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TRUSTED BY LONGMONT, CO HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon276
    Verified window cleaning services reviews

Verified Reviews for Window Cleaning pros in Longmont, CO

*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

Find Window cleaners in Longmont

Avatar for Let There Be Light
Let There Be Light
4.8(
129
)
Window CleaningWindow Cleaning - For Business

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"
Response time5 hrs
62 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for JM Window Cleaning
JM Window Cleaning
4.9(
59
)
Window CleaningWindow Cleaning - For Business

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."
I house in Parker
I house in Parker
I house in Parker
I house in Parker
I house in Parker

+68

Response time4 hrs
Response rate99%
22 neighbors recently requested a quote
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Avatar for JHJ Window Cleaning, LLC
JHJ Window Cleaning, LLC
4.9(
14
)
Window CleaningWindow Cleaning - For Business

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."
Crazy Mountain
Crazy Mountain Brewery
Garage Door Window
Garage Door Window
Crazy Mountain Brewery

+6

Response time5 hrs
Recommended by92%of homeowners
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Avatar for 20/20 Windows & Solar Cleaning Inc.
20/20 Windows & Solar Cleaning Inc.
5.0(
16
)
Window CleaningWindow Cleaning - For Business

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"
Response time6 hrs
Response rate100%
3 neighbors recently requested a quote
Request Quote
Avatar for Abluent Window Cleaning, LLC
Abluent Window Cleaning, LLC
4.3(
34
)
Window Cleaning - For Business

Serving Longmont, CO and surrounding areas

Approved

In business since 2010

Free estimates

Customers say: True professional

"Tyler did a fantastic job on all of our windows! They look so much better than they ever have before! We would recommend him to anyone who would like crystal clear windows!"
Tyler on a ladder. Abluent, Ltd. window cleaning
Tyler cleaning windows for Abluent, Ltd.
Inside Mountain Home Window Cleaning, Great View!
Commercial Store Front Window Cleaning
Reflections on a cleaned window

+13

Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Spyglass Window Clean LLC
Spyglass Window Clean LLC
5.0(
5
)
Window CleaningWindow Cleaning - For Business

Serving Longmont, CO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Joe was timely & efficient. My windows & screens looked beautiful when he was done. He was very meticulous & even cleaned the window tracks."
Front Entry
Side View
Side with patio and Garage
Response time5 hrs
Recommended by100%of homeowners
Request Quote
Avatar for Shine of Boulder
Shine of Boulder
4.8(
17
)
Window CleaningWindow Cleaning - For Business

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."
Interior Window Cleaning
House Before
House Before
House Before
House After

+1

Response time1 day
Response rate99%
41 neighbors recently requested a quote
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Avatar for Summit View Window Cleaning
Summit View Window Cleaning
5.0(
8
)
Window CleaningWindow Cleaning - For Business

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!"
Break Area Glass
Conference Glass
Break Area
Office Glass
Office Glass

+38

Response time1 day
Request Quote
Avatar for Brightside Window Cleaning LLC
Brightside Window Cleaning LLC
5.0(
5
)
Window Cleaning

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."
Exterior Window Cleaning
Exterior Window Cleaning
Complete Window Cleaning
Complete Window Cleaning
Complete Window Cleaning

+6

16 neighbors recently requested a quote
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...
Showing 1-10 of 244
Window Cleaning questions, answered by experts

Professional window cleaners typically use either a white vinegar solution or a commercial hard water stain remover to clean hard water stains on windows. A common vinegar solution for this purpose consists of one cup of white vinegar mixed with a gallon of distilled or bottled water. The pro will spray the mixture and lightly scrub the window with a scrubby pad before cleaning with a standard cleaning solution. Alternatively, they may use a commercially available hard water stain remover and a scrubby pad, followed by a complete cleaning.

The most likely cause of smearing or streaking after cleaning your windows is residue left on the glass from the cleaner you’re using. Consider diluting the solution and cleaning them again, or use old newspaper to dry the windows after cleaning, as this will soak up any residual material. Additionally, aim to clean your windows on a cool, cloudy day, as cleaners will dry more quickly on the glass if it’s hot and sunny, promoting streaking.

Do not mix bleach with vinegar, ammonia, acidic liquids, or other cleaners or detergents as toxic fumes result from the chemical reaction. Mix bleach only with water to avoid dangerous chemical reactions. Even mixed with water to dilute it, bleach can still be harmful to your skin, eyes, and lungs.

Because the built-in blinds are encased in glass, they should not get dusty. You might, however, find that your door’s window panes get dirty. If that is the case and you wish to clean your patio door’s glass, first remove any loose debris with a small vacuum or brush. Next, fill a bucket with warm water and some mild dish soap. Dip a clean rag into the bucket and wet the glass on your patio door. Dry the glass with a clean microfiber cloth.

Cleaning services typically offer a range of options. Some of the most common cleaning tasks include:

  • Windows: $4–$10 per window

  • Refrigerator cleaning: $10–$40

  • Carpet cleaning: $75–$200

  • Baseboard cleaning: $25–$75

  • Laundry: $5–$20 per load

  • Cabinets: $20–$50

  • Polishing or waxing floors: $25–$50

  • Dusting: $10–$30

  • Oven cleaning: $20–$40

The Longmont, CO homeowners’ guide to window cleaning services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles