Quest Supply and Return Duct Kit - Quest 225, 205, 200, and 155 M-CORR

Supply and Return Duct Kit for Quest 225, 205, 200, 155 M-CoRR Units

A Quest Supply and Return Duct Kit ducts both sides of a compatible dehumidifier's airflow in one package: a supply flange for discharging dehumidified air to a specific point in the room, and a return collar for pulling air back into the unit from a separate location. Running both sides through ductwork lets installers separate the intake and discharge points instead of having both at the unit itself.

This kit is sized for the Quest 225, 205, 200, and 155 M-CoRR models, covering both supply and return connections for a fully ducted installation.

Key Features & Benefits

• Supply flange and return collar in one kit — covers both sides of the airflow loop, so installers don't need to buy the supply and return kits separately when both are needed.
• Complete mounting hardware — fasteners and gasketing for both connections are included, reducing the parts list for a full ducted installation.
• Separates intake and discharge points — letting the return pull from one location and the supply discharge to another helps even out humidity control across larger or oddly shaped rooms.
• Model-specific fit — flange and collar dimensions are matched to the compatible unit series for a clean installation without field modification.
• Simplifies full ducted installations — one kit number covers both connections, which cuts down on order complexity for installers setting up a fully ducted system.

Who Should Use This

This kit is for growers and facility installers running a compatible Quest dehumidifier as a fully ducted system, with both supply and return air routed to separate points in the room rather than both occurring at the unit's own location.

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's included in the Supply and Return Duct Kit?

The kit includes both a supply air flange and a return air flange, each with a matching duct collar, plus the mounting hardware needed to complete both connections. It covers the full airflow loop rather than just one side.

When would I need both the supply and return kit instead of just one side?

That depends on the installation. Some setups only need supply air ducted to a specific point while return air is pulled from the unit's immediate surroundings, in which case a supply-only kit is enough; a fully ducted system routing both sides needs this combined kit.

Which Quest models is this kit compatible with?

This kit is compatible with the Quest 225, 205, 200, and 155 M-CoRR models. Confirm your exact model and voltage variant against the current compatibility list before ordering, since flange dimensions vary across Quest's model lines.

Does this kit include the ductwork itself?

No, the kit provides the flanges, collars, and connecting hardware at the unit end for both supply and return. Ductwork and any additional fittings needed to reach both the discharge and return points are sourced separately.