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Best fireplace pros near Thornton, CO

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TRUSTED BY THORNTON, CO HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon207
    Verified fireplace services reviews

Top-Rated Fireplace pros in Thornton - Updated Nov 2026

Avatar for Guerrero's Contracting
Guerrero's Contracting
4.6(
183
)
Brick or Stone Fireplace (Gas) - RepairBrick or Stone Fireplace (Non-Gas) - RepairClean and Inspect a gas fireplace+6 more

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!

Guerrero's Contracting
Custom fire pit
Custom fire pit
Custom fire pit
Fence installation

+20

Recommended by95%of homeowners
Avatar for MileHigh Chimney LLC
MileHigh Chimney LLC
5.0(
17
)
Clean and Inspect a wood fireplace chimneyBrick or Stone Fireplace (Gas) - RepairClean and Inspect a gas fireplace+3 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Thomas was very professional and polite. He did a very expert job of getting my indoor fireplace working again after several years of not being able to turn it on. Then he cleaned everything thoroughly and made it look like new, as well as cleaning the area around the fireplace. He also checked my fire pit and made sure it was working properly. I am very satisfied with their service and would highly recommend Mile High Chimney to anyone with a problem."
48 neighbors recently requested a quote
Avatar for Clean Air Genie, LLC
Clean Air Genie, LLC
4.9(
66
)
Clean and Inspect a wood fireplace chimney

Serving Thornton, CO and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"Isabel and Ben were earlier than promised, which was great for me. She explained exactly the process of cleaning my dryer vent. Took pictures of before and after the work. Very knowledgeable and personable, will use them again"
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+3

3 neighbors recently requested a quote
Recommended by5%of homeowners
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Fireplaces FAQs, answered by experts

Schedule routine fireplace service in August or September, just before the heating season begins. Inspect your system in the spring for masonry damage caused by intense freeze-thaw cycles in Thornton. Book an inspection immediately following severe wind events to check for chimney cap displacement. You must also hire a professional if you purchase a new home or plan to switch your current fuel type.

Helpful?

To keep your family safe during fireplace service, isolate children and pets in a separate room. The dry climate in CO allows creosote and ash to become airborne easily. Seal off interior doors and windows to prevent high winds from blowing soot inside. Test your carbon monoxide detectors immediately after the work is done. Schedule this service during warmer months to eliminate accidental heat exposure.

Helpful?

A standard chimney sweep or gas fireplace service takes one to two hours to complete. Technicians adjust gas pressure settings for the high altitude in Thornton, which adds a little extra time to the visit. Extensive masonry repairs take several days. During the peak fall season, expect to wait two to four weeks for an appointment. Permitted structural modifications also extend your overall project timeline.

Helpful?

When hiring for fireplace service, choose licensed contractors who have extensive experience calibrating gas appliances for high elevations. Proper tuning is essential for safety in CO. Confirm that the professional pulls all required municipal permits for structural or gas line modifications. Verify that they follow national fire safety standards and carry adequate insurance. A knowledgeable professional will also advise you on local air quality regulations.

Helpful?

Address fireplace service immediately if you detect a gas odor, suspect carbon monoxide, or see visible cracking in the firebox. Thornton experiences intense freeze-thaw cycles that rapidly worsen masonry water damage. High winds also damage chimney caps, requiring prompt attention. If you just need a routine cleaning and inspection, schedule the work for late summer or early fall before the heavy heating season begins.

Helpful?

The Thornton, CO homeowners’ guide to fireplace services

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