How To Actually Size A Dehumidifier For Your Grow Room

Most growers size their dehumidifiers off square footage or plant count. Elliott Gorfain, Head Consultant at Green Thumb Depot, explains why neither number matters, and what to measure instead. The short version: your plants evapotranspirate roughly 97% of every gallon you irrigate, so your daily irrigation volume is the figure that actually sets your capacity. He walks through the full calculation, what to subtract, why HVAC gets left out, and why "pints per day" alone will leave you short the moment the lights go off. CHAPTERS 0:00 Why square footage and plant count don't work 0:30 What actually matters: your daily irrigation 1:00 Drain to waste: subtract 10 to 15% 2:00 Plant metabolism: subtract another 3% 2:30 Why HVAC stays out of the calculation 3:25 What increases the load: sealed rooms and door traffic 4:45 Why "pints per day" isn't good enough 5:30 Lights off: the danger zone 7:00 The 25 to 30% extra capacity standard 7:10 Sunsetting your lights 7:45 Pre-drying with your setpoints ▶️ Watch the full episode: [EP03 FULL EPISODE LINK] 🔔 Subscribe for more commercial grow tips from the Growers MBA podcast. Need help sizing a room? Talk to us and we'll run the numbers with you, plus get you the best pricing and rebates on the equipment. What should Elliott break down next? #GrowersMBA #IndoorGrowing #Dehumidification #ControlledEnvironmentAg #CommercialGrowing