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
"They were able to find clips to replace my old window clips. And the price was worth having them install."
+20
Serving Longmont, CO and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"The windows are the cleanest they have ever been. Found our new window washing service!"
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
"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."
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
Serving Longmont, CO and surrounding areas
Approved
In business since 1994
Free estimates
Customers say: Quality work
"Tom responded quickly and gave me an estimate on installing two small windows on each side of my fireplace. He said it would take a month for the order and that's exactly what it was. My schedule didn't allow him to come out during the week so he came on a Saturday morning to install windows. He did a great job, cleaned up inside and out and the windows look great. I may consider installing an egress window and I would definitely use Tom's company."
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
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
In business since 1999
Free estimates
Small jobs welcome
"They were prompt, professional and did a great job. My windows sparkle"
From average costs to expert advice, get all the answers you need to get your job done.
Discover the energy-efficient window costs. Learn about installation prices, cost factors, and tips to save money on your window upgrade.
Bigger windows mean more natural light in your space and better views of the outdoors. Learn about the cost to enlarge windows and what affects your total.
Steel windows are a durable, modern option for your home. Learn how much steel windows cost and see if they’re a good fit for your home.
Buying windows can be complex. There are a ton of things to consider before buying to ensure you’re making the right choice for your home. Explore more here.
Understanding standard window sizes is easy once you get the hang of it. Here's how to order windows just like the pros.
Our guide walks you through all the questions you should ask a window replacement contractor before hiring them to replace the windows in your home.
