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  • Harold Heating and Cooling Website
    (705) 357-2010
    16700 Sideroad 17A, Sunderland, ON L0C 1H0

    Harold Heating & Cooling provides residential and commercial heating, cooling, and ventilation solutions across Ontario. They install high-efficiency furnaces, in-floor radiant heating, central air conditioners, heat pumps, and backup power systems. The family-owned firm also offers air quality imp…