Makeup Air Unit Sizing Calculator

Size makeup air units for commercial kitchen and exhaust applications.

Total CFM being exhausted from space.
CFM
Winter outdoor design temperature.
°F
Target temperature for makeup air.
°F

Results

Makeup Air Unit CFM-CFM
Required Heating Capacity-MBH
Gas Input (80% efficient)-MBH
References: ASHRAE Handbook - HVAC Applications, Chapter 35 (Kitchen Ventilation)