4.5 
321 *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
Serving Longmont, CO and surrounding areas
Approved
In business since 1997
Free estimates
Warranties offered
"Centennial Window Films did a great job, highly recommend!!"
+19
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!!"
+20
Serving Longmont, CO and surrounding areas
Approved
Super Service Award Winner
In business since 1995
Free estimates
Credit card accepted
"Both Jerry and Cassandra were professional, friendly and efficient. My oversized picture window looks great and my room already feels cooler and easier on the eyes. Next day install, fair pricing and excellent service - a winning combination. I highly recommend."
+15
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."
Serving Longmont, CO and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"Very friendly. Did quality window washing. Wiped down the frames."
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."
Serving Longmont, CO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1992
Free estimates
Warranties offered
"Excellent workmanship and products I have had three installations with Power in the past two years. I first used them for a new roof and gutters. The workers were all knowledgeable in their area of work. Clean up was good although some nails kept showing up over time. Next I had the 2nd floor windows and some 1st floor windows replaced, 9 in total. Installation went well and they cleaned up beautifully afterwards. I love the windows! They are a beautiful and energy efficient product. Lastly, I recently had a bay window replaced in my kitchen with the same type window. The workers ere all friendly and explained what would be done. The area was draped with plastic to cut down on dust. Clean up was excellent inside and outside! The window is beautiful and the framing on the outside of the window matches the other windows and the small roof above the bay window was replaced with the same roofing as the rest of the house. I would choose them again for any future projects."
+24
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."
+68
Serving Longmont, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Customers say: Terrific value
"Colorado Egress was incredibly easy to work with. Very thorough and they do excellent work. Highly recommend for egress windows ."
+10
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"
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