506 High Efficiency Overhead Dehumidifier by Quest - 208/230V

The Quest 506 removes up to 500 pints of moisture per day at 1,150 CFM and 30,500 BTU, one of Quest's largest overhead commercial dehumidifiers, using the patented M-CoRR multi-coil refrigeration design to recycle heat pulled from the air during dehumidification and improve energy efficiency at this capacity.

This 208/230V configuration is sized for facilities running standard commercial electrical service at that voltage.

Key Features & Benefits

• 500 pints/day capacity — at 1,150 CFM and 30,500 BTU, one of Quest's largest overhead dehumidifier capacities.
• Patented M-CoRR multi-coil refrigeration — recovers and reuses heat pulled from the air during dehumidification, improving efficiency while limiting the added heat load at this capacity.
• MERV 13 filtration — strains out up to 95% of dust, mold spores, bacteria, and smoke from the incoming air.
• Overhead-mount design — engineered for ceiling installation in large commercial grow spaces to keep floor space clear.
• Compatible with Quest's Exhaust and Return/Intake Duct Kits — supports ducted exhaust and fresh-air intake configurations for large-facility ventilation designs.

Who Should Use This

The Quest 506 fits large commercial cultivation operations that need high-capacity overhead dehumidification with M-CoRR energy efficiency, one tier below the 746 and 876 in Quest's largest-capacity lineup.

About Quest

Quest is a Therma-Stor brand. It focuses on commercial dehumidification. Therma-Stor is headquartered in Madison, Wisconsin. It's the same parent company behind the Anden brand. Therma-Stor has built dehumidifiers and environmental-control equipment for decades. Quest specifically targets commercial and industrial moisture control. Think indoor cultivation, food production, and commercial buildings. That's a different focus than residential basement units. Many overhead models use the company's patented M-CoRR design. M-CoRR stands for multi-coil refrigeration. The design recycles heat pulled from the air. That happens during dehumidification itself. It improves energy efficiency as a result. It also cuts heat sent back into the room.

Frequently Asked Questions

How does the 506 compare to the Quest 335 and 746?

The 506 removes up to 500 pints/day, above the 335's 345 pints/day but below the 746's 730 pints/day, positioning it firmly in Quest's large-capacity tier. Match your selection to your facility's actual moisture load and available electrical service.

Is ducting available for exhaust and fresh-air intake on this unit?

Yes, Quest offers an Exhaust Duct Kit and a Return and Intake Duct Kit compatible with the 506, letting installers route exhaust air and fresh-air intake through ductwork rather than discharging directly at the unit. Order the specific kits listed as compatible with the 506 for your voltage configuration.

What does the MERV 13 filter on the 506 capture?

It screens out up to 95% of dust, mold spores, bacteria, and smoke from the air moving through the 506. Replace it on the manufacturer's recommended schedule to maintain rated airflow and filtration performance at this unit's higher CFM.

What electrical service does the 208/230V version require?

It's built for standard 208/230V commercial electrical service. Confirm this matches your facility's existing infrastructure before ordering, since Quest also offers this same 506 model in a 277V configuration.