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J.A. Smith is a full service heating, air conditioning, ventilation, and refrigeration contracting company located in Warminster, Pennsylvania. We design, install, maintain, and repair systems in the Delaware Valley area (metropolitan Philadelphia).

Fully licensed and insured, we are dedicated to the service of our customers and the preservation of the environment.

Residential Services

  • Free in-home estimates for heating & cooling system replacements
  • Full installation by qualified, uniformed technicians
  • Computerized analysis of equipment operating costs & savings
  • Service & maintenance agreements
  • Extended warranties to protect your equipment for up to 12 years


  • Professional computerized design
  • Customized heat gain/loss calculations
  • Custom duct work from our sheet metal shop

J.A. Smith now accepts American Express along with Visa, MasterCard and Discover for your convenience.

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