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There are 14 highly-rated local air duct cleaners.

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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon95
    Verified air duct cleaning services reviews

Verified Reviews for Air Duct Cleaning pros in O Fallon, MO

*The Angi rating for Air Duct Cleaning companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Duct Cleaning needs.

*The HomeAdvisor rating for Air Duct Cleaning companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Duct Cleaning needs.

Last update on October 08, 2025

Find Air duct cleaners in O Fallon

Countywide Heating and Cooling LLC

6981 Willing St.
4.29(
7
)

Countywide Heating and Cooling LLC

6981 Willing St.
4.29(
7
)
Customers say: Super punctual
22 years of experience

Heating & Cooling, water heaters, zone damper systems, duct cleanig, boilers, We offer a flat rate price for most jobs. Financing available

"Very nice people, but this had been a challenge since literally the day it was installed when it leaked right after they left. I am sure they are capable of installing a very straight forward install, but if there is a problem, and needs more attention, the owner David will hope the problems goes away versus digging in and standing behind the product I paid for him to install and stand behind. I had 12 interactions with the company, and it still did not work properly. I have copies of my communication including when I asked him to have a company representative come out, and that took 8 months. When the Representative did come out, and he was coming inside to address my questions on what I could do to improve the performance, the owner of Countywide said he did not need to come in. That told me he did not care, and meant it, when he had said on the phone earlier that week, after less then one year of installation, I should call someone else to take care of the system. I did have another company come out, and they fixed the noise that David said would always be there, and they reported questionable issues with several aspects of the install. Since then I have had repair to update and correct at a very large expense. I have now had two Mini Split systems installed and this was the first one in June 2016 with the second this year. It was night and day on the 2nd install. The first one looks sloppy outside, and even the Rep who was out did not deny that. His comment was it would be expensive to change. I saved a long time for this purchase. It was a very expensive lesson. I do not suggest them for Mini Split install or any care."

Barb F on August 2018

Heating & Cooling, water heaters, zone damper systems, duct cleanig, boilers, We offer a flat rate price for most jobs. Financing available

"Very nice people, but this had been a challenge since literally the day it was installed when it leaked right after they left. I am sure they are capable of installing a very straight forward install, but if there is a problem, and needs more attention, the owner David will hope the problems goes away versus digging in and standing behind the product I paid for him to install and stand behind. I had 12 interactions with the company, and it still did not work properly. I have copies of my communication including when I asked him to have a company representative come out, and that took 8 months. When the Representative did come out, and he was coming inside to address my questions on what I could do to improve the performance, the owner of Countywide said he did not need to come in. That told me he did not care, and meant it, when he had said on the phone earlier that week, after less then one year of installation, I should call someone else to take care of the system. I did have another company come out, and they fixed the noise that David said would always be there, and they reported questionable issues with several aspects of the install. Since then I have had repair to update and correct at a very large expense. I have now had two Mini Split systems installed and this was the first one in June 2016 with the second this year. It was night and day on the 2nd install. The first one looks sloppy outside, and even the Rep who was out did not deny that. His comment was it would be expensive to change. I saved a long time for this purchase. It was a very expensive lesson. I do not suggest them for Mini Split install or any care."

Barb F on August 2018

Person Mechanical, LLC

3205 Natural Bridge Ave
5.00(
2
)

Person Mechanical, LLC

3205 Natural Bridge Ave
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Family Owned & Operated. Financing Available. Additional DBA Names - Person Heating & Cooling.

"The service was excellent! They were on time, and they called before they come."

Nelson H on July 2020

Family Owned & Operated. Financing Available. Additional DBA Names - Person Heating & Cooling.

"The service was excellent! They were on time, and they called before they come."

Nelson H on July 2020

NATIONAL HEATING AND COOLING

7500 W FLORISSANT AVE
4.50(
2
)

NATIONAL HEATING AND COOLING

7500 W FLORISSANT AVE
4.50(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

established in 1971. Lennox & Bryant Dealer since 1971. 5-8 service personnel and 2-3 office personnel. We serve St. Louis City & County and St. Charles City & County.

established in 1971. Lennox & Bryant Dealer since 1971. 5-8 service personnel and 2-3 office personnel. We serve St. Louis City & County and St. Charles City & County.

Griffin Brothers' 3-D Air Duct & Carpet Cleaning

6901 Riverview Farm Ln
4.83(
23
)

Griffin Brothers' 3-D Air Duct & Carpet Cleaning

6901 Riverview Farm Ln
4.83(
23
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Additional phone numbers: (636) 677-0945, (877) 599-6578 , (618) 222-9340 , (314) 729-7677.

"After a big rain, I noticed a big water spot on my carpet that had been installed only 2 weeks earlier. My carpet installer recommended Griffin Brothers. After giving a couple damage control tips Darla was able to get someone out to my house in less than 2 hours. Brandon was professional, helpful, and courteous. He advised me that for the same reason the Stainmaster keeps stains out, it doesn't dry well, and he removed it. He also assured me that the carpet was drying nicely with my fans and dehumidifier."

Nancy W on August 2019

Additional phone numbers: (636) 677-0945, (877) 599-6578 , (618) 222-9340 , (314) 729-7677.

"After a big rain, I noticed a big water spot on my carpet that had been installed only 2 weeks earlier. My carpet installer recommended Griffin Brothers. After giving a couple damage control tips Darla was able to get someone out to my house in less than 2 hours. Brandon was professional, helpful, and courteous. He advised me that for the same reason the Stainmaster keeps stains out, it doesn't dry well, and he removed it. He also assured me that the carpet was drying nicely with my fans and dehumidifier."

Nancy W on August 2019

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Air Duct Cleaning questions, answered by experts

Attics are particularly dusty because dirt and pollen enter through cracks in your insulation and then sit untouched for long periods of time. To control dust in your home, it's important to vacuum and wipe down attic surfaces whenever you clean. If you use your attic as a finished living space, consider adding an air purifier or speaking with a roofing contractor about possible openings in the top of your home.

There should be at least one vent in every room in your home to ensure proper airflow, but it really depends on the size of your space. Open-concept floor plans should be considered in terms of zones, with an air vent in each one. Additionally, larger rooms may have more than one vent for proper heating and cooling.

Cleaning air ducts improves indoor air quality by removing dust, allergens, and contaminants that can cause respiratory issues and allergies. Clean ducts also enhance the efficiency and life span of HVAC systems by allowing for better airflow, reducing strain on the system, and lowering energy consumption, which can lead to reduced utility bills.

Air vents should never be blocked. It can disrupt the airflow in your home and make rooms too stuffy, hot, or cold. If the vents are blowing out cold air when you want hot air, covering the return vents won't solve the problem. You either have a dirty air filter, furnace problems, or, more than likely, leaky air ducts that need sealing.

If you don’t clean an evaporator coil, you’ll likely experience many unpleasant results, including higher energy bills, mold and mildew buildup, ice or frost buildup, a clogged condensate drain, and more. In addition, you’ll be dealing with an overall uncomfortable home and frequent HVAC breakdowns, plus your HVAC will continue to perform inefficiently.

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The O Fallon, MO homeowners’ guide to air duct cleaning services

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

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