West County & Surrounding Areas

HVAC Service Map

One Hour Heating & Air Conditioning® of West County

4.84

(159253 reviews)

Heating & Cooling Services for West County & Surrounding Areas

100% Satisfaction guarantee!

As the leading HVAC service provider in MO and throughout the United States, we proudly serve communities from coast to coast—bringing expert service and peace of mind to homes throughout your area. One Hour Heating & Air Conditioning® of West County is based in Chesterfield and provides expert heating and cooling services to residents in West County and the surrounding areas.

Check out our complete service area map below. If you’re still unsure whether we service your address, give us a call at (314) 682-4654.

Two One Hour Heating & Air Conditioning technicians standing confidently in front of a service van.

Heating, AC & Furnace repairs in West County

100% Satisfaction guarantee!

When homeowners want a reliable heating or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort.

At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It’s why we back all of our work with a 100% customer satisfaction guarantee for two years, and it’s why we’re always on time - guaranteed.

HVAC Near Me In...

One Hour Heating & Air Conditioning® of West County services the following communities:

Ballwin
Chesterfield
Earth City
Ellisville
Grover
Harvester
Manchester
Maryland Heights
Valley Park
Wildwood

We Have a Reputation

For Being Punctual, Friendly and Knowledgable

5.0

(16 reviews)

Bill Wischmeyer

05-15-2025

“Farrell was timely, friendly and competent. What more could you ask for?”

michele Davis

04-09-2025

“Well the office staff was very patient with me making several calls to them to find out what time Ferrell would be here because I had a doctors appointment so a big shout out to them and Ferrell who comes out and checks my heating and air unit, Every six months is awesome. Great guy! He really helped me out today so that I could get on my way to my doctors appointment so thank you Farrell.”

Patrick Tipton

04-09-2025

“On time, excellent service, and reasonably priced. Don't make the mistake of trying to DIY your HVAC, call the professionals and let them give you that peace of mind. I will be using Dunn for my HVAC needs in the future, thank you!”

Dave C

03-27-2025

“I have been using Dunn for many years and have been happy with their service. They were on time and got things done in a timely manner.”

Rob Lutfiyya

03-14-2025

“What an amazing company! We couldn’t be happier with the quick and professional service we get from Dunn One Hour. TOP NOTCH!”

David and Margaret Gloyd

03-10-2025

“Fast, professional and excellent service. They were here quickly after we called with an issue with our upstairs furnace. They had the problem resolved quickly and affordably.”

Robert Gibson

07-10-2023

“Very professional , on time , came out next day definitely would recommend!”

Sharman Ray

07-09-2023

“When your air conditioner suddenly quits in the heat of the summer this is the company to call. Nathan and Logan were on time, efficient and very professional.”

Micah Vaninger

06-28-2023

“New system install done quickly and correctly! Friendly and professional crew.”

darla Ray

06-28-2023

“Friendly, professional, efficient”

Special Offers

Mention these discounts at time of service

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$79 HVAC Tune Up

Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply.
Up to $ 2,000 Tax Credit on HVAC Purchase

Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply.

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