St. Louis Heating Repair, Installation & Maintenance

  • We repair any heating and cooling brand
  • Commercial or residential heating and cooling
  • Warranty all heating repairs
  • Qualified, background-checked heating and cooling technicians
  • Up-front pricing

The most important day for your heating and cooling system is…

…the day your heating and cooling system is installed. On this day the efficiency, safety, durability, and comfort of your HVAC system is defined by the heating and cooling installation practices of the HVAC installation company.

Unlike buying a refrigerator, an HVAC system is field fabricated, so the HVAC installer plays a huge role in ensuring if the HVAC system delivers everything it should. Given the huge variance in quality among HVAC installation companies, it is very likely that your HVAC system will not deliver maximum value if you do not perform the necessary research prior to selection of a heating and cooling contractor. We have an exclusive HVAC installation process made up of checks and balances to ensure maximum performance out of your heating and cooling system.

We provide guaranteed heating and cooling repair service to the metro east and west St Louis area for any heating and air conditioning brand. It’s really quite simple; if our heating and air conditioning service doesn’t leave you feeling good then we don’t want you to pay us a dime. Who would be crazy enough to provide such a heating and cooling repair service promise without the ability to back it up? Certainly not us. Our heating and cooling technicians are background checked, certified in numerous leading heating and cooling programs, and continually trained to be on top of the latest heating and cooling repair solutions. Rest assured, Dunn Heating & Cooling is sending a qualified HVAC technician to repair your heating and cooling equipment.


Our installation process triple ensures you don't see the energy losses detailed in this pie chart.

Our installation process triple ensures you don’t see the energy losses detailed in this pie chart.

Heating Repairs and Installations that are priced right.

Customers who choose us often give us the written estimates of other HVAC competitors, so we have amassed hundreds of bids and estimates.  We know we provide the highest value to our customer because we offer top quality at a price point that is more competitive than every other company in the St Louis area.

Service Areas:

Our St. Louis heating service areas include the following cities: Chesterfield, Oakville, Wildwood, Ballwin, Mehlville, Kirkwood, Maryland Heights, Webster Groves, Affton, Manchester, Lemay, Creve Coeur, Clayton, Crestwood, Town and Country, Richmond Heights, Ellisville, Ladue, Des Peres, Sunset Hills, Brentwood, Olivette, Shrewsbury, Valley Park, Glendale, Rock Hill, Fenton, Frontenac, Warson Woods and Huntleigh. Contact us today!