Anden Dehumidifiers

Anden Dehumidifiers: Hangable Portables Sized by Light Count

Anden is the grow-optimized portable line from Therma-Stor, the parent company behind Quest commercial units. Where Quest leans toward floor-standing ducted installs, Anden was designed for growers who need a unit that hangs from ceiling joists or unistrut, runs without ductwork, and is sized in steps that map cleanly to room light counts. The lineup covers 70 to 710 pints per day across 115V and 240V circuits, with the V3 platform updating the A320 and A710 to newer EPA-compliant refrigerants and a redesigned control board.

Anden Sizing Chart by Model

V1 vs V3: What Actually Changed

Capacity is identical between V1 and V3 platforms. The A320 and A710 both rate at their respective pints-per-day numbers on either generation. Three things did change with V3:

• EPA-compliant refrigerant: V3 uses the newer refrigerant blend mandated by current EPA SNAP rules and California Title 24, where V1 used the legacy blend.
• Redesigned control board: V3 has brighter status LEDs and a refreshed front-panel interface that is easier to read across a flower room.
• Retuned condenser geometry: V3 picks up a few points of efficiency at lower room temperatures (think dry rooms at 60 F, not flower rooms at 78 F).

For a new commercial install or a permitted California facility, V3 is the version with longer parts-support runway. V1 units are still legal to operate and are common in the secondary market, but Therma-Stor's official parts support timeline is shorter on V1.

Hangable vs Ductable: Mounting Choices by Model

Every model in this collection is hangable. The A70 and A100 can sit on the floor or hang from a single mounting point, and the A130 through A710 are designed to hang from ceiling joists or a unistrut grid using brackets shipped with the unit. None of them require permanent ductwork.

The A210, A320, and A710 accept optional duct collars if you want to mount the unit outside the grow space and duct treated air in. This is the right approach when you need to keep compressor heat out of a tightly sealed flower room, or when you want the unit serviceable from a mechanical mezzanine. For permanently ducted central returns, Quest fixed-install units from our commercial dehumidifiers tier are the better fit because they are built around the ducted use case from the start.

Running Anden Off a Room Controller

Every current Anden model accepts a 0-10V analog input from an environmental controller. With a controller driving the 0-10V signal, the dehumidifier modulates capacity proportionally instead of cycling on and off from a built-in humidistat. The result is RH held within plus or minus 2% of setpoint rather than plus or minus 5%, and noticeably longer compressor service life. This is the right way to run Anden in a VPD-managed flower room. Pair with an environmental controller that exposes a 0-10V output and a humidity setpoint per room, like the TrolMaster Hydro-X or AC Infinity Controller 75. Confirm your fans and ducting can circulate the dry air evenly across the canopy after the dehumidifier treats it.

Where Anden Fits Against Quest

Anden and Quest share Therma-Stor refrigeration engineering, so the question is rarely about which brand breaks less. Quest leans toward floor-standing, ducted commercial installs (the Quest 506 and 746 sit on a mechanical-room floor and move serious air). Anden was built around growers who need a hangable portable that runs without ductwork, sized in steps that map to room light counts. For a head-to-head with use-case recommendations, see the Quest vs Anden comparison. If you need higher capacity than the A710 in a single unit, or a fixed central system, the commercial dehumidifiers tier is the next step up.

Related Guides

• Anden Dehumidifiers: The Complete Grow-Room Buying Guide
• Quest vs Anden Dehumidifiers: Brand Comparison
• Complete Guide to Quest Dehumidifiers
• Humidity Control for Indoor Grows
• How to Lower Humidity in Your Grow Room or Tent