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Quest 155 Dual

The Quest 155 Dual plug-n-play dehumidifiers are among the MOST energy-efficient large capacity dehumidifiers on the market today.

The Quest Duals’ horizontal configuration, patent pending dual outlet design, and insulated cabinet for quieter operation enable their exceptional performance in almost any application. These units are also optimized for low heat load, so they will continue to control humidity even when it is cool and humid outside. The Quest Duals are plug-n-play, requiring no installation. Optional condensate pump and ducting kits provide the ultimate in flexibility for the most challenging space restrictions and specialized applications. Quest 155 Dual dehumidifiers will continue to protect your structure and control the inside environment, ensuring superior indoor air quality and the comfort of its occupants year round. MERV 11 filtration is standard on these units, capturing particles (including mold spores) down to 1 micron in size.


Standard conditions are determined by the American Home Appliance Manufacturers (AHAM) and are used because capacity will vary with conditions. AHAM standard rating conditions are 80ºF and 60%RH. At these conditions, the capacity of the Quest 155 Dual is 155 pints per day.


Quest 155 Dual Specifications

Part No.: 4033090
Power: 8.0 Amps, 115V
Water Removal: 155 Pints/Day
@80°F, 60%RH
Efficiency: 7.3 Pints/kWh
Blower: 391 CFM
Operating Temp: 56°F to 95°F
W x H x D: 20″ x 22″ x 38″
Weight: 140 Lbs.



Optional Accessories

4021475 MERV 11 Filter (16”x20”x2”)
4027420 MERV 11 Filters 4-Pack
4027424 MERV 11 Filters 12-Pack
4028614 Pump Kit
4028616 Caster Kit
4028607 Supply Duct Kit (includes two 10” collars)
4026969 10” Flex Duct 25’
4022126 10” Flex Insulated Duct 25’
4028610 Return Duct Kit (includes one 12” collar)
4024750 12” Flex Duct 25’
4028366 12” Flex Insulated Duct 25’
4020175 Remote Dehumidistat


  • Industry-leading efficiency, most efficient on the market today
  • Plug-N-Play
  • Patented, optimized air-to-air heat exchanger
  • High-efficiency, long-life impeller fan
  • Quiet operation and superior high static pressure performance
  • Superior air filtration (MERV-11 standard)
  • Patent Pending Dual air distribution
  • Auto-restart after power outages
  • Environmentally friendly R410A refrigerant

Any Questions?
Call us toll free at 866-933-7486 to speak with our product experts. Or contact us here.

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