Quest Return Duct Kit - Quest Dual 110 and 150

Return Duct Kit for Quest Dual 110 and 150 Dehumidifiers

A Quest Return Duct Kit connects a compatible dehumidifier's return air inlet to ductwork, so the unit pulls air from a specific point in the room rather than only drawing from its immediate surroundings. The kit includes the return air flange, collar, and the hardware needed to make an airtight connection.

This kit is sized for the Quest Dual 110 and Dual 150 models, letting installers duct return air from a specific point in the grow room to either unit.

Key Features & Benefits

• Return air flange — sized to mate directly with the compatible dehumidifier's return inlet for a proper ducted connection.
• Matching duct collar — accepts standard round ducting, letting installers pull return air from a specific location rather than only the space immediately around the unit.
• Full hardware set included — gaskets and fasteners ship with the kit, so nothing extra needs to be sourced to finish the connection.
• Supports zoned airflow design — ducting return air from a targeted location helps even out moisture removal across larger or irregularly shaped rooms.
• Sized to the specific unit series — collar and flange dimensions match the compatible dehumidifier line, so there's no cutting or reshaping sheet metal on site.

Who Should Use This

This kit is for growers and facility installers who need a compatible Quest dehumidifier to draw return air from a specific point in the room through ductwork, rather than relying on the unit's immediate surrounding air alone.

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 Return Duct Kit?

The kit includes the return air flange, a matching duct collar, and the hardware needed to complete an airtight connection to the dehumidifier's return inlet. There's nothing extra to buy for a standard installation.

When would I need to duct return air instead of just letting the unit pull from the room?

Ducting return air is useful when the space is large, irregularly shaped, or divided into zones where you want the dehumidifier pulling air from a specific location rather than just its immediate surroundings. It's also common when a unit is installed in a mechanical space adjacent to, rather than inside, the growing area.

Which Quest models is this Return Duct Kit compatible with?

This kit fits the Quest Dual 110 and Dual 150 models. Confirm your exact model and voltage variant against the current compatibility list before ordering, since return flange dimensions vary across Quest's model lines.

Does this kit include the ductwork itself?

The kit covers the flange, collar, and connecting hardware at the unit end only. Ductwork and any additional fittings needed to reach the return air source are sourced separately based on the installation layout.