23 Best Window Replacement Companies in Montrose, MN (Mar 2023)
Window Companies Near Me

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

We analyzed all the top window installers in Montrose and selected the top 23 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.

A guide on the top window replacement companies in Montrose may not seem like the most interesting article on the EcoWatch site, but trust us, windows impact your life more than you might realize. Damaged or outdated windows could lead to having higher power bills during the winter or summer months.

That's not great for your wallet or the environment, but one of the best window installation companies can help with that.

So if you're building a new home, renovating or updating your windows in Montrose, you've found the best place to get started.

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • Great industry reputation
  • EnergyStar Partner
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Member of US Green Building Council
  • Great industry reputation
  • No lifetime warranty

Best for Residential Windows

Window Nation

★★★★★
4

  • Manufactures products in-house
  • Wide variety of products and services
  • Award-winning company
  • Limited service area

Best Window Replacement Companies in Montrose

The EcoWatch Reviews team examined many window companies in Montrose to find the top ones for our readers. The installers in this article scored the best in our review categories, such as energy-efficient offerings, customer service, availability, local expertise, 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 Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon EnergyStar Partner
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in Montrose. Window World has over 27 years of industry experience, and it currently provides services to 200 locations nationwide. Its reputation is backed by all the positive reviews from customers online.

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 offering 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 Montrose?

Window World doesn't have any prices listed on its website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate information is to receive a free quote from the company.

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 Member of US Green Building Council
  • Pros icon Great industry reputation
Cons:
  • Pros icon No lifetime warranty

Renewal by Andersen provides the best availability in Montrose. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window industry for about 27 years. Its reputation is backed by all the positive reviews from customers online.

Andersen may be the company for you if you want one 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 make 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 Montrose?

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. Requesting a free quote on its website is the best way to know for sure.

Window Nation logo
FAST QUOTE
as little as 30 seconds
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Award-winning company
Cons:
  • Pros icon Limited service area

Window Nation provides the best residential windows in Montrose. This company has 16 years of experience in the windows industry, and it has become one of the most respected companies in the business.

Window Nation may be the company for you if you want one that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Window Nation's commitment to sustainability shows in its energy-efficient window offerings. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.

How much does Window Nation cost in Montrose?

Window Nation doesn't have any prices displayed on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. The best way to get more accurate information is to request a free quote from the company.

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 Montrose. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of experience in the window installation sector. The company has many glowing reviews from customers online.

You may want to consider opting for Universal if you're interested in a company that has an industry-leading warranty covering products, parts and workmanship for life.

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 mention that you want 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 Montrose?

Pricing details are not available on Universal's website since the cost of window installment differs based on how many and what type(s) of windows you need. However, 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. Getting a free quote on its website is the best way to get more accurate information.

We've recommended providers with good reputations, but bear in mind that some national companies have independently owned locations in Montrose, so your service may differ depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for each company reviewed.

More Window Replacement Companies in Montrose

Advanced Exteriors, Inc.

Minneapolis, MN
4.2
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Dependable Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

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

Website: https://www.advancedexteriorsmn.com/
Address: Minneapolis, MN
Phone: (763) 537-5117

Builders and Remodelers, Inc.

Fridley, MN
4.1
★★★★★
  • Pros icon Award-Winning
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.buildersandremodelers.com/
Address: Fridley, MN
Phone: (612) 445-2750

Sandau Construction Co. Inc.

Savage, MN
4.1
★★★★★
  • Pros icon Award-Winning
  • Pros icon Timely Service
  • Pros icon Excellent Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Business Windows
  • Service icon Double-Hung

Website: http://www.sandauinc.com/
Address: 9025 Hwy 101 W, Savage, MN 55378
Phone: (952) 403-9100

Perfect Exteriors of Minnesota, Inc

Monticello, MN
4.1
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Consistent Workmanship
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://www.perfectexteriorsmn.com/
Address: 516 Pine St, Monticello, MN 55362
Phone: (763) 271-8700

The Glass Guru

Hopkins, MN
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes

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

Website: https://www.theglassguru.com/west-minneapolis/
Address: 4 Shady Oak Rd, Hopkins, MN 55343
Phone: (952) 856-7354

Younger Exteriors, Inc.

Golden Valley, MN
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free Quotes

Services Offered

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

Website: https://youngerexteriors.com/
Address: 2340 Cavell Ave N, Golden Valley, MN 55427
Phone: (612) 230-1770

Windows and Doors Made Simple

Minnetonka, MN
4.0
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers
  • Pros icon Charitable Giving

Services Offered

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

Website: http://www.windowsanddoorsmadesimple.com/
Address: 5130 Willow Ln, Minnetonka, MN 55345
Phone: (612) 232-0142

Zablocki Roofing Inc.

St Cloud, MN
3.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Service
  • Pros icon Timely 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 Aluminum Window Frames

Website: https://zablockiroofing.com/
Address: 3953 45th Ave SE #5th, St Cloud, MN 56304
Phone: (320) 203-1297

Ryan Collision & Glass Center

Buffalo, MN
3.9
★★★★★
  • Pros icon Free Quotes
  • Pros icon Reliable Appointment Windows
  • Pros icon Charitable Giving
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.ryanchevroletbuffalo.com/ryan-collision-center-and-glass-center.html
Address: 938 1st St NE, Buffalo, MN 55313
Phone: (763) 684-4448

ABC Seamless Siding, Gutters & Windows

Maple Grove, MN
3.8
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon No-fee Quotes
  • Pros icon Reliable Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.goabcseamless.com/
Address: 9060 Zachary Ln N Suite 108, Maple Grove, MN 55369
Phone: (763) 425-4737

Pro Tech Restoration

Monticello, MN
3.8
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes
  • Pros icon Educational Website

Services Offered

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

Website: http://www.protechrestoration.com/
Address: 100 Chelsea Rd, Monticello, MN 55362
Phone: (651) 776-8324

Window Outfitters, Inc.

Savage, MN
3.7
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service
  • Pros icon Locally Recognized for Quality

Services Offered

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

Website: https://www.replacementwindowsmpls.com/
Address: 12605 Creek View Ave, Savage, MN 55378
Phone: (952) 746-6661

Minnesota Rusco

New Hope, MN
3.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes

Services Offered

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

Website: https://minnesotarusco.com/
Address: 5010 US-169 N, New Hope, MN 55428
Phone: (952) 230-5150

Spotless & Seamless Exteriors, Inc.

Maple Grove, MN
3.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers

Services Offered

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

Website: http://www.nomoreseams.com/
Address: 8715 Jefferson Hwy, Maple Grove, MN 55369
Phone: (763) 428-1111

Minnesota Exteriors, Inc.

Osseo, MN
3.7
★★★★★
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Good Customer Service

Services Offered

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

Website: https://minnesotaexteriors.com/
Address: 8600 Jefferson Hwy, Osseo, MN 55369
Phone: (763) 493-5500

Iron River Construction

Chaska, MN
3.7
★★★★★
  • Pros icon Award-Winning
  • Pros icon Reliable Appointment Windows
  • Pros icon Consistent Workmanship
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Business Windows

Website: https://ironriverco.com/
Address: 586 Bavaria Ln, Chaska, MN 55318
Phone: (952) 442-1762

Sunburst Shutters Minneapolis

Zimmerman, MN
3.7
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Stained Glass
  • Service icon Sliding Glass

Website: https://www.sunburstshuttersminneapolis.com/
Address: 13650 254th Ave NW, Zimmerman, MN 55398
Phone: (952) 856-8130

Discount Windows

Eden Prairie, MN
3.6
★★★★★
  • Pros icon Timely Service
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Service
  • Pros icon Price Transparency

Services Offered

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

Website: http://discount-windows.com/
Address: 12484 Alise Pl, Eden Prairie, MN 55347
Phone: (612) 223-5100

Zen Windows Twin Cities

Ramsey, MN
3.6
★★★★★
  • Pros icon Dependable Service
  • Pros icon Free Quotes
  • Pros icon Award-Winning
  • Pros icon Price Transparency

Services Offered

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

Website: https://www.zenwindowstwincities.com/
Address: 6250 Bunker Lake Blvd Suite 108, Ramsey, MN 55303
Phone: (612) 778-5220

Modern Exterior Systems Roofing Contractor & Emergency Roof Repairs

Eden Prairie, MN
3.6
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Full-Service Installations
  • Service icon Commercial Windows

Website: https://modernexteriorsystems.com/
Address: 6927 Rosemary Rd, Eden Prairie, MN 55346
Phone: (952) 206-6339

Ashton McGee Restoration Group LLC

Edina, MN
3.6
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency
  • Pros icon Award-Winning
  • Pros icon Helps Educate Customers

Services Offered

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

Website: http://www.mcgeerestoration.com/
Address: 5555 W 78th St Suite J, Edina, MN 55439
Phone: (952) 426-3736

Your Home Improvement Company

St Cloud, MN
3.4
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free Quotes
  • Pros icon Reliable Service
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Double-Hung

Website: https://www.yourhomeimprovementco.com/
Address: 23823 67th Ave, St Cloud, MN 56301
Phone: (320) 245-4098

NMC Exteriors & Remodeling

Plymouth, MN
3.3
★★★★★
  • Pros icon Award-Winning
  • Pros icon Supports Charities
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers

Services Offered

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

Website: https://www.nmcexteriors.com/
Address: 14505 21st Ave N Suite 226, Plymouth, MN 55447
Phone: (763) 325-1439

How Installing Energy-Efficient Windows in Montrose Saves You Money

By upgrading to energy-efficient windows, you and your family can enjoy several benefits, such as:

  • Save on power bills: Since energy-efficient windows reduce the amount of energy needed to heat or cool your home, they can help you save about $511 annually on your energy bills in Montrose.
  • Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out damaging UV rays.
  • Decrease your carbon footprint: By using less energy after upgrading to Energy Star certified windows, you'll also be lowering your carbon dioxide emissions by about 12%, according to Energy Star.
  • Protect your investment: When you have an older home, your windows could also be outdated or leaky. Keeping your windows up to date is an important part of maintaining your property and its real estate value.

Estimated Cost of Window Replacement in Montrose

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

How Much Do New Windows Cost?

Although the national average of installing one window is around $600, it can range anywhere from $200 to $1,200. Costs will differ significantly based on the number of windows you need, your location, the current condition of your home and the quality of your products. Many window companies also offer replacement door installations and other add-ons like coating, baths, shutters and more. These extra services will increase overall project costs.

Whether or not you opt for energy-efficient windows is another factor that will affect the cost. These will almost always cost more than other windows, but on the other hand, you can save about $511 a year on your energy bills in Montrose.

We recommend requesting free quotes from several window installers to find the one that works best for you.

What Services do Window Installers Offer?

There are generally two kinds of window installation services: full-frame and pocket installations.

Full-frame installations involve replacing the complete window, including the trim, frame and sill. Full-frame installations are necessary when you want to change the style of your windows or your window has noticeable damage or rot. Because full-frame installations are more involved, they will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are simpler and won't cost as much, but you can't do this type of installment if you have any pre-existing rot or water damage.

Your window replacement company should be able to help you understand what's best for your needs. In Montrose, the decision will mostly be based on the age of your windows and if there's any moisture damage. Wood can decay if not properly maintained over the years, so it's a good idea to have a professional check your frames and window sills.

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • Great industry reputation
  • EnergyStar Partner
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Member of US Green Building Council
  • Great industry reputation
  • No lifetime warranty

Best for Residential Windows

Window Nation

★★★★★
4

  • Manufactures products in-house
  • Wide variety of products and services
  • Award-winning company
  • Limited service area

How We Choose the Best Window Installers in Montrose

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

Service Area

This one is self-explanatory, but we've chosen to highlight window installation companies that serve Montrose so you can find the best window installation company near you.

Work Quality

When selecting new windows, the quality and range of services can often play just as important of a role in insulation and performance as the type of window 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

Customer feedback is another very important review factor. If most customers don't have positive feedback about their service from a certain company, it won't be featured on EcoWatch.

Cost

Cheaper windows don't necessarily mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing providers' prices, we gave 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 that have lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Due to Montrose's climate, homeowners need to be wary of rot, low efficiency and water damage. We factored in local experience to reflect the ability of Montrose window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.

Montrose, MN Window Replacement FAQs

How much does a window install cost?

The national average cost of installing a window is around $600 but can range between $200 and $1,200, depending on several 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, keep in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.

What are the most common kinds of replacement windows?

There are various kinds of windows you can get for your home, including slider windows, transom windows, bay windows, casement windows, awning windows, double-hung and single-hung windows and picture windows.

What do window installation companies do?

Window installers go to your property to remove your old windows and replace them with new ones. Some providers install products sold by other companies, whereas others install their own windows. The installer will also clean up after the installation.

How long does window installation typically take?

Since the average installation time is 30 minutes per window, around 16 windows can be installed in a typical 8-hour work day.

How often should you replace windows?

Windows generally have a lifespan of around 20 to 30 years, but anytime you notice damage on your windows, it's a good time to have them checked by an expert to see if they need any repairs or replacements.

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