Humidifier sizing calculator

Find the humidifier output you need to raise a room from its current humidity to your target and hold it there.

ft
ft
ft
°F
% RH
% RH

Every air change replaces the humid air with dry outside air, so exhaust is the biggest driver of humidifier size.

0liters per hour

Pints per day
Gallons per day
Room volume
Moisture gap
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