Best Window Installation Companies [2022 Review]


The EcoWatch Reviews team is all about finding solutions for eco-conscious homeowners. If your windows are made of traditional materials, or are outdated or damaged, you could be sending 25-30% of your home’s heat or AC right out the window.1 That’s bad news for both your wallet and the environment, but one of the best window installation companies can help.

Unlike other review sites, EcoWatch ranks window companies based on energy efficiency while also balancing cost, customer satisfaction and service area. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $583 per year.2

Jump To: 5 Best Window Replacement Companies | Renewal by Andersen Review | Window World Review | Window Nation Review | Universal Windows Direct Review | Aeroseal Windows Review | Window Installation Costs & Services | How We Choose the Best Window Installers | FAQ

5 Best Window Replacement Companies

  • Renewal by Andersen: Best Availability
  • Window World: Window Veteran
  • Window Nation: Best for Residential Windows
  • Universal Windows Direct: Best Warranty
  • Aeroseal Windows & Storefront: Best for Businesses

Window Installation Company Reviews

The EcoWatch Reviews team assessed dozens of installers across the country to find the best window installation companies for our readers. The companies mentioned in this article scored best in our review categories, which include energy-efficient offerings, price, availability, customer service and more.

Please note that the following companies are national, meaning the quality of customer service may vary depending on your local crew. We have tried to remain unbiased and transparent by including pros and cons for each company.

Renewal by Andersen: Best Availability

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. The window installation company has been operating since 1995 and currently has locations in nearly every state except Mississippi and West Virginia.

The company uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started. Hundreds of positive reviews on customer review websites back Renewal by Andersen’s reputation.

Renewal by Andersen at a Glance

Our Rating4.5 Stars
Better Business Bureau (BBB) RatingA
Year Started1995
Geographic Availability48 States: All but MS and WV
Services OfferedReplacement windows, replacement doors, patio doors
Warranty20-year material; 10-year hardware; 2-year installation warranties

Renewal by Andersen Services & Prices

Renewal by Andersen offers window and patio door replacements by teams of certified window installers. The workers will take care of removing and disposing of your old windows before installing and inspecting your new windows.

All Renewal by Andersen windows are made of Fibrex for the frame material, but you can customize your own color, glass and grilles. Below are some of the types of windows offered:

  • Double-hung windows
  • Bay windows
  • Casement windows
  • Picture windows
  • Sliding windows
  • Awning windows
  • Specialty styles (arcs, circles, etc.)

Based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Pricing information is not available on its website, as the cost of window replacements varies greatly depending on how many and what type(s) of windows you need installed. The best way to know for sure is to get a free quote from the company.

Renewal by Andersen offers financing to help customers pay for their window replacement projects.

Renewal by Andersen Energy Efficiency

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 2019.3 Not all of the company’s home windows are Energy Star certified, so be sure to mention that you want high-quality Energy Star windows when inquiring.

We admire that Renewal by Andersen has earned Green Seal’s approval for sustainability. (Green Seal is a nonprofit that reviews products and companies with rigorous standards for environmental impact.) According to the company’s website, Green Seal has estimated that if all windows were as efficient as Andersen windows, Americans would save up to 2.5% of annual energy consumption, or an estimated 200 gallons of oil per household.4

Many of Andersen’s windows are also approved by Scientific Certification Systems (SCS) Global Services — an organization that offers environmental, sustainability and quality certification to products around the world — for the amount of recycled materials they contain.5 The company claims to use 40% reclaimed wood fiber by weight during its wood-window manufacturing process.6

Renewal by Andersen: Pros

  • Select windows recognized as “Most Efficient” by Energy Star
  • Great industry reputation
  • Award-winning company
  • Member of the U.S. Green Building Council
  • Manufactures products in-house

Renewal by Andersen: Cons

  • Does not offer lifetime warranty
  • More expensive than competitors

Window World: Window Veteran

Window World is the largest window replacement company in the country, known for its vinyl windows and affordability as the “Home of the Original $189 Window.”7 Each Window World store is independently owned, which can be beneficial because it will feel more like dealing with a small business. That said, there may also be varying quality and services depending on your local Window World dealer.

As a company, Window World has many admirable qualities, like a foundation to support St. Jude Children’s Research Hospital and a military initiative to honor and serve America’s active military and veterans. It’s also certified for quality and safety by many reputable organizations, including the Environmental Protection Agency (EPA) and Energy Star.8

Window World at a Glance

Our Rating4.5
BBB RatingA+
Year Started1995
Geographic AvailabilityNationwide
Services OfferedReplacement windows and doors, patio doors, storm doors, front doors, garage doors, shutters
WarrantyLifetime coverage

Window World Services & Prices

Window World offers a wide variety of home improvement services that go beyond windows, including entry, storm and garage doors. We’re focused on windows in this review, so here’s a look at some of Window World’s current window options:

  • Vinyl replacements
  • Single-hung windows
  • Double-hung windows
  • Casement windows
  • Awning windows
  • Acrylic block windows
  • Sliding windows
  • Bay windows
  • Bow windows
  • Garden windows
  • Privacy windows
  • Picture windows
  • Basement hopper windows
  • Specialty styles (various shapes)

Window World may have gotten its fame in the 1990s with its $189 window, but you’re not likely to find that price in the 2020s. While pricing information is not readily available on its website, Window World is still known for offering some of the most affordable window installations around. You can request a free quote on its website for more information.

Additionally, Window World offers home improvement financing options through Wells Fargo for qualified homeowners.

Window World Energy Efficiency

Window World is an Energy Star partner, offering a variety of energy-efficient window and door products that are Energy Star certified. Note that not all of the company’s home windows are Energy Star certified, so be sure to ask your Window World representative when inquiring about services.

As an added bonus, Window World is also EPA lead-certified, meaning that installers take extra precaution in older houses by following lead-safe work practices to reduce the risk of lead exposure and take the responsibility for cleaning up any potential lead shavings.9

Window World: Pros

  • Energy Star partner
  • Large service area
  • Wide variety of products and services
  • Great industry reputation
  • Lifetime warranty
  • Known for affordability

Window World: Cons

  • Quality of service may vary depending on location
  • More affordable windows may not be the most high-quality products

Window Nation: Best for Residential Windows

Window Nation was founded in 2006 and has grown to become a widely recognized window and door installer. It serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. The company has showrooms in 13 states but offers services in some neighboring states as long as the home is within 75 miles of a showroom.

Having showrooms is a big benefit, as it gives customers the opportunity to view products and speak to a representative in person. Window Nation currently offers over 1,500 custom window style combinations and more than 95% of its products are Energy Star certified.10

Window Nation at a Glance

Our Rating4.0
BBB RatingA
Year Started2006
Geographic Availability13 States: CT, DE, IL, IN, MA, MD, MN, MO, NC, OH, PA, TN, TX, VA(must be within 75 miles of showroom)
Services OfferedReplacement windows and doors, front doors, roofing services
WarrantyLifetime warranty (parts only)

Window Nation Services & Prices

Window Nation provides a wide variety of windows in many of the leading window brands on the market, like Pella, and even won Pella’s Certified Contractor Service Excellence Award.11 The majority of Window Nation’s windows frames are made from vinyl, with a few wood options.

Window nation provides door and window replacement and installation services, offering eight main types of windows:

  • Double-hung windows
  • Bay windows
  • Bow windows
  • Casement windows
  • Vent windows
  • Garden windows
  • Specialty shape windows
  • Sliding windows

Window Nation does not outline prices on its website, but based on customer feedback, you can expect to pay between $300 to $525 per window installed, making it a more affordable option compared to competitors.

Window Nation Energy Efficiency

According to its website, 95% of Window Nation’s products are Energy Star certified, so there’s no doubt that it carries lots of efficient window options. Each one has window panes 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.12

Window Nation claims it’s making strides toward becoming more sustainable by recycling all of its scrap vinyl and choosing to use more vinyl products over wood because of their longevity.13

Window Nation Pros

  • Award-winning company
  • Wide variety of products and services
  • Custom designs
  • Carries a variety of window brands (including more budget-friendly options)

Window Nation Cons

  • Limited service area
  • Installation not covered by warranty

Universal Windows Direct: Best Warranty

Universal Windows Direct has grown immensely since its inception in 2002, now serving major cities and surrounding areas in 28 states through franchise dealers. The company currently offers vinyl window replacements, door and roof replacements and vinyl siding, along with energy-efficient upgrades and gutter protection services.

Universal has hundreds of glowing reviews from customers on online review websites and an industry-leading warranty covering product, parts and workmanship for life, which are just two reasons we’ve ranked it among the best window installation companies.

Universal Windows Direct at a Glance

Our Rating4.0
BBB RatingA
Year Started2002
Geographic Availability28 states: AZ, CA, CO, FL, GA, IN, ID, IL, IA, KY, MD, MI, MN, MO, NV, NH, NJ, NY, NC, OH, PA, SC, SD, TX, UT, VA, WA, WI
Services OfferedWindow and door replacements, patio doors, front doors, energy-efficiency upgrades, gutter protection, attic insulation, roofing services
WarrantyLifetime warranty

Universal Windows Direct Services & Prices

Universal offers many home improvement services, including energy-efficiency upgrades and insulation. The company is mainly focused on window replacement, though, so it may not be the best option for new construction.

There are seven primary window styles offered by Universal, including:

  • Double-hung windows
  • Sliding windows
  • Crank-out windows
  • Picture windows
  • Bay windows
  • Bow windows
  • Garden windows 

Prices aren’t displayed on Universal Window’s website, but installations typically range between $225 and $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements.

Universal Windows Direct Energy Efficiency

Universal Windows Direct 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.14

There’s a wide range of window types available through Universal’s UniShield packages, including single, double and triple pane Low-E glass windows. Universal Windows Direct also has a page on its website dedicated to educating its customers about what it means to have an Energy Star logo.

Universal Windows Direct Pros

  • Wide variety of products and services
  • Makes charitable contributions
  • Lifetime warranty
  • Manufactures products in-house

Universal Windows Direct Cons

  • Limited service area
  • Some installations carried out by third-party contractors
  • Quality of installation may vary depending on your area

Aeroseal Windows & Storefront: Best for Businesses

If you’re looking for windows for your business or storefront, Aeroseal Windows & Storefront may be the best fit for you. Since 1999, the family-owned company has been installing new and replacing old windows and doors at businesses across the Eastern U.S. The company also specializes in railings.

Aeroseal mainly serves commercial and multifamily properties, so if you’re looking for residential window installations, you probably should refer to one of the other companies on this list.

Aeroseal Windows at a Glance

Our Rating4.0
BBB RatingA+
Year Started1999
Geographic Availability13 States (+ Washington, DC): CT, DE, FL, GA, MA, MD, NC, NH, NJ, PA, RI, TN, VA
Services OfferedCommercial and multifamily replacement windows and doors, glass storefronts, balconies and railings

Aeroseal Windows Services & Prices

Aeroseal supplies and installs commercial products for a wide range of projects, including multifamily buildings, schools, historic buildings, stores and more. Here’s a look at the type of services Aeroseal installers perform:

  • Windows (vinyl, aluminum, wood, composite and fiberglass window options)
  • Doors
  • Glass storefronts and curtain walls
  • Commercial renovations (high-rise window replacements, restaurant window replacements and installations, and more)
  • Railings
  • Siding and metal panels

Aeroseal Windows Energy Efficiency

Although the company doesn’t dive into specifics, Aeroseal asks prospective customers to reach out if they’re interested in upgrading commercial windows and doors for improved energy efficiency. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.15

Additionally, Aeroseal is an EPA Lead-Safe certified firm.16

Aeroseal Windows Pros

  • Many years of experience
  • Great industry reputation
  • Low number of customer complaints
  • Manufactures products in-house
  • Offers custom designs

Aeroseal Windows Cons

  • No lifetime warranty
  • Limited service area
  • Not ideal for residential installations

Window Installation Costs & Services

Let’s take a look at the cost of window installation and the types of services you may need for your home.

Window Installation Costs

The national average cost to replace a single window is about $600 but can range from $200 to $1,200. This is due to the fact that window installations are based on a variety of factors specific to your home, such as the size, type of material and number of windows you need to install, as well as the location of your property.

Keep in mind that energy-efficient windows may cost more upfront, but Energy Star predicts 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.17 These savings vary depending on your local climate, energy rates and individual home characteristics.

The cost of your window installation will also vary depending on the type of window material you choose. Wood windows are typically the most expensive, although it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, although they are not shown to be much more efficient.18

We recommend getting free quotes from multiple reputable window installation companies to find an installer that works best for your budget.

Window Installation Services

Generally, there are two types of window installation services: full-frame and pocket installations.

A full-frame installation is a total window replacement. This service involves removing the old window, the sill, and the exterior and interior trim. It also involves additional materials, like insulation and drip edges, which increase the overall cost of the project. Also worth noting: It’s not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation.

A pocket installation involves replacing a window within the existing frame. So, instead of tearing out the whole unit and rebuilding it, the window installer will just slide the replacement window (also called a retrofit or insert window) into the frame.

If you’re not sure which type of window installation service you need, your installer should be able to help you out. Typically, the decision is based on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

How We Chose the Best Window Installers

EcoWatch reviews differ from most websites, as we’re examining these companies through a sustainability lens. We’ve reviewed the best window installers primarily based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows have been shown to lower energy bills by hundreds of dollars.

Along with energy efficiency, our rating methodology is based on the following factors:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve a wide variety of states and cities so you can find a quality window installation company near you.

Quality of Services

We’re willing to bet that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company featured on this list to ensure its technicians are well-qualified and that the company has received tons of positive customer feedback to vouch for its service.


As with most services, cheap window installers are not going to provide the most quality service, so this one is a give-and-take. Still, we want to make sure we’re highlighting window installation companies that offer a wide range of price and financing options so they’re accessible to most homeowners. Still, some companies on this list may be more expensive because they’ve got a reputation for high-quality services and products to back up their pricing. 


As discussed, windows are a sizable investment, so you’ll want to make sure that investment is well protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Customer Satisfaction

Another self-explanatory yet super important review factor is customer feedback. If the majority of customers don’t have nice things to say about their experience with a certain window installation company, you won’t see it featured on EcoWatch.

Years of Experience

Last but not least, we like to see companies that have a proven track record in the industry. 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.

FAQ: Best Window Installation Companies

When should I use a window installation company?

Unless you have home repair skills and all of the necessary tools to replace your own windows, we recommend hiring the pros. The process of installing windows is complex and can take anywhere from four to six hours for a single window. We know it can be tempting to want to do it yourself to save money, but hiring a window installation company is a faster, more efficient and much safer alternative. 

What are the most common types of windows?

The most common types of windows are fixed picture, single-hung, double-hung, casement, sliding, skylight and storm windows.

How much does window installation cost?

The national average cost to replace a single window is about $600 but can range between $200 to $1,200 based on several factors. The price of a single window installation or replacement is usually dependent on the size, type and material of the window, as well as the location of your property. 

Keep in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills. We recommend getting free quotes from multiple window installation companies to find an installer that works best for your budget.

What window type is the most energy-efficient?

Fixed picture windows are the most energy-efficient because you can’t open them, and therefore are unable to break their airtight seal. Hinged windows are also energy efficient because, when they’re closed, the single sash presses firmly against the frame, as opposed to sliding windows that have two sashes and a slight overlap.

To be sure you’re getting the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — that means they’re certified energy-efficient by the U.S. Department of Energy.

How often do you need to replace windows?

As a basic rule of thumb, you should replace your windows every 15 to 20 years. But if your windows are becoming difficult to open or close or showing signs of leaks or damage, you should think about replacing them sooner.

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