Need Service or Have an Emergency? Call: 800 727 0750Rebates & Promotions
  • August sale $500 off Lennox air conditioner


    Catch this end of summer deal! Save $500 on any Elite Series Lennox air conditioner or higher. Plus take advantage of thousands of dollars in rebates for even more savings. Want to rent your A/C?  We'll still take off $500! View promotion
  • 24 Months at 0% financed air conditioner deal

    Summer is for enjoying

    Spend on fun, not A/C. Finance your purchase of a new Air Conditioner and take 24 months to pay at 0% interest. Save on the comfort you need, and spend on the fun you want this summer! Learn more.  
  • Winner of 2017 Top 100 Small and Medium Employers

    As a proud member company of Reid's Heritage Group, we are honoured to have earned a spot on the list of Canada's Top 100 Small & Medium Employers for the third year in a row. Learn more about our award-winning team.
  • $100 Mastercard with water heater rental

    $100* Gift with Water Heater Rental

    Now you can get a $100 Prepaid Mastercard when you rent most models of water heater! Plus first 3 months deferred payment, and a lower regular monthly rate than you're paying now. See more details.
  • image of Comfort Advisor consulting with homeowner

    Free Home Comfort Consultation

    Do you have questions about your plumbing or HVAC systems? Let our trade licensed Comfort Advisors explain your equipment and advise on upgrades or repairs. Learn more about a no obligation in-home visit.


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24 Hour Service

Hy-Mark offers 24/7 Emergency Service for no-heat, no air conditioning and plumbing needs!*
Toll-Free: 800 727 0750

Head Office

5068 Whitelaw Road, Unit #4
RR6, Guelph ON N1H 6J3
Phone: 519 822 6656
Toll-Free: 800 727 0750

Owen Sound Office

105 Shane Street
Units 2 & 3
Springmount Business Park
Owen Sound ON N4K 5N7
Phone: 519 376 1678
Toll-Free: 800 727 0750

London Office

179 Exeter Road, Unit C
London ON N6L 1A4
Toll-Free: 800 727 0750