Proudly servicng London and surrounding area since 1995
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A.J. Smith Heating and Cooling
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Welcome to A.J. Smith Heating and Cooling.

We have been proudly serving London, Dorchester and the surrounding area since 1995.

Our team takes great pride in providing our customers with prompt, honest and personalized service we will work with you to find the most economical solution. We are proud to be a Better Business Bureau Accredited Business.

We install, repair and service most brands and offer products from American Standard, Goodman and Mitsubishi.

Let A.J. Smith be your first and only call for all of your heating, air conditioning and air quality needs.

CALL 519-670-5793 OR 519-268-7498
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"I contacted A.J. Smith Heating & Cooling for an estimate on a new Furnace. Not only did I receive the most detailed and professional consultation, but a price that worked into my budget. I am so happy with my new furnace, and the professional installation from A.J. Smith. Looking forward to a continued relationship."
Carter C
"I would like to say “Thank You” to Steve and his team of professionals at A.J. Smith Heating & Cooling. He not only dealt with my issues professionally, but solved and repaired the problem with my furnace that three other companies couldn’t fix."
Frank F
"I wanted to write this note to thank you for the unbeliveable service I received early last Tuesday morning. It was 3:00am and I realized that I had no heat. I called A.J. Smith Heating & Cooling and to my surprise a service technician answered, not an answering machine. He was so understanding to my issue, and said he would be right out. He arrived in less then an hour and explained in detail to what had to be done to restore my heat. He performed the repair and was very knowledgeable and professional. Receiving service like this today is rare, but its nice to see that A.J. Smith Heating & Cooling takes 24 hour service very seriously. Do you guys ever get to sleep? Thanks again!!!"
Daniel A
"Thank you for repairing my Air Conditioner last week. With the recent heat spell, I don’t think we would have survived. Your expertise and professionalism was nice to deal with. I wish I could say that about the two other companies that couldn’t figure out the problem. Just to let you know that the A/C is working great now. See you in the fall for the furnace."
Kenni S