Belleville Heating & Air Conditioning Services

Heating & Air Conditioning technicianWe provide prompt, reliable heating & air conditioning service to Belleville residents. Whether you need us to fix your old furnace, heat pump or air conditioner, or if you need a new state-of-the-art high efficiency heating & air conditioning system, you’ve come to the right place. Our certified HVAC technicians utilize the latest technology to diagnose and repair all brands of central air conditioning and heating systems and always use the finest new HVAC equipment for installations.

Why do Belleville homeowners choose us?

  • We’re always on time!
  • 24/7 Emergency Service
  • Membership and Loyalty Rewards
  • Total Comfort Guarantee

And, we have a consumer-friendly Straight Forward Pricing Guide™ so you know what the price is before we do the work and you are never charged by the hour.

Our HVAC Services and Products Include:

  • Furnace repair, service & installation
  • Air conditioning repair, service & installation
  • Heat pumps
  • Ductless mini splits
  • Water heaters
  • Humidifiers
  • and more

Skilled, Friendly Heating & Air Conditioning Experts

Our heating and air conditioning technicians undergo rigorous background checks and ongoing education so you can feel comfortable knowing that a trustworthy, skilled and safe person is in your home. CALL NOW or schedule your service appointment online. Need new equipment? Schedule a free, in-home estimate online!

21 Degrees One Hour Heating & Air Conditioning is a full-service heating & air conditioning contractor that serves Belleville and southeastern Ontario.


Customer Review

“I was very satisfied, they were polite, prompt and best of all things in my home have cooled down. Many thanks.” – Leslie C.