St. Louis AC Maintenance, Tune-Ups & Inspections

For over a decade, Dunn Heating & Cooling has served the Greater St. Louis area as an air conditioner contractor, and more so as an overall HVAC/Mechanicals contractor, handling residential and commercial clients across the region.

We’re experts in air conditioner repair; heating and cooling service; and heating and cooling installation. All Dunn Heating & Cooling customers receive same day service, with upfront pricing, and a 100% Work Guarantee. Our teams are all members of qualified trade associations, rigorously trained, professional, courteous, and uniformed.

Whether your home is too cold or too hot, Dunn Heating & Cooling offers the heating and air conditioning services to get you back in your comfort zone quickly and affordably. We’ve become one of the best contractors in the St. Louis area, serving residential customers with superior products and professional, ethical service.

Dunn Heating & Cooling Specializes In:

  • New Construction (residential or commercial)
  • Retrofits
  • Repair & Maintenance
  • 24 Hour Service
  • Mechanical Systems Design
  • System Concept and Budgeting
  • LEED and Energy Evaluation
  • Sheet Metal/Ducting Fabrication

Our St. Louis AC maintenance 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.

Maintainence & Tune-Ups