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Hoff Heating & AC

HVAC Companies in O'Fallon, Missouri
Ranked #5 in O'Fallon | Grade B+
4.90 (1,516 reviews)

Hoff Heating & AC

Hoff Heating & AC provides repair, maintenance, and installation for heating and cooling systems in the O'Fallon, Missouri area. Technicians are noted for careful in-home practices and clear communication about test results and options.

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Why Homeowners Choose This Business

Customers highlight clear communication during service visits, careful work practices in the home, and technicians who explain test results and options. The team is noted for same-day help on urgent comfort issues when scheduling allows Local experience that helps homeowners across O'Fallon, Missouri compare a more region-aware provider.

Service Area

Serving O'Fallon, Missouri and surrounding St. Charles County communities, with work throughout the nearby metro-west St. Louis area.

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Listing details

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  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Has more review volume than many local competitors.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Renovation Services
  Furnace Repair
  Maintenance
  AC Repair
  Installations
  Hvac Maintenance
  Repairs
  HVAC installation
  Thermostat service
  Humidifier service
  Ductless Mini-Split
  Geothermal HVAC
  Indoor Air Quality
  New Construction HVAC
  Heat Pump Service
  HVAC replacement

Furnace and AC repair, HVAC maintenance plans, system replacement and installation, thermostat and humidifier service, ductless mini-split solutions, geothermal system service, and new-construction HVAC.

Reviews

Customer Reviews

Vito Sansone
We had to replace a hot water heater that was part of our geothermal heating/cooling system. The installer (12 years ago) had hooked it up in a unique way. Kevin had to get some unusual joints and connectors in order to replace the old un…
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We had to replace a hot water heater that was part of our geothermal heating/cooling system. The installer (12 years ago) had hooked it up in a unique way. Kevin had to get some unusual joints and connectors in order to replace the old unit. Kevin showed flexibility and expertise and got it all connected. He did a great job. Thanks, Vito Sansone
JAMES CHETTLE
Semi-annual HVAC equipment inspection as part of a service contract. Blake and his fellow technician both put on footwear covers upon entering my home. They introduced themselves and promptly went to work. Upon completion, Blake explained…
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Semi-annual HVAC equipment inspection as part of a service contract.

Blake and his fellow technician both put on footwear covers upon entering my home. They introduced themselves and promptly went to work.
Upon completion, Blake explained that testing showed all components of the furnace were functioning up to standards and no repairs were needed.
He also mentioned that since the filter had been recently replaced, they just inspected it and found it to be clean.
Before departing, they reset the thermostat to the setting they found before the inspection.
Bottom line - the Hoff staff were courteous, professional and friendly!
Lynn Schwane
We were having issues with our thermostat and humidifier. They came out the same day, fixed the issue and explained thoroughly. The tech was very professional. We will always use Hoff Heating & AC due to their great customer service!
Mike Hoffman
Tim was great! He went above and beyond when I asked for an additional item when he was inspecting my furnace. I have been so impressed with Hoff Heating that I had them put a new furnace and air conditioner in my son's home and had them…
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Tim was great! He went above and beyond when I asked for an additional item when he was inspecting my furnace. I have been so impressed with Hoff Heating that I had them put a new furnace and air conditioner in my son's home and had them service my daughters home. A reliable and professional business to work with.
Chris Templeton
Honestly, we were about to go with another company, mainly because of the longer parts and labor warranty. But something just didn’t feel right, especially with their absolutely outlandish loan package. We went back to Markus, who had prov…
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Honestly, we were about to go with another company, mainly because of the longer parts and labor warranty. But something just didn’t feel right, especially with their absolutely outlandish loan package.

We went back to Markus, who had provided us a quote a bit earlier, asked a few more questions, and then applied for a loan from the same lender as the first vendor. The terms came back dramatically better and far more reasonable.

Today, the three installers showed up on time and completed the installation with real professionalism, including walking us through all the instructions for operating and maintaining the units.

We’re really appreciative of Hoff and their steady, down-to-earth approach throughout the entire process.

We couldn’t recommend them more highly.

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Frequently Asked Questions

They handle repairs, maintenance, and full system replacements for furnaces and air conditioners. They can also assist with thermostats, humidifiers, ductless mini-splits, geothermal-related components, and new-construction HVAC.

Yes, reviews reference semi-annual inspections as part of a service agreement. These visits typically include system testing, filter checks, and a summary of findings.

Some customers report same-day service for urgent issues. Availability depends on scheduling and call volume, so calling early improves the chances.

They have serviced equipment tied to geothermal systems, including water heater and connection components. For specifics on your setup, it’s best to call with model details.

Office hours are Monday through Friday 7:30 AM to 5:00 PM and Saturday 8:00 AM to 4:00 PM. Sunday is closed. Check the website or call to confirm current availability.
 Verified Listing

Opening Hours

  • Monday 7:30 AM – 5:00 PM
  • Tuesday 7:30 AM – 5:00 PM
  • Wednesday 7:30 AM – 5:00 PM
  • Thursday 7:30 AM – 5:00 PM
  • Friday 7:30 AM – 5:00 PM
  • Saturday 8:00 AM – 4:00 PM
  • Sunday Closed

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Business Details

Business Rating
4.90 (1,516 reviews) Featured BusinessPro Listing
Address
1520 Kemmar Ct, O'Fallon, MO 63366
Business Type
HVAC Contractor
Website
https://hoffheating.com/
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