20 Best Window Companies in Westport, NC (2023 Reviews)

When you need to upgrade your windows, our reviews of the top window installation companies can help you find the right provider for you.

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

A guide on the top window installation companies in Westport may not seem like the most riveting article on EcoWatch, but trust us, windows impact your life more than you might think. According to the Department of Energy, heat or cool air lost through old or damaged windows could make up 25-30% of household energy climate control use.

Replacement windows improve the insulation in your home, not only making you more comfortable during extreme temperatures, but also saving you money and helping the environment.

Unlike other review sites, EcoWatch ranks window replacement companies on energy efficiency while also taking into consideration cost, customer satisfaction and service area.

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 Westport

The EcoWatch team assessed dozens of installers across the country to find the top window installation companies for our readers. The installers in this article scored the best in our review categories, such as energy-efficient offerings, customer service, availability, price, local expertise 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 Westport. Window World has around 27 years of industry experience, and it currently provides services to 200 locations nationwide. Many positive reviews on customer review websites back the company's reputation.

Window World may be the company for you if you're looking for one 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

There are a wide range of window types that Window World offers, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Westport?

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. If you’d like more accurate 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 Westport. Andersen has around 27 years of industry experience, and it currently provides services to nearly every state except Mississippi and West Virginia. Many positive reviews on customer review websites back the company's reputation.

Andersen may be the company for you if you're looking for 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

There are a wide range of window types that Renewal by Andersen offers, some of which are Energy Star products. 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 Westport?

Andersen doesn’t have any prices listed 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 information, you can get a quote on the company’s website.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Many years of experience
  • Pros icon Great industry reputation
  • Pros icon Low number of customer complaints
  • Pros icon Manufactures products in-house
  • Pros icon Custom Designs
Cons:
  • Pros icon No lifetime warranty
  • Pros icon Not ideal for residential installations

Aeroseal Windows provides the best window installation for businesses in Westport. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. This window installation company has been in business since 1999 and currently serves 13 states and Washington D.C. Hundreds of positive reviews on customer review websites back the company's reputation.

Aeroseal may be the company for you if you want one that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

Aeroseal Windows caters to eco-conscious consumers by providing energy-efficient window offerings. 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.

How much does Aeroseal Windows cost in Westport?

Pricing details are not available on Aeroseal’s website since the cost of window installment depends on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. You can inquire about a free quote on its website for more information about the cost.

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 Westport. 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.

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

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct is an Energy Star partner and has a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Universal representative when inquiring about services.

How much does Universal Windows Direct cost in Westport?

Universal does not mention prices 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. For more detailed information on the cost, you can receive a quote from the company.

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 Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation provides the best residential windows in Westport. Window Nation has around 16 years of industry experience, and it currently provides services to residents within 75 miles of its showrooms, which are in 13 states. Many positive reviews on customer review websites back the company's reputation.

Window Nation may be the company for you if you're looking for 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

There are a wide range of window types that Window Nation offers, some of which are Energy Star products. 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 Westport?

Window Nation doesn’t have any prices listed 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. If you’d like more accurate information, you can get a quote on the company’s website.

We strive to remain unbiased and transparent by including pros and cons for each company. Additionally, any partnerships do not influence our reviews.

More Window Companies in Westport

Renewal by Andersen Window Replacement

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

Services Offered

  • Service icon Fast Delivery
  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement

Website: https://charlottereplacementwindows.com/
Address: 4749 West Blvd, Charlotte, NC 28208
Phone: (704) 251-2642

Champion Replacement Windows of Charlotte

Charlotte, NC
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

Website: https://www.championwindow.com/Charlotte/
Address: 9100 Perimeter Woods Dr, Charlotte, NC 28216
Phone: (704) 322-3247

Window World Catawba Valley

Hickory, NC
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

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

Website: https://www.windowworldcatawbavalley.com/
Address: 950 Tate Blvd SE Suite 105, Hickory, NC 28602
Phone: (828) 324-0307

Window Nation

Charlotte, NC
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: https://www.windownation.com/window-replacement-charlotte/
Address: 5900 Northwoods Business Pkwy suite m, Charlotte, NC 28269
Phone: (704) 816-1720

My Windows and Doors LLC

6367 NC-150, NC
4.2
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

Website: https://mywindowsanddoorsllc.com/
Address: 6367 NC Hwy 150 E, 6367 NC-150, Sherrills Ford, NC 28673
Phone: (704) 249-2232

Energy Masters Direct LLC

Mooresville, NC
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

Website: http://www.energymastersdirect.com/
Address: 2692 Charlotte Hwy, Mooresville, NC 28117
Phone: (980) 444-0035

Modern Glass of Lake Norman

Denver, NC
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

Website: http://modernglassoflkn.com/
Address: 4329 NC-16 Business, Denver, NC 28037
Phone: (704) 206-9999

World of Windows of The Carolinas

Perimeter Woods Dr, NC
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

Website: https://www.windowscharlotte.com/
Address: 9100 A, Perimeter Woods Dr, Charlotte, NC 28216
Phone: (704) 921-9898

Legacy

Charlotte, NC
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

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

Website: https://chooselegacy.com/
Address: 9013 Perimeter Woods Dr Suite E, Charlotte, NC 28216
Phone: (704) 645-7077

Pella Windows & Doors of Charlotte

Charlotte, NC
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.pellabranch.com/north-carolina/showrooms/charlotte/
Address: 7132 Brice Knoll Ln, Charlotte, NC 28269
Phone: (704) 347-1301

Statesville Glass & Shower Door

Statesville, NC
4.2
★★★★★
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

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

Website: https://statesvilleglass.com/
Address: 1539 Shelton Ave, Statesville, NC 28677
Phone: (704) 873-3523

Forever Windows

Statesville, NC
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

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

Website: https://www.foreverwindows.com/
Address: 1120 Barkley Rd N, Statesville, NC 28677
Phone: (980) 434-5347

All Seasons Window & Door Co.

Charlotte, NC
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: https://allseasonswindow.com/
Address: 2821 Rosemont St, Charlotte, NC 28208
Phone: (704) 343-8438

America's Choice Contractors

Gastonia, NC
3.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: http://americaschoicecontractors.com/about-us/
Address: 306 Rhyne-Oakland Rd, Gastonia, NC 28054
Phone: (704) 777-5747

Homefix Roofing and Window Installation of Charlotte

Charlotte, NC
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

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

Website: https://homefixcustomremodeling.com/charlotte-nc/
Address: 3029 Horseshoe Ln Suite B, Charlotte, NC 28208
Phone: (704) 286-0664

Windows Doors & More Warehouse

Statesville, NC
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

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

Website: https://www.wdmwarehouse.com/
Address: 1624 Northside Dr, Statesville, NC 28625
Phone: (704) 872-6277

Duke Vinyl Windows

Charlotte, NC
3.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

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

Website: http://dukevinylwindowsnc.com/
Address: 304 W 32nd St, Charlotte, NC 28206
Phone: (980) 355-0756

Belk Builders

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

Services Offered

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

Website: http://belkcustombuilders.com/
Address: 401 Hawthorne Ln #110, Charlotte, NC 28204
Phone: (704) 400-4710

The Window Source of the Carolinas

Charlotte, NC
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: http://windowsourcecarolinas.com/
Address: 4111 Rose Lake Dr G, Charlotte, NC 28217
Phone: (704) 612-4156

Apex Energy Solutions

Charlotte, NC
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Stained Glass
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs

Website: https://www.apexenergygroup.com/contact/
Address: 2923 S Tryon St STE 240, Charlotte, NC 28203
Phone: (980) 939-1692
Westport Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Westport, NC 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 Westport 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 switching out your windows could help you:

  • Save on power bills: Once you install energy-efficient windows, you can see a reduction in your bills by about 12% because you'll use less energy to heat or cool your house.
  • 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.
  • Decrease your carbon footprint: By using less energy once switching to energy-efficient windows, you'll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Protect your investment: If your home is on the older side, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help raise the value of your property if you decide to sell.

Estimated Cost of Window Replacement in Westport

Each window replacement company provides various services and has different price points depending on a few factors.

How Much Do New Windows Cost?

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

Whether or not you opt for energy-efficient windows is another factor that will determine the cost. These will usually cost more than other windows, but on the other hand, you can save about $333 a year on your energy bills in Westport.

How much your window installation costs will also vary depending on the type of window material you choose for the frames. Wood windows are typically the most expensive, but it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.

What Services do Window Installers Offer?

The first step when considering a window installation is to figure out whether you need a full-frame or pocket installation.

Full-frame installations are usually done when you want to change the style of your windows or your window has significant rot. With this service, your installers will replace the entire window, including the sill, frame and trim. Pocket installations are simpler and won't cost as much because they entail simply replacing the window within its existing frame. But if the frame has any damage, you may need a full-frame installation instead.

Your window installation company can help you figure out which type of installation you need.

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 Westport

The EcoWatch Reviews team differs from other reviewers because we look at these companies through a sustainability lens. Along with energy efficiency, we assessed each installer and assigned rankings using the following methodology:

Service Area

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

Work Quality

When selecting new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the brand you choose. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

Customer feedback is another super important review factor. If most customers don't have nice things to say about their experience with a certain installer, you won't see it featured on EcoWatch.

Cost

Cheaper windows don't necessarily mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing providers' prices, we gave higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important. For that reason, window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

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

Westport, NC Window Replacement FAQs

How much does a window install cost?

The national average cost of replacing a single window is about $600 but can range from $200 to $1,200, based on a variety of factors. The price is typically 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 upfront but can save you a decent amount of money a year in energy bills.

Which type of window is the best?

A window's energy efficiency is affected by a number of factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are often the most energy-efficient since they are certified by the U.S. Department of Energy.

When do I need to use a window installation company?

Unless you have experience with home improvement projects and have all of the necessary tools to replace your own windows, we recommend hiring a professional installer. The window installation process is complicated and can take anywhere from four to six hours for a single window. Although it's tempting to try to save some money by doing it yourself, hiring a company is a faster, more efficient and much safer alternative.

When is the best time of year to replace windows?

Replacement windows can be installed any time of the year, but warmer weather is typically better. No matter when you install them, the contractors will take steps to ensure that too much hot or cold air doesn't get into the home, so the temperature outside doesn't necessarily matter that much. What's most important is that the weather should be dry.

Should I replace my windows all at the same time?

If your windows are more than 20 years old, it's probably time to replace all of them. By that point, they are typically less efficient, leakier and/or more damaged than new windows. Doing your windows all at once will involve less paperwork and less stress.

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