Commercial ventilation systems
Make-up air, exhaust and general ventilation for warehouses, commercial kitchens, manufacturing space and any building where the air being removed has to be replaced by something better than whatever leaks in through the doors.
Who this is for
- Restaurants and commercial kitchens with hood exhaust and make-up air
- Warehouses and distribution centers with heat, dust or fumes to move
- Manufacturing and light industrial buildings with process exhaust
- Any building failing a ventilation requirement, or where occupants say the air is stale
- Buildings with doors that are hard to open, or that whistle — both are pressure symptoms
What we install and service
- Make-up air units — tempered outdoor air to replace what exhaust removes
- Kitchen exhaust — hoods, fans, ductwork and the make-up air that balances them
- General and process exhaust — welding, paint, fumes, dust and heat
- Supply and relief fans, roof and wall-mounted
- Destratification — moving trapped heat back down in high-bay space
- Louvres, dampers and controls, including exhaust and make-up air interlocks
- Airflow measurement and balancing
Ventilation is a balance problem before it is an equipment problem
Most of the ventilation complaints we get called about are not broken equipment. They are buildings where the air being pushed out and the air being brought in do not match.
When exhaust exceeds supply, the building goes negative. Outside air gets pulled in through every crack, door and drain trap it can find. In winter that air is cold and unconditioned; in summer it is humid. Doors get hard to open, hoods stop capturing smoke properly, gas appliances can back-draft, and the heating bill goes up for reasons nobody connects to ventilation.
When supply exceeds exhaust the building goes positive, which is usually less damaging but pushes conditioned air out through the envelope and can make doors swing.
Either way the fix starts with measurement, not equipment. We would rather find out that your existing fans are fine and badly balanced than sell you new ones.
Code and compliance
Minimum outdoor air rates for commercial occupancies are set by code and vary with use and occupancy. Both New Jersey and Pennsylvania build their mechanical codes on the International Mechanical Code, which draws its ventilation rates from ASHRAE 62.1. Kitchen exhaust also falls under fire code requirements for hood construction, clearance and suppression.
Something about the air is wrong
Stale rooms, hard doors, a kitchen that will not clear, a warehouse nobody can work in by August. All of it starts with measuring what the building is actually moving.