed the installers based on energy-efficient offerings, coverage area, price, local experience, 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 provides windows expertise in Lenwood. 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. Its reputation is backed by many positive reviews on customer review websites.

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, this may be the right company for you.

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 offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Window World cost in Lenwood?

Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate pricing information, 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 provides the best local installation in Lenwood. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has about 60 years of experience in the industry, and it currently provides services to Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. Its reputation is backed by many positive reviews on customer review websites.

If you’re looking for a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience, this may be the right company for you.

Energy Efficiency of Milgard Windows & Doors Windows

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. Not all of Milgard’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Milgard Windows & Doors cost in Lenwood?

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 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 provides the best availability in Lenwood. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the industry, and it currently provides services to nearly every state except Mississippi and West Virginia. Its reputation is backed by many positive reviews on customer review websites.

If you’re looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the right company for you.

Energy Efficiency of Renewal by Andersen Windows

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. Not all of Andersen’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Lenwood?

Andersen does not outline 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 more accurate pricing information, 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 has the best warranty in Lenwood. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has about 20 years of experience in the windows industry, and it currently provides services to 27 states nationwide.

Universal may be the company for you if you want one that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

Universal 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 Lenwood?

Prices aren’t available 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. If you’d like more accurate pricing information, you can request a quote on the company’s website.

We aim to remain unbiased and transparent by including pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.

More Window Companies in Lenwood

Home Services at The Home Depot

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

Services Offered

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

Website: https://www.homedepot.com/l/Barstow/CA/Barstow/92311/6972/services
Address: 1100 L St, Barstow, CA 92311
Phone: (760) 279-3155

Victorville Glass Co Inc

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

Services Offered

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

Website: http://www.victorvilleglass.com/
Address: 15296 7th St, Victorville, CA 92395
Phone: (760) 245-3456

Vern's Glass

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

Services Offered

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

Website: http://www.vernsglass.com/
Address: 15361 Anacapa Rd, Victorville, CA 92392
Phone: (760) 241-0994

Lindsay Windows California

Apple Valley, CA
3.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

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

Website: http://lindsaywindows.com/
Address: 13510 Central Rd, Apple Valley, CA 92308
Phone: (760) 240-4837

ABC Glass & Screens

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

Services Offered

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

Website: https://www.abcglassandscreen.com/
Address: 12180 Ridgecrest Rd STE 530, Victorville, CA 92395
Phone: (760) 245-8355

High Desert Window & Glass

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

Services Offered

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

Website: http://highdesertwindowandglass.com/
Address: 10750 I Ave, Hesperia, CA 92345
Phone: (760) 947-5254

Thunderbird Glass Co

Hesperia, CA
3.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations

Website: http://tbglassco.com/
Address: 17130 Main St suite d, Hesperia, CA 92345
Phone: (760) 981-7979

San Bernardino Safe Glass Window Replacement INC.

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

Services Offered

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

Website: https://safeglassco.com/
Address: 1485 N Waterman Ave suite 101, San Bernardino, CA 92405
Phone: (909) 991-5190

The Glass Guru

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

Services Offered

  • Service icon Aluminum Window Frames
  • Service icon Tempered Glass
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Window Replacement
  • Service icon Sliding Glass
  • Service icon Window Repair
  • Service icon Commercial Windows
  • Service icon Glass Showers
  • Service icon Stained Glass
  • Service icon Custom Window Designs

Website: https://theglassguru.com/locations/redlands-ca/
Address: 370 Alabama St # M, Redlands, CA 92373
Phone: (909) 245-8058

United Builders Windows & Doors

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

Services Offered

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

Website: https://unitedbuilders.info/
Address: 13238 White Fir Ct, Rancho Cucamonga, CA 91739
Phone: (909) 969-8976

Retro Windows and Patio Doors LLC

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

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass
  • Service icon Tempered Glass
  • Service icon Commercial Windows
  • Service icon Window Repair
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs

Website: http://www.retrowindowsanddoors.com/
Address: 9590 Catawba Ave, Fontana, CA 92335
Phone: (909) 500-4845

Inland Empire Handyman Steve HandymanHandyhand.com

Bloomington, CA
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Aluminum Window Frames
  • Service icon Sliding Glass
  • Service icon Stained Glass
  • Service icon Window Replacement

Website: http://handyhandhandyman.com/
Address: 10979 Maple Ave, Bloomington, CA 92316
Phone: (562) 522-6991

CR Glass inc.

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

Services Offered

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

Website: http://crglassrancho.com/
Address: 509 W Ave L cc, Calimesa, CA 92320
Phone: (909) 731-0946

Precision Glass & Mirror

Riverside, CA
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

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

Website: http://precision-glassinc.com/
Address: 783 Palmyrita Ave unit b, Riverside, CA 92507
Phone: (951) 688-9748

Best glass and screen

Yucaipa, CA
3.8
★★★★★
  • Pros icon Price Transparency

Services Offered

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

Website: http://www.bestglassandscreen.com/
Address: 35242 Yucaipa Blvd, Yucaipa, CA 92399
Phone: (909) 790-1659

Silver Lining Restoration

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

Services Offered

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

Website: https://silverliningrestoration.net/
Address: 1710 Palmyrita Ave unit 6, Riverside, CA 92507
Phone: (877) 938-0788

WMB Windows

Ontario, CA
3.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

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

Website: http://www.wmbwindows.com/
Address: 491 Kettering Dr, Ontario, CA 91761
Phone: (909) 923-1689

Reliable Doors & Windows

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

Services Offered

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

Website: http://reliabledoorsandwindows.com/
Address: 9375 Archibald Ave, Rancho Cucamonga, CA 91730
Phone: (909) 945-3304

Home Services at The Home Depot

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

Services Offered

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

Website: https://www.homedepot.com/l/NW-Victorville/CA/Victorville/92394/1844/services
Address: 15655 Roy Rogers Dr, Victorville, CA 92394
Phone: (760) 279-3054

Home Services at The Home Depot

Apple Valley, CA
3.5
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

Website: https://www.homedepot.com/l/Apple-Valley-CA/CA/Apple-Valley/92308/6834/services
Address: 12218 Apple Valley Rd, Apple Valley, CA 92308
Phone: (760) 279-3103
Lenwood Window Cost Calculator

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

Energy-efficient windows can benefit you in more than one way. Here are a few reasons you may want to take the plunge and make the switch:

  • Save on power bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% since you need less energy.
  • Protect your investment: When you have an older home, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its value.
  • Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
  • More efficient energy use in your household: In Lenwood where the winters can be very chilly, energy-efficient windows lower how much heat is lost through your windows, which makes it easier to keep your house warm.

Estimated Cost of Window Replacement in Lenwood

Windows come in varying styles, shapes and purposes, so costs and services will vary greatly based on your project. Below, we go over the average cost and services that you can get from window replacement companies.

How Much Do New Windows Cost?

Typically, Lenwood homeowners can expect their replacement window installations to range from $250 to $1,200. The most common installations sit at around $600. How much it will cost varies depending on several factors, like number of windows, size, the location of your home, material, type and more.

Keep in mind that energy-efficient windows may come at a higher price point, but Energy Star predicts the upgrade will save you between $101 and $583 per year when replacing single-pane windows and between $27 and $197 per year when replacing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

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

What Services do Window Installers Offer?

In general, there are two types of window replacement services companies offer: full-frame and pocket installations.

A full-frame installation is a total window replacement. It involves removing the old window, the windowsill, and the exterior and interior trim. It also involves additional materials, such as insulation and drip edges, which raise the overall cost of the project. Also worth noting: you may have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are simpler and won't cost as much, but you can't do this kind of installment if you have any pre-existing rot or water damage.

If you're hiring a reputable window installation company, your company can advise you on the best type for your project. In Lenwood, the choice will mostly be based on the efficiency of your home and the condition of your existing frames.

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 Lenwood

In our search to find the most reliable, eco-friendly window installers in Lenwood, the EcoWatch team chose the above companies as the best window installation companies in the city. Along with energy efficiency, we reviewed several window installers in Lenwood and ranked them based on the following methodology:

Service Area

This one is self-explanatory, but we've chosen to highlight window installers that serve the Lenwood area so you can find the right window installation company near you.

Work Quality

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

Customer Reviews

We analyzed patterns in recent online reviews to find the companies with the most consistent customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including cost, quality of installation, warranty, professionalism, quality of parts and more.

Cost

Cheaper windows certainly don't mean better windows, but we know many of our readers want 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. For that reason, window installation companies that offer 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 installation companies that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.

Lenwood, CA Window Replacement FAQs

What is the typical cost to install windows?

The national average cost of replacing a single window is about $600 but can range between $200 and $1,200, depending on a variety of factors. The price is often dependent on 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 initially but can save you a decent amount of money a year in energy bills.

What are the different types of windows?

The most common types of windows for homes include: bay windows, transom windows, picture windows, awning windows, casement windows, slider windows and double-hung and single-hung windows.

Can I replace my own windows?

If you're handy and know how to replace a window, you may be able to install your own windows. But if you don't have the time or experience, we recommend getting a professional to do it for you.

How do you know it's time to replace your windows?

Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, they probably need to be replaced. Apart from that, if your windows have damage anywhere on them, or they have become difficult to open or close, they may need to be replaced.

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