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TRUSTED BY LONGMONT, CO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon320
    Verified window services reviews

Verified Reviews for Window Service pros in Longmont, CO

*The Angi rating for Window Service companies in Longmont, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.

*The HomeAdvisor rating for Window Service companies in Longmont, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.

Last update on May 20, 2026

Find Window pros in Longmont

Avatar for Centennial Window Films
Centennial Window Films
4.8(
211
)
Window Tinting - Apply or Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Dennis, Did A Great Job. Installing 2 Tinted Windows On Our Car. He Will Be Back. To Install The Tint On Our Deck Door."
deco-stained glass
deco - w/ logo
commercial-interior
Little Debbies Dream ( Aurora ) silver 15 int/ ext
dtc office with deco-white matte

+19

Response time10 hrs
49 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Power Home Remodeling
Power Home Remodeling
4.7(
215
)
New Windows - 6 +New Windows - 3-5New Window - Single+8 more

Serving Longmont, CO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"We had the main windows done by Power Windows in 2021 and now we had them do the windows on our outbuilding and mudroom. The entire process has been great from start to finish. The windows are fantastic, keeps the heat out in the summer and cold out in the winter. The sales(Davis, Jack, and Brad) and work crew(headed by Gus) have been very up front and professional. I highly recommend this company."
Full Home Facelift
Full Home Remodel - Siding, Windows, Door and Gutters
Full Home Facelift
Full Home Remodel - Siding, Windows, Door and Gutters
Full Home Facelift

+28

53 neighbors recently requested a quote
Recommended by75%of homeowners
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Avatar for Empire Glass Company
Empire Glass Company
4.9(
129
)
New Windows - 6 +New Windows - 3-5New Window - Single+6 more

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Great customer service from the start. Work was completed on time and quickly and efficiently! Got quotes for other windows to be replace and will be using them in the future. Highly recommend!!"
In glass pet door
Frameless Rain Glass
Frameless Custom
Frameless Custom
Frameless Custom

+20

Response time1 day
Response rate97%
23 neighbors recently requested a quote
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Sun King Solar Control Solutions, LLC
4.8(
63
)
Window Tinting - Apply or Replace

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Credit card accepted

"Excellent job on the window tinting project. The quality of the work is top- notch, clean precise and professionally done. The tint not only enhanced the look of the home but has reduced the glare and heat, just as I had hoped. Cassandra was respectful of our space and left everything spotless after the job was done. I’d highly recommend to anyone looking to upgrade their home Windows. Outstanding work with a fun personality!!"
Certifications
Commercial 1
Commercial 2
Commercial 3
Residential

+15

Response time1 day
42 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for Jammin Films, LLC
Jammin Films, LLC
5.0(
56
)
Window Tinting - Apply or Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Ben was courteous, personable, very professional and knows his trade., I was impressed with his applications of window tinting my four huge windows here in a timely and CLEAN manner."
Response time5 hrs
Response rate89%
15 neighbors recently requested a quote
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Avatar for Windows Gutters Etc., LLC
Windows Gutters Etc., LLC
4.6(
198
)
Window Cleaning

Serving Longmont, CO and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Very affordable, dependable, and pleasant to deal with. I will be scheduling a window cleaning as well."
Response time1 day
2 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Colorado Egress
Colorado Egress
4.6(
123
)
Egress Window - Install

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Customers say: Terrific value

"The team was great to work with. The window and window well turned out really nice. I will definitely recommend Drew and his team."
Interior trim - typical
Interior trim - typical
Interior trim - typical
Optional European Tiltturn Window
optional In-swing single hung window2

+10

Response time1 day
Response rate86%
2 neighbors recently requested a quote
Request Quote
Avatar for JM Window Cleaning
JM Window Cleaning
4.9(
60
)
Window CleaningDoor or Window Screens - Install or Repair

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"Did a great job cleaning our windows despite thunder, lightening, and hail."
I house in Parker
I house in Parker
I house in Parker
I house in Parker
I house in Parker

+68

Response time4 hrs
Response rate99%
20 neighbors recently requested a quote
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Windows questions, answered by experts

Bay windows are supported by braces and industrial strength cables, often at the top of the window but sometimes at the bottom. The bay window may need buttress supports if installed on the second floor. Wood screws on the interior also hold the bay window in place. Bay windows are heavy and need proper support to prevent sagging and wall damage. You need to ensure that the support system can hold the weight of the window and the roof cab over the window.

Glass block windows are energy-efficient because they are much thicker than traditional glass panes, making them better insulators. They are sealed airtight, which prevents drafts and stops warm or cool air from escaping, helping to save money on heating and cooling bills. Unlike traditional windows that can be opened and closed, sealed glass block windows eliminate the potential for air leaks. For proven efficiency, look for options that are Energy Star rated. The cost for energy-efficient glass block windows is typically around $400 per window, which may be higher than standard windows.

Depending on the window style and your home's layout, you can install replacement windows from either the inside or the outside. Many installations are done from the inside because it allows for better access and weather protection, but some exterior installs are easier for certain types of siding or trim. The key is choosing the approach that gives you the best access to the frame while keeping the existing structure intact.

Yes, but professionals use specialized equipment and cleaning solutions to safely achieve streak-free, long-lasting results.

Options include interior, exterior, and double-pane storm windows. Choose based on needs and preferences.

The Longmont, CO homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles