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
"WILL BE HAPPY TO USE THEM AGAIN. VERY PROFESSIONAL, FAST, FRIENDLY AND BEAUTIFUL WORK."
+6
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"
Serving Longmont, CO and surrounding areas
Approved
In business since 2010
Free estimates
Customers say: True professional
"The best customer service I've received from a window cleaner. Great job!"
+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 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
Credit card accepted
"This was extremely excellent service. They cleaned very dirty windows and screens beautifully."
+1
Serving Longmont, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Small jobs welcome
"Phil and Seth came over to my house to do some window cleaning. It was my first experience with professional window cleaners, and I must say they did an amazing job! I appreciate their attention to detail and also providing professional service from start to finish. I will definitely be calling back for more services!"
+38
Serving Longmont, CO and surrounding areas
Approved
Free estimates
Offers commercial services
"Showed up right on time and got to work cleaning windows. Windows honestly look incredible after. Affordable fair price, very kind and easy to talk to staff, completely in a timely manner. Louie Owen did an outstanding job. Definitely going to call him again in the future."
+6
From average costs to expert advice, get all the answers you need to get your job done.
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