About Us

Alliance Energy Source has started the operation in early 1999 & over the years it has grown up into one of the most well known & established companies with 3 locations to providing homeowners with quality products & solutions for heating and Air conditioning services in the GTA. We are your single source for all of your Heating, Cooling, Boiler, Heat pump, Furnace, Air Conditioner, Hot Water Tank, Tankless Water Heater, Thermostat, HRV, Attic Insolation needs.






              Since 1999




Our experienced & knowledgeable technicians invest their time to guide homeowners in choosing the right products to increase the energy efficiency in their home & they love the new look & comfort of their home. We service all over GTA, Toronto, Scarborough, Ajax, Pickering, Whitby, Oshawa, Etobicoke, North York, Thorn hill, Markham, Arora, New Market, Vaughan, Woodbridge, Mississauga, Brampton, Milton, Oakville, Burlington & Surrounding Areas. We have qualified & Licensed technicians who provide high quality small commercial and residential services. They just don’t provide the technical services but also provide excellent customer service in a very friendly manner.
We provide 24/7 friendly emergency services to maintain and repair all types of heating and cooling systems.





Nothing Can Stop Us in Hvac

  • Experienced
  • Reliability
  • Always Learning Hvac
  • Certified
  • Fully Insured
  • Friendly
  • Award Winners
  • Fair Price
  • Active in Community
  • Your Satisfaction is our HVAC PRIORITY.

We Are Proud To Be A Primum Lennox Dealer


We Are Proud To Be A York Dealer


We Are Proud To Be A Financeit Dealer


We Are Proud To Be A HRAI member


Facebook - Instagram - YoutubeWe Are Proud To Participate in Social Media 


We Are Proud To Be Registered With TSSA


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Alliance Energy Source




TEXT: 416-887-9065

Head Office:

Markham:19-7370 Woodbine Ave., Markham


Facebook: Alliance Energy Source 

Instagram: allianchvacca