Small Company Big Results.
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Installation & Repair
From furnace installation and air conditioning repair to heat pumps, ductless systems, gas lines and indoor air quality – Cassar provides complete HVAC services for Durham Region homeowners. We serve Oshawa, Whitby, Ajax, Pickering, Clarington, Bowmanville, Newcastle, Courtice, Orono, Port Perry, Uxbridge and Brock. Every job is handled personally by David Cassar, a TSSA-licensed technician with over 20 years of experience. No subcontractors. No shortcuts.
Industry Experts
Cassar Heating and Air Conditioning has been delivering trusted HVAC services across Durham Region since 2011. After nearly a decade working in the industry, owner David Cassar founded the company with a simple mission — professional workmanship at a fair price, every time. Based in Durham Region and serving communities across the GTA, we specialize in residential HVAC installation, repair and maintenance. Whether you need a new furnace, air conditioner, heat pump or hot water tank, we bring 20+ years of hands-on experience to every job.
Not sure where to start? Call David directly for honest advice — no pressure, no obligation.
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