Quest Supply/Return Duct Kit for Quest 70

Supply and Return Duct Kit for the Quest 70 Dehumidifier

Compact dehumidifiers like the Quest 70 often serve a small, enclosed grow space, and sometimes that space isn't the same room where the unit itself is mounted. This combined duct kit handles both supply and return air in one package, attaching to the Quest 70's existing duct collars to route air to and from a separate room or space.

It's a direct fit for both the Quest 70 (PN 4033750) and the Quest 70 50-Hz variant (PN 4033810), covering both versions of this compact unit.

Key Features & Benefits

• Handles Supply and Return — one kit covers both ducting directions.
• Attaches to Existing Collars — no modification to the dehumidifier itself.
• Covers Both Quest 70 Variants — PN 4033750 and the 50-Hz PN 4033810.
• Suited to Compact Installations — built for the Quest 70's smaller footprint.

Who Should Use This Quest 70 Duct Kit

Owners of the Quest 70 or Quest 70 50-Hz dehumidifier who want to duct both supply and return air to or from a separate room or space.

About Quest

Madison, Wisconsin-based Therma-Stor LLC, which also owns sister brand Anden, builds Quest's commercial and industrial moisture-control dehumidifiers. Patented M-CoRR multi-coil technology, used across the Quest dehumidifier line, recaptures heat generated during dehumidification for indoor cultivation, food production, and other demanding facilities.

Frequently Asked Questions

What does this kit include?

It includes the fittings needed to duct both supply and return air for the Quest 70, rather than requiring two separate kits. That covers both airflow directions in one package.

Which units does it fit?

Both the Quest 70 (PN 4033750) and the Quest 70 50-Hz (PN 4033810) are covered by this kit. Both compact units share the same duct collar sizing.

How does it attach?

It connects to the duct collars already built into the Quest 70, so no modification to the dehumidifier itself is required. Installation follows a straightforward, direct-fit process.

Can I use just the supply or return portion?

Yes, you can install only the fittings you need if your setup only requires ducting in one direction. The kit still includes hardware for the second side if you decide to add it later.