Kitchen Ventilation & Make-Up Air in Tustin, CA
Pad buildings at the Market Place and Legacy often put restaurants side by side under one roof, each with its own hood and make-up air arrangement. When one tenant remodels, the airflow balance for the neighbors shifts. We measure before and after, set the make-up air so the dining room is comfortable at the door, and give landlords a record of which tenant's equipment serves which space. Each tenant gets its own record, and the landlord gets the combined picture, which keeps remodels from quietly breaking the neighbors' ventilation.
Growing office and retail development around the Tustin Legacy and Market Place corridors.
How kitchen ventilation & make-up air work plays out in Tustin
Walk into a restaurant at The District or The Market Place on a busy night and the quality of the kitchen ventilation shows up immediately in the dining room: if the front door is hard to pull open or the dining room smells like the fryer, the exhaust and make-up air are out of balance. These are newer buildings with proper hood systems and dedicated make-up air units, and the imbalance usually comes from a change made after opening, such as a hood fan replaced with a larger one, a make-up air damper that stuck, or a tenant who turned off the MAU because it was blowing warm air on the line.
Old Town is different. Restaurants there operate in buildings that predate modern kitchen ventilation codes, and many have been through several ownership changes with hoods, fans and make-up air added piecemeal. Exhaust fans on those roofs are frequently undersized, belt-driven and overdue for bearings, and some kitchens have no dedicated make-up air at all, pulling conditioned air out of the dining room and across the customers.
Our work covers the mechanical side of the system: exhaust fan motors, belts, bearings and curbs; make-up air unit burners, filters, dampers and controls; interlocks between hood, fan and MAU; and air balance so the kitchen holds slight negative pressure without starving the dining room. Hood and duct cleaning is a separate trade. A rebalance is often the fix for a dining room that is too hot in summer, because the rooftop unit cannot keep up when it is fighting an unbalanced exhaust. The restaurants page explains how this fits into a full kitchen program.
Tustin's climate and what it does to this equipment
Tustin is warm central basin with moderate humidity; less coastal influence than Costa Mesa or Newport Beach, so heat and dust matter more than salt.
For the equipment background behind this page, read our kitchen ventilation and make-up air guide or the full Kitchen Ventilation & Make-Up Air service page.
- Tustin LegacyNewer retail, restaurant, office, and mixed-use development.
- The Market PlaceLarge retail and restaurant tenants with high refrigeration and RTU loads.
- Old Town Tustin and Newport AvenueOlder small commercial buildings and professional offices.
- Red Hill and Edinger corridorsMedical office, retail, and light-industrial users.
- Make-up air unit service, repair, and replacement
- Exhaust fan belts, motors, and airflow verification
- Kitchen-to-dining pressure balance so doors and hoods behave
- Documented readings, not guesses, on airflow and temperature
What a kitchen ventilation & make-up air visit includes, and the problems we most often find
- Walk the kitchen during or near service to see what the building actually does
- Measure exhaust and make-up airflow, temperatures, and building pressure
- Inspect fans, belts, motors, dampers, burners, and controls
- Repair or adjust, then re-measure to confirm the balance
- Document results and flag items for the hood-cleaning and fire-protection vendors to handle
- Make-up air that is undersized or off, pulling conditioned air from the dining room
- Exhaust fan belts and bearings worn, cutting airflow below what the hood needs
- Kitchens running negative, causing hard-to-open doors, drafts, and burner issues
- Make-up air units with failed burners or controls during cold or hot weather
Kitchen Ventilation & Make-Up Air in Tustin: questions we get
Our dining room at Tustin Legacy is warm every summer evening even though the RTU was just serviced. Could it be the kitchen?
Very likely. If the kitchen exhaust is pulling more air than the make-up air unit supplies, the deficit comes from the dining room, and the rooftop unit's cooling goes straight up the hood. We measure the exhaust and make-up air flows, check whether the MAU is actually running when the hood is on, and rebalance. The result is a cooler dining room with the same RTU.
Our Old Town restaurant has no make-up air unit. Is adding one realistic in an older building?
Often yes, though the building's roof structure and available gas and electrical capacity decide the approach. We evaluate the hood exhaust rate, the space, and the structure, then propose an MAU that balances the kitchen without a major remodel. Permitting runs through the City of Tustin, and we confirm current code requirements for the specific configuration before anything is ordered.
Do you clean hoods and ducts?
No. Hood and duct cleaning is a separate specialty. We handle the mechanical side: exhaust fans, make-up air, and HVAC balance.
Why is my dining room hot when the kitchen is running?
Often the make-up air is not matched to the exhaust, so the kitchen pulls conditioned air from the dining room. Measuring airflow and pressure shows where the balance is off.
Can you replace a make-up air unit?
Yes. We size to the hood's exhaust requirement, coordinate permits, and handle rigging and controls.