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TRUSTED BY LONGMONT, CO HOMEOWNERS

  • 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
28 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%
44 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
)
Door or Window Screens - Install or RepairWindow Cleaning

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%
10 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
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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%
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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Showing 1-10 of 702
Windows FAQs, answered by experts

The lifespan of smart windows or smart glass can range from 10 to 50 years, depending on the specific type, brand, and usage. When activated, smart glass is rated to last for about 100,000 hours. Since the windows are not typically on 24/7, this can translate to a lifespan of 20 years or more. Smart window film, a related product, generally has a shorter lifespan of around 10 years.

Yes, professional window cleaning is worth the investment. Regular deep cleanings help keep your windows looking new, extend their lifespan, and boost your home's curb appeal. By removing dirt, dust, and other debris, you can reduce the risk of damage and accelerated wear to window frames and components. It also improves your home’s energy efficiency by keeping insulation and weatherstripping in good working order, potentially lowering your energy bills. Furthermore, annual or bi-annual cleanings can help identify problems like leaks or cracks early, before they escalate into expensive water damage. You can often recuperate the cost of cleaning through energy savings and by avoiding premature window replacement.

DIY is possible with the proper tools. Professional installation ensures a proper seal and energy efficiency.

Yes, with modifications or the use of adapter kits for tricky placements.

Sometimes, you can buy windows directly from the manufacturer, and it may be cheaper than buying through a third party or wholesaler. Manufacturers may also offer more options, including custom shapes and features, or better warranties if you purchase through them directly. 

However, some companies limit the ability to buy from them, especially if you need standard pre-fabricated sizes, so don’t expect this service from every manufacturer.

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.

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