
Are you seeking any heating or cooling services (Furnace, Air Conditioner, Tankless or Water Heater) for your household in Oshawa, Ontario?
Rental/ financing water heater, tankless, furnace or air conditioner easy Enbridge Gas billing service available for your convenience, no additional bills. If you’re looking for knowledgeable and professional technicians to service your HVAC heating and cooling needs then you’ve came to the right place. DeMark Home Ontario will provide you with the top quality high efficiency furnace, air conditioner, tankless or hot water heater installation/ upgrade and repair services to homeowners in the Oshawa, Ontario area.
Request Quote To ensure that you receive the best quality services on HVAC equipment in Oshawa, Ontario turn to DeMark Home Ontario your heating and cooling expert. Our Oshawa furnace or air conditioner services include:
- High efficiency Air conditioner (AC) and Furnace installation and upgrade in Oshawa
- High efficiency Air conditioner (AC) and furnace rent in Oshawa
- High efficiency Air conditioner (AC) and furnace financing in Oshawa
- High efficiency Air conditioner (AC) and furnace Purchase/ Sale in Oshawa
- High efficiency Air conditioner (AC) and furnace repairs and maintenance in Oshawa
- High efficiency and mid efficiency Air conditioner (AC) and furnace inspection in Oshawa
- Best high efficiency furnace and air conditioner (AC) rental rates in Oshawa
- Cheap and affordable high efficiency furnace and air conditioner (AC) prices in Oshawa
- Chimney liner installation in Oshawa
- Red tag clearance on your hot water heater, furnace in Oshawa
- Rental water heater and tankless upgrade in Oshawa
- Enbridge billing service available for water heaters, furnaces, air conditioners rent and finance in Oshawa




Our friendly and highly experienced staff will always be available to answers any questions you may have about your furnace, air conditioner (AC), water heater, tankless unit.
For a free consultation, estimate or to book your maintenance call please contact us:
By phone: 647-847-2998 or Toll Free 1-855-998-2998
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Service Area
DeMark Home Ontario servicing area for HVAC-furnaces, air conditioners, hot water heaters, tankless units includes: Toronto, GTA, Vaughan, Mississauga, Brampton, Markham, Scarborough, Milton, Burlington, Niagara Falls, Oshawa, Pickering, Ajax, Aurora, Newmarket, Barrie, Ottawa and more. For a full servicing area please click here.