OHAC Ltd. ensures building comfort and productivity through first-rate mechanical construction, automation and service solutions in Ontario industrial, commercial and residential high-rise properties.

Serving customers for 30 years, Ontario Heating & Air Conditioning Limited (OHAC Ltd.) began as a family-run HVACR company. With its humble beginnings, OHAC Ltd. is now a trusted resource for new construction and retrofit, offering full-scope solutions in sheet metal, design build, as well as installation systems and products.

OHAC Ltd. continues to operate under the same guiding principles; unparalleled quality, safety and customer service.

highly skilled and experienced mechanics

Service is always met with technicians who continually train and certify their trade and safety skills. Our long-term customers hold in high regard the rapport and trust built with our carefully-selected technicians. OHAC Ltd. journeymen are members of United Association Local 787.

our commitment to safety

The health and safety of OHAC Ltd. employees is integral to our company culture and productivity. OHAC Ltd. is an active member of ISNetworld. We have centralized our compliance data within the program and streamlined our reporting process, making it easier for clients to prequalify our company.

mechanical services

design and installation

Our dynamic and high-functioning team of management and service technicians offer industrial and commercial clients complete solutions and are extremely flexible in their approach.

Our mission is to exceed expectations while addressing budgetary constraints from beginning to end. As a small team, we are able to personalize our process from design to installation, ensuring that all HVAC/R needs are met, as well as those that evolve overtime.

preventative maintenance &
24/7 service

Service is always met with technicians who continually train and certify their trade and safety skills. Our long-term customers hold in high regard the rapport and trust built with our carefully-selected technicians.

Ontario Heating and Air Conditioning Ltd. works together with its customers to develop preventative building maintenance programs that have been proven to sustain the lifetime of their buildings, while reducing emergency repairs, increasing safety and efficiency. The information captured during ongoing service programs play vital role in our customer's capacity to properly maintain, operate and budget for their buildings.

call or email us today

email. tony@ohac.ca telephone. 905. 726. 4141 fax. 905. 726. 3305