4.8 
276 *The Angi rating for Window Cleaning 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 Cleaning needs.
*The HomeAdvisor rating for Window Cleaning 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 Cleaning needs.
Last update on May 20, 2026
Serving Longmont, CO and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"Very professional. Best job of window cleaning we have had in Estes Park"
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 2023
Free estimates
Credit card accepted
"Affordable pricing and extremely good work. Our windows sparkle as if they were brand new, maybe even better. I will definitely hire Hazen and JHJ Window Cleaning again."
+6
Serving Longmont, CO and surrounding areas
Approved
In business since 1999
Free estimates
Small jobs welcome
"Cleaner came right at the committed time and finished the job within the estimated time frame. Results look great."
Serving Longmont, CO and surrounding areas
Approved
In business since 2010
Free estimates
Customers say: True professional
"They were responsive and did an EXCELLENT job. Very professional. I would recommend to anyone and will be using them again. Thank you!"
+13
Serving Longmont, CO and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Remember the days when you could trust a contractor to do an amazing job, You didn't need an estimate because you knew they would never rip you off. Their work and attitude were always exceptional. Well, the days of old are back with Spyglass. He is on time, first class, fabulous work and trustworthy. He does our window cleanering, gutters and special projects we need as elderly clients."
Serving Longmont, CO and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"Matt and his hard working team cleaned all our windows, screens, tracks, etc. In pre for a wedding we hosted at our home. They did an outstanding job, we're very conscientious and efficient. They're customized water pH system was interesting and efficient, allowed for streakless drying. Thier cost was reasonable for all the work it took to complete our home (~ 50 panes). Matt and his team were super nice. Several of our neighbors are planning to hire them. I highly recommend Shine for your window cleaning services."
+1
Serving Longmont, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Small jobs welcome
"I really appreciated the time they took to give me a fair estimate for my house windows. They got here on time for my scheduled appointment and got to work! I was really surprised at how dirty my windows were and amazed at how clean they look now. I am very happy with the quality and friendly service Phil and Seth provided. Can not wait for them to come back for my monthly appointments!"
+38
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
In business since 2024
Free estimates
Emergency services offered
"Darian and Travis were quick to deliver great service when I needed an overdue cleaning. Would highly recommend them"
+5
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