Kitchen Exhaust — Frequently Asked Questions

Question 1

How do I add Demand Control Ventilation to an existing kitchen hood?

Accepted Answer

To retrofit Demand Control Ventilation (DCV), you must install optic smoke sensors and temperature probes inside the existing canopy, and connect them to a new VFD wired to the Exhaust Air Unit (EAU). The system will automatically modulate the fan speed based on real-time cooking loads.

Question 2

Can I add a wet scrubber to an existing dry kitchen exhaust system?

Accepted Answer

Adding a wet scrubber (Ecology Unit) requires evaluating the existing ductwork and fan static pressure. Wet scrubbers induce a significantly higher pressure drop than dry ESPs, typically requiring the exhaust fan to be upsized or the motor replaced to handle the new aerodynamic resistance.

Engineering Airflow

Engineering Airflow

Engineering Airflow

Kitchen Exhaust FAQ

How do I add Demand Control Ventilation to an existing kitchen hood?

Can I add a wet scrubber to an existing dry kitchen exhaust system?