4.5 
320 *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 (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."
+28
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
"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!!"
+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 1994
Free estimates
Customers say: Quality work
"Egress window installation was perfect."
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."
Serving Longmont, CO and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"Great job. They came when they said they would. They did a nice job on the windows. They were efficient and came in at the agreed upon amount. This was a good savings over others who estimated the job."
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."
+10
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."
+68
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