Kitchen Ventilation & Make-Up Air in Pasadena, CA
Many Old Pasadena restaurants operate in historic buildings with limited roof area and tight kitchens, so exhaust fans and make-up air units are often squeezed into awkward locations. Imbalance shows up as dining rooms that feel drafty, doors that resist opening, or hoods that fail to capture. Davinci Mechanical evaluates the whole air picture: fan performance, make-up supply, and space pressure. Cleaning of hoods and ducts is a separate trade; this work is the airflow side.
Older historic buildings, a restaurant-dense Old Pasadena, and science and institutional campuses near Caltech, sitting at the foot of the San Gabriel Mountains.
How kitchen ventilation & make-up air work plays out in Pasadena
An Old Pasadena restaurant kitchen is often a compromise between a historic shell and a modern menu. The hood was installed where the ceiling structure allowed, the exhaust duct runs up through a former light well or along an alley wall, the fan sits on a roof with a dozen other tenants' equipment, and make-up air is whatever the original tenant improvement could fit. When the menu shifts to heavier cooking, the exhaust gets upsized and the make-up air does not. The dining room goes negative, the front door on Colorado Boulevard pulls hard, the room feels drafty in winter and the pilots on the range flicker.
Pasadena's heat adds a second problem. Make-up air units that are supposed to temper incoming air in summer are often running untempered because the cooling section failed or was never there, so on a 100-degree day the kitchen is receiving outdoor air at full temperature while the hood exhausts the cooled air from the dining room. Rooftop congestion on multi-tenant buildings in the old core also means exhaust discharges end up near neighboring intakes, which creates odor complaints and fouls other tenants' coils. Hotels with banquet kitchens face a different version: exhaust sized for a full event night overwhelms the make-up air on a quiet weekday.
Davinci Mechanical's kitchen ventilation and make-up air work in Pasadena is air balance: measuring exhaust at the hood, make-up air delivery, and space pressures, then correcting the fan, the make-up unit, its damper and tempering section, or the interlock between them. Hood and duct cleaning is a separate trade with its own schedule. For a restaurant owner in Old Pasadena, the result is a kitchen that holds temperature, a dining room that does not smell like the fryer, and a front door that behaves. More on the restaurant approach at restaurants.
Pasadena's climate and what it does to this equipment
Pasadena sits inland at the foot of the San Gabriel Mountains, so it runs considerably hotter than the coast, with long summers, frequent days well into the 90s and sometimes above 100, and warm evenings that give equipment little recovery time. Santa Ana wind events in fall bring dry heat and dust, and nearby wildfire smoke and ash can load filters and coils quickly. Foothill conditions also mean leaves and debris in condensers, and older buildings with limited airflow show weaknesses early in every heat wave.
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.
- Old PasadenaHistoric brick buildings with restaurants and retail, tight alleys, retrofitted mechanical systems, and roof access that varies from easy to awkward.
- Colorado Boulevard and the Playhouse DistrictHotels, entertainment venues, restaurants, and offices along the main boulevard, with heavy demand during parade and event periods.
- Caltech area and science or institutional campusesResearch buildings, labs, and institutional facilities with demanding environmental control and documentation expectations.
- Civic Center and the Huntington Hospital areaCity buildings, medical offices, and hospital-adjacent properties where clinical comfort, filtration, and scheduling are central.
- 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 Pasadena: questions we get
Our Old Pasadena restaurant has a make-up air unit with no cooling and the kitchen is unbearable in summer. What are the options?
Adding a tempering section is one: evaporative cooling is often the practical choice in Pasadena's dry summer heat, since it is far cheaper to run than refrigerated cooling and works well when humidity is low. We also check whether the exhaust fan is oversized for current cooking and whether a variable-speed hood control could reduce both exhaust and make-up volumes during slow periods. The right mix depends on the roof space and the electrical service.
The restaurant below our Playhouse District office exhausts right next to our rooftop unit intake. What can be done?
Current codes generally require minimum separation between exhaust outlets and air intakes, and the fix may be a taller discharge on their fan, a redirected outlet, or relocating one piece of equipment. The first step is measuring and documenting the situation with photos and distances. We help property managers assess the layout against current requirements and propose a solution both tenants can live with, since the landlord usually ends up coordinating it.
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.