Quest 225 Dehumidifiers (16 Total)

Therma-Stor Quest Dual 225 Commercial Dehumidifiers, 225 Pints/Day, 230V (Qty: 16)

These are Quest Dual 225 commercial dehumidifiers from Therma-Stor, built in Madison, WI. The Dual 225 was the industry’s first 230V commercial dehumidifier and became a standard in sealed flower rooms, greenhouses and warehouses. Each unit removes 225 pints per day at AHAM conditions (80°F / 60% RH), or about 143 pints per day at 75°F / 50% RH. That’s enough for roughly 8–10 lights per unit in a sealed room.

Quest’s patented air-to-air heat exchanger gives these units about 6.1 pints/kWh, close to twice the efficiency of a standard dehumidifier. Each unit can sit on the floor and plug in, or hang overhead to keep floor space clear. Ducting is optional. MERV-11 filtration captures mold spores and particles down to 1 micron. Units restart on their saved settings after a power outage.

Specifications (from the nameplate and Quest’s spec sheet)

• Part #: 4035400
• Water removal: 225 pints/day at 80°F / 60% RH, or 143 pints/day at 75°F / 50% RH
• Efficiency: 6.1 pints/kWh
• Power: 220–240 VAC / 1-phase / 60 Hz
• Amps: 6.9A rated, MCA 10.0A, MOP 15A
• Wattage: 1,500W (15,500 BTU/hr total heat output)
• Plug: NEMA 6-15P
• Refrigerant: R410A, 32 oz
• Filtration: MERV-11
• Mounting: floor or overhead, with optional duct collars and condensate pump