Who we are

Part of the One Alliance Group of Companies (Limited), One Alliance HVAC serves both residential and commercial clients throughout the Greater Toronto Area. We are fully equipped to install, service, and repair heating and cooling units of all makes and models.

Our carefully trained and experienced technicians lend their expertise to get the job done safely, on time, and with great attention to detail- ensuring client satisfaction while preventing costly, unforeseen repairs. One Alliance HVAC treats your property with great care, as if it were our own.

Our services are covered by $2 million liability insurance. Additionally, our employees are insured under the WSIB (Workplace Safety Insurance Board).

Let us work with you to meet your home or business’ heating and cooling requirements while maximizing energy savings.

To provide our clients with choice and ensure a job well done, One Alliance HVAC is a manufacturer authorized installer for the following HVAC brands: Carrier, Bryant, Keeprite, Mitsubishi and Payne.