27 Best Window Replacement Companies in Longmont, CO (Jan 2023)
Window Companies Near Me

If you're looking to upgrade to new windows, our guide to the best window installation companies can help.

We analyzed all the top window installers in Longmont and selected the top 27 based on:

  • Customer reviews
  • Window replacement expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated January 12, 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 best window installation companies in Longmont may not seem like the most interesting article on the EcoWatch site, but trust us, windows impact your life more than you might think. During the winter months, the last thing you want is your heat to leak out of your outdated windows.

Replacement windows improve your home's insulation, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.

Efficient windows are especially important in Longmont, where the temperature varies throughout the year. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $371 a year.

Best Affordability

Window World

★★★★★
4.5

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

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Great industry reputation
  • Member of US Green Building Council
  • More expensive than competition

Best Warranty

Universal Windows Direct

★★★★★
4

  • Manufactures products in-house
  • Wide variety of products and services
  • Makes charitable contributions
  • Quality of service will depend on your area

Best Window Replacement Companies in Longmont

The EcoWatch Reviews team examined dozens of installers across the country to find the top window replacement companies for our readers. The installers we've reviewed in this article scored best in our categories: energy-efficient offerings, price, customer service, availability 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 Lifetime warranty
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in Longmont. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows business, and it has become one of the most reputable companies in the business. Its reputation is backed by a considerable amount of positive reviews on customer review websites.

You may want to consider going with Window World if you're interested in 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

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

How much does Window World cost in Longmont?

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

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 Great industry reputation
  • Pros icon Member of US Green Building Council
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen offers the best availability in Longmont. Andersen has been in the window industry for about 27 years. Hundreds of positive reviews on customer review websites back the provider's reputation.

You may want to consider choosing Andersen 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.

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 ask your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Longmont?

Andersen does not detail 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 information, you can receive 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 Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Makes charitable contributions
Cons:
  • Pros icon Quality of service will depend on your area

Universal Windows Direct has the best warranty in Longmont. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This window installation company has been operating since 2002 and currently provides services to 27 states nationwide.

It has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

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. Not all of Universal's offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Universal Windows Direct cost in Longmont?

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. The best way to get more accurate information is to request a free quote from the company.

We aim to stay unbiased and transparent by mentioning pros and cons for each installer. Additionally, any partnerships do not influence our reviews.

More Window Replacement Companies in Longmont

The Glass Guru

Arvada, CO
5
★★★★★
  • Pros icon Reliable Service
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Appointment Windows
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.theglassguru.com/denver-west-co/
Address: 6618 Wadsworth Blvd, Arvada, CO 80003
Phone: (720) 782-5934

Storm Guard North Metro Denver

Brighton, CO
5
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Good Customer Service
  • Pros icon Free Quotes
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • 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 Stained Glass

Website: https://www.stormguardrc.com/co/denver-north-metro/
Address: 8495 County Rd 2, Brighton, CO 80603
Phone: (303) 223-5719

Window World of Denver

Denver, CO
4.3
★★★★★
  • Pros icon Locally Recognized for Quality
  • Pros icon Good Customer Service
  • Pros icon Reliable Service
  • Pros icon Educational Website

Services Offered

  • 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.windowworldcolorado.com/
Address: 480 E 76th Ave Bldg 5E, Denver, CO 80229
Phone: (303) 574-9594

Commercial Storefront Glass Denver

1555 Larimer St, CO
4.3
★★★★★
  • Pros icon Locally Recognized for Quality
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: http://commercialstorefrontglassdenver.com/
Address: space CR711, 1555 Larimer St, Denver, CO 80202
Phone: (720) 543-7870

Northern Lights Exteriors

Fort Lupton, CO
4.3
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service
  • Pros icon Award-Winning
  • Pros icon Timely Service

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: https://northernlightsexteriors.com/
Address: 11375 Co Rd 23, Fort Lupton, CO 80621
Phone: (303) 776-5263

True View Windows & Glass

Westminster, CO
4.2
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Timely Service

Services Offered

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

Website: https://www.trueviewglass.com/
Address: 3200 W 71st Ave Ste 20, Westminster, CO 80030
Phone: (720) 431-8783

UNI Design

Greeley, CO
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Consistent Workmanship
  • Pros icon Educational Website
  • Pros icon No-fee Quotes

Services Offered

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

Website: https://www.uni-design.com/
Address: Greeley, CO
Phone: (970) 356-1398

Hillcrest Glass

Longmont, CO
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Consistent Workmanship
  • Pros icon Free Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Heavy Glass
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.hillcrest-glass.com/
Address: 504 4th Ave, Longmont, CO 80501
Phone: (303) 776-9511

Five Seasons Windows and Doors

Denver, CO
4.0
★★★★★
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service
  • Pros icon Arrives on Time

Services Offered

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

Website: https://fiveseasonswindows.com/
Address: 1040 S Gaylord St Ste. 60, Denver, CO 80209
Phone: (720) 740-1391

Alpen High Performance Products

Louisville, CO
4.0
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Reliable Service
  • Pros icon Educational Website

Services Offered

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

Website: http://thinkalpen.com/
Address: 335-A Centennial Pkwy, Louisville, CO 80027
Phone: (800) 882-4466

Moffat Glass

Greeley, CO
3.9
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Arrives on Time
  • Pros icon Good Customer Service

Services Offered

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

Website: http://moffatglass.com/
Address: 710 12th St, Greeley, CO 80631
Phone: (970) 352-6625

Colorado Rockies Windows and Doors

Golden, CO
3.9
★★★★★
  • Pros icon Reliable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Arrives on Time

Services Offered

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

Website: http://www.coloradorockieswindowsanddoors.com/
Address: 941 Sleepy Hollow Rd, Golden, CO 80401
Phone: (720) 626-0900

Ameritech Windows

Boulder, CO
3.9
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service
  • Pros icon Locally Recognized for Quality

Services Offered

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

Website: https://www.ameritechwindows.com/
Address: 1310 College Ave #400, Boulder, CO 80302
Phone: (303) 444-1998

303 WINDOWS

Denver, CO
3.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon Dependable Service

Services Offered

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

Website: https://www.303windows.com/
Address: 2375 S Downing St, Denver, CO 80210
Phone: 303 WINDOWS

Sky Manor Roofing & Exteriors

Thornton, CO
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Consistent Workmanship
  • Pros icon Free Quotes

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

Website: http://www.skymanorroofing.com/
Address: 13591 High Cir, Thornton, CO 80241
Phone: (303) 876-0055

Mountain View Window & Door

Denver, CO
3.8
★★★★★
  • Pros icon Free Quotes
  • Pros icon Award-Winning
  • Pros icon Dependable Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: http://www.mtnview.us/
Address: 815 S Jason St, Denver, CO 80223
Phone: (303) 649-2217

Colorado Classic Exteriors: Windows, Siding, Doors, Pergolas

Arvada, CO
3.7
★★★★★
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Educational Website

Services Offered

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

Website: http://coloradoclassicexteriors.com/
Address: 7985 Vance Dr #202, Arvada, CO 80003
Phone: (720) 457-5536

Lifetime Windows & Siding

Denver, CO
3.7
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Consistent Workmanship
  • Pros icon Award-Winning
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://www.lifetimewindowscolorado.com/
Address: 2330 Broadway St Ste 110, Denver, CO 80205
Phone: (303) 536-8809

Slade Glass Co.

Longmont, CO
3.7
★★★★★
  • Pros icon Gives to charity
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing
  • 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 Sliding Glass

Website: http://www.sladeglass.com/
Address: 504 5th Ave, Longmont, CO 80501
Phone: (303) 776-3400

Absolute Glass & Windows LLC

Aurora, CO
3.7
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Consistent Workmanship
  • Pros icon Free Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: https://www.absoluteglassandwindows.com/
Address: 401 Laredo St C Unit C, Aurora, CO 80011
Phone: (303) 848-4094

Slade Glass Co.

Boulder, CO
3.7
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Good Customer Service
  • Pros icon Supports Charities
  • Pros icon No-Hassle Pricing

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 Sliding Glass

Website: http://www.sladeglass.com/
Address: 1770 38th St, Boulder, CO 80301
Phone: (303) 442-3662

Window Replacement Denver

Denver, CO
3.7
★★★★★
  • Pros icon Free Quotes
  • Pros icon Consistent Workmanship
  • Pros icon Award-Winning
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://windowreplacementdenver.com/
Address: 1480 Wolff St #116, Denver, CO 80204
Phone: (720) 701-2202

Renewal by Andersen of Colorado Front Range

Longmont, CO
3.6
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Good Customer Service
  • Pros icon Reliable Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://fortcollinswindow.com/
Address: 14330 Longs Peak Ct, Longmont, CO 80504
Phone: (970) 305-5060

Rocky Mountain Glass & Shower LLC

Ault, CO
3.6
★★★★★
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Educational Website

Services Offered

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

Website: http://www.rmglass.com/
Address: 116 N 2nd Ave, Ault, CO 80610
Phone: (970) 347-9710

Colorado Window Source

Denver, CO
3.6
★★★★★
  • Pros icon Timely Service
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service
  • Pros icon Dependable Service

Services Offered

  • Service icon Custom Windows
  • Service icon Sliding Glass
  • Service icon Business Windows
  • Service icon Double-Hung

Website: https://www.coloradowindowsource.com/
Address: 1390 W Evans Ave Unit D, Denver, CO 80223
Phone: (720) 727-6031

Window Depot USA of Northern Colorado

Loveland, CO
3.6
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes
  • Pros icon Locally Recognized for Quality
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://windowdepotnoco.com/
Address: 3612 W Eisenhower Blvd unit a, Loveland, CO 80537
Phone: (970) 669-3305

Parilla Window Cleaning and Mobile Screen Repair

Wheat Ridge, CO
3.6
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service
  • Pros icon Reliable Appointment Windows
  • Pros icon Free Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://www.parillawindowcleaning.com/
Address: 8252 W 44th Ave, Wheat Ridge, CO 80033
Phone: (720) 722-2578

How Installing Energy-Efficient Windows in Longmont Saves You Money

Switching to energy-efficient windows can improve the comfort of your home and help you save on energy bills. Here are more details about how switching out your windows could help you:

  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
  • Save money on energy bills: According to the Department of Energy, heat gained or lost through windows makes up about 25-30% of household energy use. Replacing your windows with energy-efficient models can help decrease how much energy is used in your home, therefore saving you about 12% more on your bills.
  • Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its real estate value, particularly if you have an older home.
  • Decrease your carbon footprint: In Longmont, you can reduce your indirect greenhouse gas emissions by about 460 pounds per year after you switch to energy-efficient windows.

Estimated Cost of Window Replacement in Longmont

Windows come in varying shapes, styles and purposes, so costs and services will vary greatly depending on your project. Below, we describe the average cost and services that you'll find from window installation companies.

How Much Do New Windows Cost?

On average, homeowners in Longmont can expect that most window installations will range from $250 to $1,200, with the most common installations sitting at about $600. How much it will cost varies depending on several factors, including the location of your home, size, type, material, number of windows and more.

With windows, efficiency is one of the most important factors for most homeowners. Efficient windows may cost more initially, but by increasing the efficiency of your home — especially during the summer and winter — they can give you many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Longmont homeowners $371+ each year after replacing single-pane windows.

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

What Services do Window Installers Offer?

The first question to ask yourself when planning on installing new windows is: Do you need a full-frame installation or a pocket installation?

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant deterioration. Full-frame installations require more time and labor and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window while leaving the old frame. Pocket installations are simpler and will be less expensive, but you can't do this kind of installment if you have any pre-existing rot or water damage.

If you're still debating which type of installation you should get, you can consult with your installer and get their recommendation. The decision mostly is influenced by the age of your window frames and if there's any damage.

Best Affordability

Window World

★★★★★
4.5

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

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Great industry reputation
  • Member of US Green Building Council
  • More expensive than competition

Best Warranty

Universal Windows Direct

★★★★★
4

  • Manufactures products in-house
  • Wide variety of products and services
  • Makes charitable contributions
  • Quality of service will depend on your area

How We Choose the Best Window Installers in Longmont

EcoWatch reviews are different from other reviews, as we assess these companies through a sustainability lens. We have evaluated the best window replacement companies in Longmont mainly based on their energy efficient offerings, as it's the most sustainable option and the best one for homeowners. Energy-efficient windows can lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Because this is a guide for Longmont, we gave more points to companies that serve the city. There are certainly other reputable providers that didn't make the list because they wouldn't be able to serve homeowners in Longmont.

Work Quality

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

Customer Reviews

Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have positive feedback about their experience with a certain company, it won't be featured on EcoWatch.

Cost

Cheaper windows certainly don't mean better windows, but we know many of our readers try 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 with lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have a proven track record in the industry. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Longmont, CO Window Replacement FAQs

How much should window installation cost?

The average cost of installing a single window ranges between $450 and $650. There are several factors that influence the cost, such as how energy-efficient the windows are, styles and sizes of windows, the number of windows, local labor costs, the materials used in designing the windows and your property's location.

What are the kinds of windows?

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

Can I install my own windows?

Although you can install your own windows, doing so is time-consuming and requires a lot of experience with home improvement projects. Using a window replacement company can help ensure that the job is done properly and that you can avoid spending the time and effort of doing it yourself.

How long does window installation take?

Each window takes about 30 minutes to install depending on the kind of window. However, the window installation can take two days or more if you have a lot of windows that have to be installed.

Should I replace all my windows at once?

If you're upgrading your windows because of energy-efficiency, replacing all of your windows together is the only way to gain that benefit. On the other hand, if you have only a few windows that are damaged or drafty, you can replace just those.

Follow us