🔥 Direct-Fired Gas MAUs (100% OA Spray 70°F & Cure 140°F Cycle, Total MBH)

Direct-Fired Paint Booth MAU Calculator

Size direct-fired natural gas Make-Up Air Units (MAU / Cambridge / Rapid) for commercial automotive and industrial spray paint booths: calculate burner thermal capacity (MBH = 1.08 x CFM x ΔT heating 100% outside air from winter ambient up to 70°F during spray mode and 140°F during high-temperature bake/cure cycles), modulating gas valves, and HVAC profits.

1. Project & Operating Inputs

Booth Supply Airflow (CFM e.g. 14,000 CFM Downdraft Airflow)

Winter Design Ambient Temp (°F e.g. 10.0°F Cold Winter Design)

Customer Bid Price for Supplied & Rigged Direct-Fired MAU ($)

Maxon Line Burner, Backward-Inclined Fan, Gas Train, Plumber & Electrician ($)

2. Financial Breakdown & Yield

DIRECT-FIRED BOOTH MAUS

Turnkey Paint Booth MAU Unit Profit

Industrial Heating Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost