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Hoff Heating and A/C

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1520 Kemmar Ct. , O'Fallon- 63366
Missouri , United States  United States

Today (Sunday) : Closed

Hoff Heating and A/C - O'Fallon

Hoff Heating & A/C Inc., is a full-service HVAC company in O’Fallon. We provide complete solutions for all of our customers. We have built a strong relationship among our customers through our hard work, dedication and integrity.

We diagnose, fix and keep your property's heater, furnace, air conditioner, and indoor air quality equipment of all makes and models. We also sell top branded heating and cooling products. Our replacement division offers equipment that'll respond to your indoor convenience needs. Moreover, we can retrofit older buildings with new heating and cooling systems or indoor air quality systems. Whether you're building your ideal house or you are a specialist developing a subdivision, our new construction department provides you with HVAC solutions for each and every situation.

Our customized sheet metal store guarantees our capability to make perhaps the most challenging modifications look effortless. Our house facility plays a significant part in supporting our dedication to customer care.All our technicians are NATE certified and undergo regular on-going training to keep them update with the latest technology. To know more about our services, give us a call @ 636 240 4633.

Business Operation Hours
Monday 7:30 AM to 5:00 PM
Tuesday 7:30 AM to 5:00 PM
Wednesday 7:30 AM to 5:00 PM
Thursday 7:30 AM to 5:00 PM
Friday 7:30 AM to 5:00 PM
Saturday Closed
Sunday Closed

Other Services : Repair and Maintain,

Service Type : Yes, this business serves customers at their Location
Emergency Services:Services are available 24 hours a day 7 days a week
More Business Info
Certified CompanyBy BBB
Brands CarriedCarrier, Bryant and Goodman etc.

Product and Services

HVAC Replacements and New Installation

We provide full and partial HVAC system repairs, replacements, as well as brand new ground-up installations of furnaces, air conditioner systems, heat pumps, and air quality systems.

Building a New Home? - Hoff Heating and A/C has aligned itself with some of the premium builders in the area to provide quality heating and cooling solutions for their customers. Each new home plan is carefully evaluated with the homeowner to ensure that what we install not only meets their current needs, but the needs of future improvements as well.

Systems Design and Project Management - We can retrofit older buildings with new heating and cooling systems, or air quality systems.

Free Estimates - For a free estimate on replacement furnaces, installation of furnaces, air conditioners, humidifyers, air cleaners, heat pumps, geothermal units, room additions, basement finishes or fireplace installation contact us today!

Full Product Line - When it comes time to replace or add to your existing equipment, Hoff Heating and A/C has the products that will meet your needs.

Repairs and Parts

Our service organization offers unparalleled support in the industry. Though Hoff Heating and A/C is an independent Lennox dealer, we provide support for all makes and models. We pride ourselves on resolving customer issues on the first visit.

Service Department-24-Hour Emergency Service & More

With extended Service Appointments available Monday thru Saturday, most of our customers will never need an Emergency Repair. However, if Murphy's Law applies, we have technicians on call at all times to get your heating or cooling system up and running in the shortest time possible.

Enjoy 5 years peace of mind when a repair is made on your equipment! Equipment repairs, both parts and labor, will have a 5 Year Warranty with continued participation in our Planned Service Maintenance Program. Fix it once and fix it right!!

Air Conditioners

Hoff Heating and A/C is proud to be your local Dave Lennox Premier Dealer™. When you turn to a Dave Lennox Premier Dealer™ for your home heating, cooling and air quality needs, you can take comfort in knowing you've made the right choice.


Hoff Heating and A/C is proud to be your local Dave Lennox Premier Dealer™. When you turn to a Dave Lennox Premier Dealer™ for your home heating, cooling and air quality needs, you can take comfort in knowing you've made the right choice.

Heat Pumps and Dual Fuel systems

A heat pump system is a great investment that can help reduce utility costs throughout the year. A heat pump will provide you with energy efficient heating and cooling, nearly year-round. On extreme winter days, when it is too cold for the heat pump to operate efficiently, your furnace will automatically provide you with warm, reliable heat. A heat pump can be combined with an electric furnace (most common) or a gas furnace (Dual Fuel). A Dual Fuel system is a particularly good investment for a homeowner that is looking to reduce the cost of their high gas bills. Rather than installing a high-efficiency gas furnace, a Dual Fuel system can be installed at comparable cost and provide you with lower utility bills, all while reusing your existing gas flue.


Improving the comfort in your home, does not have to come at the cost of the environment. Geothermal technology is a great heating and cooling option that helps protect the environment, and saves you money!

GeoComfort systems deliver the best in geothermal heating and cooling for every home existing or new construction, large or small. GeoComfort delivers unsurpassed comfort, energy savings and environmental benefit with systems so quiet and so inexpensive to operate and maintain, you'll forget they are there.

Your own backyard has the potential to be an energy source for heating and cooling comfort. Outdoor air temperatures fluctuate throughout the year with the changing seasons. In contrast, ground temperatures about four to six feet below the Earth's surface remain relatively moderate and constant all year. That's because the Earth absorbs 47% of all the heat energy that reaches its surface from the sun. A geothermal system circulates a water-based solution through a buried loop system to take advantage of these constant temperatures. A single piece of equipment has the ability to heat and cool your home, while providing some or all of your home's hot water as well. Geothermal systems can save you 30% to 70% on your monthly utility bills.

Indoor Air Quality

The Healthy Climate Solutions collection includes indoor air quality systems for every need, from industry-exclusive air purification to high-efficiency filtration systems. Designed to work with your central heating and cooling systems, these products control and enhance indoor air quality for an improved, cleaner and more comfortable home environment.

Additional Information

Hoff Heating serves St. Charles & St. Louis Counties, and the surrounding regions, including St. Charles City, Warren, Warrenton, Wright City, St. Peters, Lincoln, Troy, Wentzville, Lake St. Louis, Dardene, O'Fallon, New Melle, Defiance, Kirkwood, Florissant, Hazelwood, Bridgeton, St. Ann, Des Peres, Sunset Hills, Earth City, Chesterfield, Webster Groves, Clayton, Creve Coeur, Wildwood, Ballwin, and Ladue.

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Year Established


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