(636) 240-4739 / Family Run Business since 1961

American Standard

Leading The Way In Comfort With American Standard Heating & Air Conditioning


Quality Appliance Service is your dealer for American Standard Furnaces and Air Conditioners.

We take great pride in the quality and long-term performance of these Heating and Air Conditioning systems.

Whether for home or business with American Standard, The system will work quietly and efficiently, giving you years of carefree comfort and peace of mind. American Standard Heating & Air Conditioning units are tough and engineered with the most energy-efficient standards.

American Standard Furnaces  are rated number 1 call us if you live in O’Fallon or St Peters  St Charles or Wentzville area 636-240-4739 or in St Charles MO 636-946-6682. We cover all of St Charles County. Licensed Bonded and Insured.


Aprilaire Humidifiers

Special Pricing on Aprilaire Humidifiers now through Winter 2024

Call for details   636-240-4739


Do I Need New Equipment in 2024

If your current system uses R22 Freon then you will be replacing it sooner than you would want to. This type of freon is no longer being made or brought into the United States. What ever is on hand now is all there is. Updating your equipment before the day time temps reach into the 90s and your old system has a failure that involves this type of freon is a wise move.


How Ready are You For A New System

Mitsubishi Zone Comfort

Using Mitsubisihi  for those rooms over the garage or office space that is hard to heat or cool maybe just what you are looking for. We can cool just one room or your hole office floor or house.

Summer Is Coming








Zoning your HVAC system puts you in the driver seat

Arzel Zoning Control Panels

Arzel Zoning Dampers

If you are experiencing a problem with your household or commercial rooms being to hot or cold we are here for you. With Arzel Zoning you can control what goes into what floor or room. With a lifetime warranty on the control panels and dampers you can rest asure the equipment is there for many years of  trouble free operation.