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Professional St. Louis Heating and Cooling Services at a Fair Price

Serving Residential & Commercial Customers


JT Dunn Heating and Cooling is a full-service residential and commercial heating and air conditioning company committed to providing our customers with the finest professional service, installation, maintenance and indoor air quality at a fair price.


Our well-trained technicians excel at service of existing equipment, installation of new equipment, and preventative maintenance checks. And we pay close attention to your comfort needs and issues, helping find ways to increase your safety, reduce energy bills, and keep your air clean and healthy all year round.


Indoor air quality can actually be worse for you than outdoor air pollution.  If you want fresher, healthier indoor air, the JT Dunn team can clean your air ducts as well as supply the latest in air filtration, air decontamination, dehumidifiers and humidifiers.


We offer:


✓  Fast, friendly service and repairs

✓  Complete system installation

✓  Free estimates and second opinions

✓  Preventative maintenance plans


Effective, affordable comfort for your home or business is just a phone call away. From heating and cooling equipment installations, repairs and maintenance, to whole-house indoor air cleaning, we’re here to help. For the expert advice and exceptional service that keeps your comfort level high and your indoor air clean and safe, count on the team at JT Dunn.

Our St. Louis Heating Services:

Furnace repair, heating installation and furnace maintenance and tune-ups.

Our St. Louis Air Conditioning Services:

Air conditioner repair, AC installation and AC maintenance and tune-ups.

Although we serve the entire Greater St. Louis area, our HVAC company serves these areas most often: 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!