Restaurant makeup air units are gas-fired or electric rooftop appliances that replace the volume of air removed by kitchen exhaust hoods. When a unit fails or falls out of balance, most Toronto restaurants cannot legally or safely continue operating. Best HVAC Toronto services, repairs, and replaces restaurant MAUs across the GTA, with servicing and repair from $3,000 to $8,000 and full unit replacement from $15,000 to $60,000 in Canadian dollars. Emergency dispatch is available for closed-kitchen situations, with our crew typically reaching sites across Toronto and the wider GTA within two to four hours.
What does our restaurant MAU service cover?
Best HVAC Toronto handles gas-fired and electric makeup air units for restaurants, cafeterias, institutional kitchens, and commercial food facilities across Toronto and the GTA. The work spans scheduled servicing and preventive maintenance, heat coil and burner repair, airflow balancing, exhaust hood interlock testing and commissioning, full unit replacement with crane coordination, and emergency response when a failed MAU has closed the kitchen.
Our crew is TSSA G1/G2 certified for the natural gas work that a gas-fired MAU requires. That means the CSA B149.1 gas code compliance, the pressure test, and the clearance sign-off are handled by the same team that assessed and repaired the unit, rather than coordinated across a separate gas contractor. We carry the NFPA 96 knowledge that commercial kitchen ventilation jobs demand, covering both the supply and exhaust sides of the air balance.
Toronto Public Health inspectors check ventilation as part of food premises inspections. After every service and commissioning job, our team provides a written service report with airflow readings and interlock test results in a format inspectors accept, so the paperwork is ready when you need it.
What is included in a standard MAU service visit?
A standard service visit covers combustion analysis on the gas-fired heat coil, heat exchanger inspection, burner cleaning and adjustment, damper and actuator checks, supply fan belt and bearing inspection, filter replacement, airflow measurement against the design volume and hood exhaust rating, interlock operation test and adjustment, and a written service report with all recorded readings. Our team also checks for negative kitchen pressure and flags any configuration that is pulling conditioned air from the dining room or bar area into the kitchen through gaps and openings.
What types of restaurant MAU work do we handle?
MAU servicing, repair, and maintenance contracts
Annual and bi-annual servicing catches problems before a heat coil failure or a seized damper closes the kitchen for a day. Our crew carries common repair parts for major commercial MAU brands and completes most service calls in a single visit. For higher-volume kitchens operating six or seven days a week, a quarterly schedule reduces the risk of an unplanned closure during peak business hours.
Emergency MAU repair and dispatch
A closed kitchen is a revenue emergency. Our team holds emergency availability for closed-kitchen MAU calls and dispatches across the GTA, prioritising sites where the restaurant cannot operate. Most emergency calls are resolved or temporarily stabilised on the first visit, and where a part is not on the van we source it and return as quickly as possible.
MAU replacement and upgrade
When a unit is beyond economical repair, over-sized, under-sized for the current exhaust hood, or failing NFPA 96 airflow requirements, replacement is the correct course. Our team sizes the replacement against the current exhaust volume and available gas supply capacity, specifies the correct unit, coordinates the crane lift and roofing work, runs any new gas supply required under a TSSA permit, and commissions the exhaust interlock and controls before handing over the documentation package.
Airflow balancing and negative pressure correction
Odour migration into the dining area, doors that are hard to open, and combustion appliance draft problems all point to a supply/exhaust imbalance. Our crew measures CFM on both sides of the system, adjusts dampers and variable frequency drives where present, and documents the corrected readings for your records and for the health inspector.
Demand control kitchen ventilation integration
High-volume kitchens with variable cooking loads can reduce energy costs by modulating exhaust and makeup air volume based on actual cooking activity rather than running at full capacity through every off-peak hour. Where the existing MAU and hood controls support it, our team integrates demand control ventilation to reduce fan and burner run hours during quieter periods.
What affects the cost of restaurant MAU work in Toronto?
Unit size is the primary cost driver for replacement: a small quick-service restaurant MAU runs toward the lower end of the $15,000 to $60,000 range, while a high-volume full-service kitchen, a stadium catering operation, or a multi-unit venue runs higher. Gas supply capacity can add cost if the existing line needs upgrading to serve a larger burner. Crane access and roof conditions affect both the crane rate and the roofing trade coordination required for a clean roof penetration.
For servicing, the main variables are run hours on the unit, grease loading in the supply duct and heat exchanger, and the condition of the combustion components after high-demand seasons. A kitchen operating seven days a week accumulates run hours quickly, and a scheduled annual service visit typically costs far less than the lost revenue and emergency call premium from a heat coil failure mid-service.
All pricing is confirmed in a written scope before work begins. Emergency dispatch rates apply for after-hours calls on closed-kitchen situations, and those rates are disclosed before our team heads to site so there are no surprises on the invoice.
Restaurant and commercial kitchen MAU service across Toronto and the GTA
Our team serves restaurants, cafeterias, institutional kitchens, and food facilities across Toronto, North York, Etobicoke, Scarborough, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, and the Durham region. For emergency closed-kitchen calls, we target a two to four hour response across the GTA, including evenings and weekends when most kitchen failures happen to occur.
If your MAU shares a roof with a rooftop unit or other commercial HVAC system that also needs attention, our crew handles both in the same mobilisation. Gas compliance issues, including any TSSA red tags related to commercial gas appliances, are handled in-house by our G1/G2 certified technicians rather than subcontracted to a second trade.
To book a service visit or discuss an emergency closed-kitchen call, contact our team at 647-254-4113. Scheduled appointments run Monday through Saturday from 7:00 AM to 8:00 PM, and emergency kitchen dispatch is available around the clock.
