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Today's Hours 8am - 11pm estThe Quest 225 High-Efficiency Dehumidifier (Model 4046100) is a commercial-grade, high-performance moisture control system designed for large residential, industrial, and controlled-environment applications. It delivers strong dehumidification capacity while maintaining high energy efficiency on 208/230V electrical service.With a capacity of up to 225 pints per day, this unit is engineered for demanding environments such as warehouses, indoor agriculture, restoration projects, and other large enclosed spaces requiring consistent humidity control. It uses R454B refrigerant and Quest’s high-efficiency multi-coil system to maximize moisture removal while minimizing energy consumption and heat output.
The Quest 225 is designed for continuous operation and supports ducted or standalone installation. Its integrated controls and high airflow performance allow for stable humidity regulation across large areas, making it a widely used solution for professional-grade dehumidification applications.
The Quest 225 High-Efficiency Dehumidifier features simple and convenient control options for efficient moisture management. It includes an integrated onboard control interface for easy adjustment of humidity settings and operating modes. The unit is also compatible with external control devices such as remote humidistats and condensate pump safety switches for added installation flexibility.
The Quest 225 is backed by a dependable 5-Year Limited Warranty for long-term reliability and peace of mind. The warranty includes 1 year of coverage on parts and labor, along with extended coverage on the sealed refrigerant system components from years 2 through 5.
The Quest 225 High Efficiency Dehumidifier is a premium commercial-grade dehumidification system engineered for powerful moisture removal, exceptional energy efficiency, and reliable environmental control in demanding applications. At the core of the Quest 225 is Quest’s patented M-CoRR® multi-coil refrigeration technology, engineered to maximize moisture removal while minimizing energy consumption. With efficiency ratings reaching up to 8.9 pints per kWh, the Quest 225 delivers industry-leading performance that helps significantly reduce electricity usage compared to conventional dehumidifiers. Indoor air quality is another major advantage of the Quest 225. The system includes premium MERV-13 filtration, which helps capture airborne contaminants such as dust, pollen, mold spores, and other particulates before recirculating air throughout the environment. For simplified operation and maintenance, the Quest 225 includes onboard digital controls with self-diagnostics, auto restart functionality, integrated humidistat compatibility, and easy-access service panels. Designed and assembled in the USA, the Quest 225 is built for long-term durability and dependable commercial performance.




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