Quest 335 Pint Per Day Dehumidifier – 208/230V

By

Quest

In stock
Model

QU12521

ID

199391

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Product Features
  • Removes up to 345 pints of moisture daily
  • Energy-efficient design lowers operating costs
  • Overhead installation saves valuable floor space
  • Corrosion-resistant construction ensures long-lasting performance

The Quest 335 is a powerful and compact overhead dehumidifier engineered to manage excess humidity in basements, grow rooms, crawl spaces, and other moisture-prone areas. With a capacity of 345 pints per day, it ensures a dry, healthy environment in both residential and commercial settings.

High Efficiency

The Quest 335 stands out as an ideal solution for commercial and agricultural environments due to its exceptional efficiency. Utilizing innovative M-CoRR Technology, this dehumidifier incorporates a patented multi-coil design for unparalleled performance. It features a highly effective MERV-13 filter and an eco-friendly R454B refrigerant, making it one of the most efficient and environmentally responsible dehumidifiers on the market.

Versatile Applications

Designed to adapt to a variety of environments, the Quest 335 offers reliable performance across multiple industries and settings:

  • Installation Flexibility: The unit can be used freestanding with a corrosion-resistant base or suspended overhead to save valuable floor space.
  • Industry Usage: Perfect for agriculture, distribution, food and beverage, manufacturing, science and technology, and sports industries.
  • Operation Range: Optimally operates in a temperature range of 56°F to 95°F, ensuring consistent performance across diverse conditions.

Get Started Right Away

The Quest 335 is ready for immediate operation with its convenient plug-in design and 10-foot power cord. Simply connect to a 208-230V outlet with a 6-15P plug type and start controlling moisture levels effectively, whether placed overhead or on the floor.

Bonus Features

  • Safety Certified: UL rated, ETL listed, and compliant with California Title 24 for both ducted and non-ducted installations.
  • Advanced Control Panel: Features a user-friendly electronic digital display, built-in diagnostics, low light ""Dark Mode,"" and a humidistat for precise humidity management.
  • Drain Hose Included: Comes complete with a drain hose for easy water removal.
  • Automatic Defrost: Built-in automatic defrost ensures efficient operation in varying temperatures.

Warranty

The Quest 335 is backed by a robust 5-year warranty, including a 1-year overall warranty and a 4-year parts warranty covering the condenser, evaporator, and compressor, providing long-term peace of mind.

More Information
Quest 335 Pint Per Day Dehumidifier – 208/230V
FeatureSpec
SKUQU12521
Weight (in lbs)215.000000
Brand/ManufacturerQuest
Additional InformationAuto-Restart
Additional InformationNumber of Fan Speeds: 3
Additional InformationEnergy Factor: 4.4 L/kWh
Additional InformationCertification: UL
Heating BTU15,700
Maximum CFM900 CFM
RefrigerantR454B
Capacity345 pints
Wattage1700 W
Max Breaker Size7.9 Amps / 6.9 Amps
Height23.7"
Width24.6"
Depth32.9"
Pint Capacity200+
UsageDucted, Gyms/Fitness Centers, Indoor Growing/Greenhouses, Kennels/Stables, Warehouses
Additional InfoCabinet Width: 24.6"
Warranty5-Year Limited Warranty
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
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Customer Questions
Who Makes Quest?
Quest dehumidifiers are proudly manufactured in the United States, specifically in Madison, Wisconsin. This is the home base of Therma-Stor LLC, the company behind the Quest brand. Therma-Stor has built a strong reputation in the HVAC and indoor air quality industries for producing high-performance, durable, and energy-efficient dehumidification systems.
Is installation difficult or do I need a professional?
While many Quest units are plug-and-play, larger models or those requiring overhead mounting may need a professional HVAC technician for safe and proper installation.
How do I know which Quest dehumidifier model is right for my space?
Start by measuring the square footage and ceiling height of your space. Then, consider moisture levels and how often the area is in use. Quest offers models with capacities ranging from around 70 to over 500 pints per day, so there’s an option for everything from small grow rooms to large industrial spaces.
What kind of maintenance is required?
Routine maintenance includes checking and replacing filters regularly, inspecting drainage lines, and cleaning the coils periodically. Most users find the upkeep simple and manageable.
How often do I need to clean or change the filter?
Most customers check the filter every 1–3 months. Depending on dust levels and usage, you may need to clean or replace it quarterly.
What is the warranty on Quest dehumidifiers?
Quest dehumidifiers come with a 5-year warranty on parts and refrigerant system components, offering long-term reliability and peace of mind.
How noisy are Quest dehumidifiers?
Noise levels vary by model, but most units are quiet enough for use in occupied commercial spaces. For grow rooms and workspaces, the sound is often comparable to a running HVAC system.
Can I run the dehumidifier continuously?
Yes, most Quest dehumidifiers are built for continuous operation. They include features like automatic defrost and humidity set points to maintain consistent performance without constant supervision.
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