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Assured Heating & Cooling

Verified Business
HVAC Repair
Location St Charles, MO
4.2
( 5 reviews )
Closed
Write a Review
Location 400 N 5th St, St Charles, MO, 63301, United States

Hours of Operation

Closed
Opens tomorrow at 8:00 AM
Sunday (Today)
Closed
Monday
8:00 AM - 4:30 PM
Tuesday
8:00 AM - 4:30 PM
Wednesday
8:00 AM - 4:30 PM
Thursday
8:00 AM - 4:30 PM
Friday
8:00 AM - 4:30 PM
Saturday
Closed

Holiday Hours: Please call ahead during holidays as hours may vary.

Featured Services

Furnace Installation

Furnace Repair

Heating System Maintenance

Air Conditioning Installation

Air Conditioning Replacement

Apartment HVAC Management

Residential HVAC Services

Commercial HVAC Services

LG Ductless System Installation

Sure Comfort Equipment Installation

Furnace Installation

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Contact for Service

Furnace Repair

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Contact for Service

Heating System Maintenance

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Contact for Service

Air Conditioning Installation

No images available

Contact for Service

Air Conditioning Replacement

No images available

Contact for Service

Apartment HVAC Management

No images available

Contact for Service

Residential HVAC Services

No images available

Contact for Service

Commercial HVAC Services

No images available

Contact for Service

LG Ductless System Installation

No images available

Contact for Service

Sure Comfort Equipment Installation

No images available

Contact for Service

Frequently Asked Questions

What areas does Assured Heating & Cooling serve?

Assured Heating & Cooling serves St. Louis City, St. Louis County, St. Charles City, St. Charles County, Chesterfield, Wentzville, St. Peter's, Arnold, Fenton, Lake St. Louis, Cottleville, O'Fallon, and Alton, IL.

Does Assured Heating & Cooling provide maintenance services?

Yes, Assured Heating & Cooling offers heating system maintenance services to help prevent breakdowns and improve energy efficiency.

Are commercial HVAC services available?

Yes, Assured Heating & Cooling provides commercial HVAC services along with residential and apartment HVAC management.

What brands of equipment does Assured Heating & Cooling service?

Assured Heating & Cooling services all brands of heating and cooling equipment.

Is Assured Heating & Cooling licensed and insured?

Yes, Assured Heating & Cooling is a licensed and insured HVAC service provider with over 15 years of experience.

About Assured Heating & Cooling

Verified

Assured Heating & Cooling is an HVAC business serving St. Louis, MO, and nearby communities including St. Charles, Chesterfield, Wentzville, and Alton, IL. Assured Heating & Cooling offers a range of heating and cooling services such as furnace installation, repair, and maintenance, as well as air conditioning installation and replacement. Assured Heating & Cooling also provides specialized apartment HVAC management and services for residential and commercial customers. The business is licensed and insured with over 15 years of experience in the HVAC industry. It services all brands of equipment and offers solutions including LG ductless systems and Sure Comfort equipment to ensure efficient heating and cooling.

Customer Reviews

4.2
5 reviews
J

John Chartrand

Jun 20, 2024
5.0

The team at Assured Heating and Cooling did an awesome job installing a mini-split heat pump in my bedroom. The bedroom is on the second floor, and that room was impossible to keep cool with my central system. My new heat pump now keeps that room frigid!! They installed the unit in one day—even though much of the work was in a wicked hot attic—and I couldn’t be more happy with their CLEAN install. If you have the same hot bedroom issue I had, I recommend calling the folks at Assured Heating and Cooling before the summer heat.

M

Mary Kay Riordan

Dec 10, 2025
5.0

Assured Heating & Cooling is fantastic! Prompt responses. Quick and accommodating service schedule. Best of all, they know a lot about HVAC and they fix what they say they can and stand behind their service. Thanks, Bruce…your excellent company has made it so much easier than expected, to be a new-to-the-area St Charles home owner:)

K

K

Feb 26, 2026
1.0

just now New I made a review a long time ago (2023 to be exact) and I guess they deleted it. They work for slumlord apartment complexes and allow them to make tenant sweat out through the summer (until you call the city inspector; who instantly got them the fix) and then after fixing the guy looks you in your face and says you have air (IT WAS 68 degrees on Oct 4th). I said THANKS AND WAS MORE INSULTED THAN IMPRESSED. They came multiple times and said the 20 degree rule (if it’s less than 20 degrees inside; than it is outside, it’s ok, it’s just working the air harder. Let me also say that that is bs and if they say that the slumlord is paying them extra to mistreat tenants. While I was not the customer paying; IT WAS MY UNIT THAT I PAY RENT FOR THAT THEY WERE FIXING… so immediate customer or not! I was the CUSTOMER. What makes me more angry is they thought they’d fight Google to delete my post and have it removed and I’d never know it happened. Here’s my new review. The solution was made when I called our city inspector and reported slumlord behavior and inadequate mistreatment. What’s even sadder is we had a special needs toddler and 4 other kids. More than a few people in the household have asthma. They allowed poor treatment and we had 4 er visits for asthma attacks because this company wanted to keep their business w the slumlords than to provide humane care for the tenants. DO NOT USE THIS COMPANY!! Solution was found after I had enough and had a city worker force them to complete. They replaced the entire unit inside my unit and on the ROOF!🤯🤯😡😡 👿 👿

M

Mike Carver

Nov 17, 2025
5.0

We have used Assured for 2 separate but similar install projects. Both experiences have been very easy start to finish. Communication about the projects has been excellent. Installers are professional and knowledgeable. Bruce is courteous and knowledgeable and easy to reach whenever we have a question about our equipment. We would definitely use Assured again and we recommend them to anyone needing HVAC equipment or serving.

C

Celeste Brown

Feb 11, 2026
5.0

Today, Ben, a Jerry Kelly technician came to do a routine check of our HVAC. This could have been an uneventful visit, but for how personable, professional and thorough Ben was. He explained everything that he was going to do before he did it and was very capable. Then, he took time to answer my questions and show an interest in the household that he was serving. He was genuine and mature which was very refreshing. Continue to grow your team with technicians like Ben Tudor and you will always have a winning team!

4.2

Based on 5 reviews

J

John Chartrand

Jun 20, 2024
5.0
The team at Assured Heating and Cooling did an awesome job installing a mini-split heat pump in my bedroom. The bedroom is on the second floor, and that room was impossible to keep cool with my central system. My new heat pump now keeps that room frigid!! They installed the unit in one day—even though much of the work was in a wicked hot attic—and I couldn’t be more happy with their CLEAN install. If you have the same hot bedroom issue I had, I recommend calling the folks at Assured Heating and Cooling before the summer heat.
M

Mary Kay Riordan

Dec 10, 2025
5.0
Assured Heating & Cooling is fantastic! Prompt responses. Quick and accommodating service schedule. Best of all, they know a lot about HVAC and they fix what they say they can and stand behind their service. Thanks, Bruce…your excellent company has made it so much easier than expected, to be a new-to-the-area St Charles home owner:)
K

K

Feb 26, 2026
1.0
just now New I made a review a long time ago (2023 to be exact) and I guess they deleted it. They work for slumlord apartment complexes and allow them to make tenant sweat out through the summer (until you call the city inspector; who instantly got them the fix) and then after fixing the guy looks you in your face and says you have air (IT WAS 68 degrees on Oct 4th). I said THANKS AND WAS MORE INSULTED THAN IMPRESSED. They came multiple times and said the 20 degree rule (if it’s less than 20 degrees inside; than it is outside, it’s ok, it’s just working the air harder. Let me also say that that is bs and if they say that the slumlord is paying them extra to mistreat tenants. While I was not the customer paying; IT WAS MY UNIT THAT I PAY RENT FOR THAT THEY WERE FIXING… so immediate customer or not! I was the CUSTOMER. What makes me more angry is they thought they’d fight Google to delete my post and have it removed and I’d never know it happened. Here’s my new review. The solution was made when I called our city inspector and reported slumlord behavior and inadequate mistreatment. What’s even sadder is we had a special needs toddler and 4 other kids. More than a few people in the household have asthma. They allowed poor treatment and we had 4 er visits for asthma attacks because this company wanted to keep their business w the slumlords than to provide humane care for the tenants. DO NOT USE THIS COMPANY!! Solution was found after I had enough and had a city worker force them to complete. They replaced the entire unit inside my unit and on the ROOF!🤯🤯😡😡 👿 👿
M

Mike Carver

Nov 17, 2025
5.0
We have used Assured for 2 separate but similar install projects. Both experiences have been very easy start to finish. Communication about the projects has been excellent. Installers are professional and knowledgeable. Bruce is courteous and knowledgeable and easy to reach whenever we have a question about our equipment. We would definitely use Assured again and we recommend them to anyone needing HVAC equipment or serving.
C

Celeste Brown

Feb 11, 2026
5.0
Today, Ben, a Jerry Kelly technician came to do a routine check of our HVAC. This could have been an uneventful visit, but for how personable, professional and thorough Ben was. He explained everything that he was going to do before he did it and was very capable. Then, he took time to answer my questions and show an interest in the household that he was serving. He was genuine and mature which was very refreshing. Continue to grow your team with technicians like Ben Tudor and you will always have a winning team!

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Frequently Asked Questions

5 Questions

Find answers to common questions about Assured Heating & Cooling.

What areas does Assured Heating & Cooling serve?

Assured Heating & Cooling serves St. Louis City, St. Louis County, St. Charles City, St. Charles County, Chesterfield, Wentzville, St. Peter's, Arnold, Fenton, Lake St. Louis, Cottleville, O'Fallon, and Alton, IL.

Does Assured Heating & Cooling provide maintenance services?

Yes, Assured Heating & Cooling offers heating system maintenance services to help prevent breakdowns and improve energy efficiency.

Are commercial HVAC services available?

Yes, Assured Heating & Cooling provides commercial HVAC services along with residential and apartment HVAC management.

What brands of equipment does Assured Heating & Cooling service?

Assured Heating & Cooling services all brands of heating and cooling equipment.

Is Assured Heating & Cooling licensed and insured?

Yes, Assured Heating & Cooling is a licensed and insured HVAC service provider with over 15 years of experience.

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Location

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400 N 5th St, St Charles, MO 63301

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