A Little Bit About Us

A Little Bit About Us

A's and Sauer Heating & Cooling

For over 30 years, residents in St. Charles, St. Louis and the surrounding Missouri area have trusted A’s & Sauer Heating & Cooling for all of their HVAC needs. We take pride in our outstanding customer service and ensure that all of our technicians are trained and licensed. A’s & Sauer Heating & Cooling is fully bonded and insured.


We guarantee you'll be satisfied with our services with our transparent style of business.
Call us today and get a head start into the new season!

Some of Our Services