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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon339
    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

Top-Rated Window pros in Longmont - Updated Nov 2026

Avatar for Centennial Window Films
Centennial Window Films
4.8(
214
)
Window Tinting - Apply or Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Centennial Window Films did a great job, highly recommend!!"
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
27 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Empire Glass Company
Empire Glass Company
4.9(
129
)
New Windows - 6 +Window Glass - Install or ReplaceNew Windows - 3-5+6 more

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"cott even showed me how to remove and replace the window incase I have problems with other windows in the house knowing that we would have problems hiring to have other windows repaired on our fixed income ver_ nice man. thank you Scott. it very nice to have windows I can open and close again and knowledge of how to fix further issues buy myself if beeded. Thankyou so much for your honesty and help. There was a window that I thought needed repair and he save me money by showing me that one of the windows was working ok. Very honest and snd helpful business"
In glass pet door
Frameless Rain Glass
Frameless Custom
Frameless Custom
Frameless Custom

+20

Response time1 day
Response rate97%
42 neighbors recently requested a quote
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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

"I hired Ben to install security window film on all my windows. Ben was very professional and performed the work in a timely manner. His customer service is top notch. Ben kept me informed on his timing until he arrived and did an outstanding job.. I would recommend Ben/Jammin Films for all your window film needs."
Response time5 hrs
Response rate89%
8 neighbors recently requested a quote
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Avatar for JM Window Cleaning
JM Window Cleaning
4.9(
64
)
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

"Exterior windows were cleaned ... excellent job."
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%
9 neighbors recently requested a quote
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Avatar for Windows Gutters Etc., LLC
Windows Gutters Etc., LLC
4.6(
199
)
Window Cleaning

Serving Longmont, CO and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Ray the owner was on time, worked fast and did a great job. Our house will sell better because of our sparkling windows. He was friendly and even washed the two little windows on our shed for no charge that were not included in the bid.Our bid also included cleaning out our window wells and cleaning those windows. He did an excellent job. His prices are low. He is a veteran and hires veterans in his business. I would definitely recommend this company for windows and gutter cleaning."
Response time1 day
2 neighbors recently requested a quote
Recommended by98%of homeowners
Request Quote
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%
1 neighbors recently requested a quote
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Avatar for 20/20 Windows & Solar Cleaning Inc.
20/20 Windows & Solar Cleaning Inc.
5.0(
17
)
Window CleaningDoor or Window Screens - Install or Repair

Serving Longmont, CO and surrounding areas

Approved

In business since 1999

Free estimates

Small jobs welcome

"They were prompt, professional and did a great job. My windows sparkle"
Response time6 hrs
Response rate100%
5 neighbors recently requested a quote
Request Quote
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Windows FAQs, answered by experts

Yes, it is generally better and more cost-effective to replace all your windows at once. Contractors often lower the per-window labor and material costs for larger projects, saving you money in the long run. Installers may also quote a flat rate for overhead, making multiple small jobs more expensive than one large one.

Replacing all windows simultaneously offers other advantages:

  • Aesthetics and Home Value: It creates a cohesive style and uniform energy efficiency, which is appealing to potential home buyers.

  • Efficiency: The entire replacement process, which can take several weeks, is completed in a single, more efficient project.

However, replacing all windows requires a significant upfront investment. While you can replace just a few windows, experts recommend replacing at least five to eight at a time to avoid high overhead costs. An exception is when a single window is damaged; in that case, it can be replaced on its own.

The cost of window replacement is about $290 per window on average, with a typical price range of $180 to $410. However, costs can be as low as $100 or as high as $780 or more. The total price depends on several factors, including the size, type, brand, and number of windows being replaced. The frame material and glass type also significantly impact the cost.

  • Frame Material Costs (per window):

  • Aluminum: $275

  • Vinyl: $550

  • Wood: $800

  • Composite: $900

  • Fiberglass: $1,250

  • Glass Type: Simple double-glazed windows are cheaper ($3 to $6 per sq. ft.) than stronger tempered glass ($12 to $14 per sq. ft.).

There are many high-quality window companies on the market, although Andersen, Pella, and Marvin continue to be the most popular nationwide. Some brands, like Sunrise and Soft-Lite, are popular regionally but may not be available in all parts of the United States. When comparing brands, look for features like increased energy efficiency, strong and durable materials, and long-lasting and all-encompassing warranties.

Look for stickers at the top or inside of the frame, like in the tracks when the window is open. Some brands also stamp their name onto the frame itself or place it between the panes of glass, although this is less common. If you can’t find the info on the window itself, consider asking your neighbors or HOA.

There are many signs to look out for that tell you it’s time to replace a double-hung window. If the window is drafty and inefficient, you may need a new window to block out air leaks and keep your utility bills from skyrocketing. Other signs that it’s time to replace a window include foggy glass, soft or broken window frames, or window sashes that won’t open or close easily.

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