AC Air Systems – Southern Ontario HVAC Experts
Providing top-quality HVAC installation, maintenance, and service for commercial and industrial clients across Southern Ontario.
Call now for a quote: 905-335-2352 • Emergency Service Available
Why Choose Us?
Servicing Southern Ontario for over 30 years
Complete Commercial & Industrial Services Packages
Certified Technicians, Professional and Reliable Service
Reliable Partners for General Contractors
We are the experts supporting our construction partners and end users for installation of new HVAC systems for the food service industry, supporting restaurants, fast food and quick service restaurants, and commercial and industrial buildings.
If you are a GC, call us to get a quote to support your bids on all of your projects. Our dedicated team of estimators can provide you the best pricing to help you win more bids.
Our Services We specialize in professional HVAC installation, maintenance, and repair services for commercial and industrial clients.
Consultation & Design
Tailored HVAC solutions for commercial and residential buildings, including energy-efficient system planning, load calculations, and equipment selection.
Installation & Commissioning
Full-system installation by certified technicians, including ductwork, refrigeration lines, ventilation, and controls—completed with rigorous testing and quality checks.
Preventative Maintenance & Repairs
Scheduled tune-ups, safety inspections, filter changes, and emergency repair services designed to extend equipment lifespan and reduce downtime.
Retrofit & Upgrade Services
Modernizing existing HVAC systems with high-efficiency upgrades, smart controls, and eco-friendly components to optimize performance and reduce energy costs.
Commercial & Industrial
We deliver full-scale HVAC design, installation, and preventative maintenance solutions for commercial and industrial facilities, ensuring reliable performance, energy efficiency, and compliance with safety standards.
HVAC Repair & Service
We provide fast, reliable HVAC repair and service to keep your systems running smoothly. From emergency breakdowns to routine fixes, we diagnose issues quickly, restore comfort, and extend the life of your equipment with expert care.
Featured Projects
Tim Horton’s – New Restaurant Buildout
We were engaged by the general contractor to fully execute the HVAC system for a brand-new Tim Hortons location. Our team supplied and installed a rooftop unit, diffusers, ductwork, vents, and related components. We completed the sheet metal fabrication, installation, and full system commissioning to ensure optimal performance from day one.
Burger King – HVAC System Overhaul
For this Burger King renovation project, we were contracted by franchise owner to revamp and upgrade the building’s HVAC system. In addition to full equipment supply and ductwork installation—including diffusers, vents, and a rooftop unit—we performed thorough air balancing after commissioning to ensure precise airflow and optimal interior comfort and performance.
Cambridge Industrial Property – Ongoing Service & Maintenance
For this long-standing client, we provide regular HVAC maintenance and responsive service work across their multi-tenant industrial building in Cambridge, ON. Our technicians perform scheduled seasonal maintenance to keep systems running efficiently and extend equipment lifespan. Over the course of our engagement, we’ve also replaced several aging rooftop units to restore reliable performance and improve overall building comfort.
Client Testimonials
Our Suppliers
