876 High Capacity Overhead Dehumidifier by Quest, M-CoRR

The Quest 876 is built for the largest commercial cultivation facilities, removing up to 876 pints of moisture per day at 1,850 CFM and 58,200 BTU on 220-240V hard-wired power. This is an industrial-scale overhead unit, not a stepped-up version of a smaller residential-adjacent model -- the hard-wire electrical requirement alone signals the commercial-only installation this unit is designed for.

It uses Quest's patented M-CoRR multi-coil refrigeration design, which recycles heat pulled from the air during dehumidification rather than dumping all of it back into the room, improving energy efficiency and cutting down on the added cooling load a unit this size would otherwise create. Dual MERV 13 filters handle particle filtration for a facility running at this scale.

Key Features & Benefits

• 876 pints/day capacity — at 1,850 CFM and 58,200 BTU, sized for the largest commercial cultivation facilities rather than mid-size grow rooms.
• 220-240V hard-wire installation — requires dedicated electrical work rather than plugging into a standard outlet, appropriate for a unit at this capacity.
• Patented M-CoRR multi-coil refrigeration — recycles heat extracted from the air during dehumidification to improve energy efficiency and reduce the heat load added back to the room.
• Dual MERV 13 filters — capture up to 95% of airborne particles across two filter positions, appropriate for the higher airflow volume this unit moves.
• Overhead installation format — designed for ceiling mounting in industrial-scale grow spaces rather than floor placement.

Who Should Use This

The Quest 876 is built for the largest commercial cultivation operations that need industrial-scale moisture removal in a single unit, with the electrical infrastructure and ceiling support to handle a hard-wired, overhead-mounted dehumidifier at this capacity.

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

What does M-CoRR technology actually do?

M-CoRR is Quest's patented multi-coil refrigeration design, which recycles heat pulled out of the air during the dehumidification process rather than releasing all of it back into the growing space. That reduces the added heat load on the room's cooling system while improving the unit's overall energy efficiency.

Why does this unit require hard-wiring instead of a standard plug?

At 220-240V and this level of capacity, the 876 draws more power than a standard outlet circuit is built for, so it's designed for hard-wired electrical installation. Plan for a licensed electrician to run dedicated service to the unit's installation location.

Why does this unit have dual MERV 13 filters instead of one?

At 1,850 CFM, the 876 moves considerably more air than Quest's smaller units, and splitting filtration across two MERV 13 filter positions keeps airflow resistance manageable at that volume rather than forcing all the air through a single filter. Both filters need to be checked and replaced on the same schedule.

How do I know if this unit is right for a small or mid-size grow room?

Its 876 pints/day capacity and hard-wired 220-240V requirement are sized for the largest commercial cultivation facilities. A smaller operation would be significantly oversized by this unit and better served by one of Quest's mid-size models instead.