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Top Air Conditioning Contractors in O'Fallon, MO

A comprehensive list of in O'Fallon, MO commercial and residential air conditioning companies offering installation, replacement and repair services. Read unbiased customer reviews and recommendations of local contractors.

Looking for an heating and air conditioning service company in St Charles County? Look no further, Quality Appliance Service can take care of all your major Appliance, AC and Heating installation and service needs in your home or business. We are an American Standard and Mitsubishi Dealer service company.
Craig Phillips — QAS is a top notch company; they do good work at a fair price. Tina, Mike and Eric are a great team. Communication is spot
The owner, Rick Nipper, has been in the HVAC trade since 1976. We serve only the Lake of St. Louis, O'Fallon and St. Peters areas. We appreciate our clients and realize that word of mouth is the finest form of advertizing. O'Fallon Air supplies quality service at a very affordable price. No 2nd diagnostic charge if your system should break down within thirty days of our 1st visit.
Kyle Dent — Just joined the O'Fallon Chamber of Commerce and could not be more impressed! They welcomed my business and I with open arms