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Dunn One Hour Heating & Air Conditioning of St. Louis

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For air conditioning and heating installation experts, visit award-winning technicians at Dunn Heating & Cooling. Proudly serving residents of the St. Louis area with professional service, full-service installation, and top maintenance care. Learn why Dunn Heating & Cooling is considered one of the best heating and air conditioning companies in St. Louis. 

A core value of Dunn Heating & Cooling, and what sets them apart, is their commitment to providing clean indoor and outdoor environments. By utilizing eco-friendly products and techniques, Dunn Heating & Cooling serves with a sense of social responsibility to protect the environment while ensuring the people they serve are safe.  

Dunn Heating & Cooling is also known for: 

  • Quality service and repairs 
  • Full-service installation 
  • Free estimates 
  • Quality preventative maintenance plans 

Have your home meet your needs with a customized heating and cooling system for optimized home comfort -- all within your budget. Work with knowledgeable and passionate specialists that provide the solutions to your indoor heating and air conditioning challenges on any residential and commercial building. Reduce your utility costs with top brand temperature-controlled systems from Trane and help from the team of technicians at Dunn.  

For full-quality energy performance, Dunn Heating & Cooling offers services including: 

  • Furnace repair and installation 
  • Heating repair and installation 
  • Furnace maintenance and tune-ups 
  • Air conditioning repair and installation 
  • AC maintenance and tune-ups 

Dunn Heating & Cooling proudly serves residents of the greater St. Louis area including: 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. Call Dunn Heating & Cooling today for all of your home comfort needs!



Schedule Appointment


Wells Fargo Financing


St Louis, Missouri 63129


NATE Certified
24/7 Emergency Service