4.4 
45 *The Angi rating for Chimney Sweeping companies in Thornton, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Chimney Sweeping needs.
*The HomeAdvisor rating for Chimney Sweeping companies in Thornton, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Chimney Sweeping needs.
Last update on December 26, 2025
Serving Thornton, CO and surrounding areas
Approved
In business since 1982
Free estimates
Emergency services offered
"Using Chimney Sweeps for many years. Excellent service work. Best customer service around."
+101
Serving Thornton, CO and surrounding areas
Approved
In business since 2020
Free estimates
Small jobs welcome
"Answered right away and was able to come out within a day. Very professional. As a first time owner of a house with fireplace, they explained what was going on how to open and close, my flu, etc. Would recommend."
+3
Serving Thornton, CO and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"Thomas is efficient and did a great job for us. He communicated with me quickly and clearly, focused on meeting my customer needs. Tom installed a new chimney cap, deep cleaned the flue/fire box and repaired some cracked stove fire brick. The work was done on schedule to the our satisfaction, with a warranty. All questions were resolved quickly. I would hire Mile High Chimney again, a job well done."
Serving Thornton, CO and surrounding areas
Approved
In business since 2014
Credit card accepted
Offers commercial services
Sweeping Across Colorado is a family owned and operated business with over 15 years of experience in cleaning, repairing and maintaining chimneys. If you?re looking for a chimney cleaning, repairs, or want to install a new fireplace or insert, give us a call for superior services and honest prices.\n\nOur goal is to provide our commercial and residential customers complete peace of mind knowing that their chimney is in safe and proper working order for maximum enjoyment.
Serving Thornton, CO and surrounding areas
Approved
In business since 1998
Free estimates
Credit card accepted
We are a locally owned and operated company with 18 years of service. We value honesty, integrity, and stand behind our work. We specialize in garage doors and openers, but also offer dryer vent and chimney cleaning, and a variety of related projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!
Serving Thornton, CO and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
"They did a great job inspecting and cleaning our woodstove. Very professional and friendly. We loved how fast they got on it!"
+6
Serving Thornton, CO and surrounding areas
Approved
Credit card accepted
"They did an exceptional job and provided valuable (and fair) insight on the level of cleaning / inspection needed for various chimneys throughout our home. Would definitely recommend."
Serving Thornton, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Customers say: True professional
"I initially contacted Franco for a chimney inspection and cleaning. He discovered that our fireplace chimney needed a bit of work as expected, but more importantly the furnace chimney did not have a liner whatsoever. He came back the next day after gathering supplies to complete the job. He explained everything from start to finish and provided before and after photos of the work. I would absolutely recommend Franco to anyone."
+12
Serving Thornton, CO and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"Michael is our most reliable HVAC specialist. We will keep using him for all our HVAC needs. He is quick to respond and gets the job done fast and efficiently. Very reliable, extremely knowledgeable, and most of all - trustworthy. As a contractor and a client, I could not recommend him more highly."
Serving Thornton, CO and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
At Guerrero's Contracting, we focus on quality fireplace projects. We use our years of experience and expertise to complete your project with perfection. We are easy to work with, and get the job done right the first time. Customer service and honesty are the most important aspects of our business, and your satisfaction is our number one priority. Please call us today, for an estimate. We look forward to working with you!
+20
From average costs to expert advice, get all the answers you need to get your job done.
Find out the average chimney cap replacement cost in Denver, CO, key price factors, and ways to save and budget for your chimney cap project.
Chimney sweep costs can be dramatically affected by the type of chimney, its location, and how dirty it is.
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