The right Anden dehumidifier comes down to room size and the voltage you can run. Tents and 4x4 hobby rooms land on the
A70 or
A100 on 115V. One-light sealed rooms step up to the
A130. Multi-light flower rooms run the
A320 V3, and dedicated dry rooms run the
A710 V3. For sizing math by canopy density and stage, see the
Anden buying guide and the pillar on
humidity control for indoor grows.
Anden line-up at a glance
The 115V tier starts with the
Anden A70, rated at 70 pints per day and sized for closets, single 4x4 tents, and small dry spaces. The
Anden A100 jumps to 100 PPD, the workhorse for 4x4 to 5x5 tents and small bedroom conversions. The
Anden A130 tops the 115V tier at 130 PPD, sized for one-light sealed rooms in the 40 to 65 sq ft range.
The 240V commercial tier opens with the
Anden A210 V1 at 210 PPD, the first Anden that requires a dedicated 240V circuit. It suits two-light flower rooms or larger veg spaces. The
Anden A320 V1 sits at 320 PPD on the legacy platform, still common in mid-sized commercial rooms. The
Anden A320 V3 matches that 320 PPD on the updated platform, with the EPA-compliant refrigerant blend, a redesigned control board, and retuned condenser geometry for better efficiency at lower room temps.
At the top, the
Anden A710 V1 and
Anden A710 V3 both deliver 710 PPD on 240V, the largest portable Anden in the catalog. These handle multi-light flower rooms and dedicated dry rooms. Capacity ratings are unchanged between V1 and V3, but V3 has a longer parts-support runway for new buyers. Anden also sells steam humidifiers for cool, dry winter rooms: the
AS35FP covers medium spaces, and the
AS150 handles high-capacity needs.
Anden vs 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 Dual and 506 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.
Frequently Asked Questions
Who makes Anden dehumidifiers?
Anden is manufactured by Therma-Stor in Madison, Wisconsin, the same parent company that owns Aprilaire (whole-home humidity control) and Quest (industrial dehumidifiers). Anden is Therma-Stor's grow-optimized portable line, engineered for tents and sealed cultivation rooms rather than ducted commercial installs. Therma-Stor has built commercial dehumidification equipment since the 1970s.
Are Anden and Quest the same?
Same parent (Therma-Stor), same core refrigeration engineering, different product positioning. Quest serves commercial fixed installs with floor-standing units that often integrate with ducted central return. Anden is portable, hangs from the ceiling, and is sized in steps that map cleanly to grow-room light counts: the A130 covers one light, the A320 covers three to four lights, and the A710 covers multi-room or dedicated dry rooms.
Which Anden dehumidifier do I need for a 4x8 tent?
A 4x8 tent covers 32 sq ft of canopy. At peak flower transpiration (4 to 6 pints per sq ft per day), the room needs roughly 130 to 190 PPD. The Anden A130 covers that on a 115V circuit if you size it close, but most growers step up to the A210 V1 on 240V for headroom against summer heat loads or lights-out condensation spikes. The A100 is undersized for a 4x8 in flower.
What is the difference between the A320 V1 and V3?
Capacity is identical: both rate at 320 PPD on a 240V circuit. The V3 platform updates three things. First, the refrigerant moved to the newer EPA-compliant blend. Second, the control board was redesigned with brighter status LEDs and a refreshed interface. Third, the condenser tube layout was retuned for slightly better efficiency at lower room temperatures. For new buyers, V3 is the version with longer parts-support runway.
How long do Anden dehumidifiers last?
Therma-Stor builds Anden compressors and refrigeration loops to the same standard as Quest commercial units, so a properly sized and maintained Anden routinely runs eight to ten years in cultivation use. The two biggest service-life factors are correct sizing (an undersized unit runs near 100% duty cycle and wears the compressor faster) and clean filtration. The MERV-11 pleated filter on the intake should be rinsed every two to four weeks during flower.
Are Anden dehumidifiers Title 24 compliant?
The V3 platform models use refrigerants and component efficiencies that meet current California Title 24 and federal DOE rules for dehumidifier efficiency. Therma-Stor publishes AHAM-rated energy factors on each model's spec sheet, and the A320 V3 and A710 V3 are the platform versions to buy if you are sourcing equipment for a California-permitted commercial facility. The V1 units are still legal to operate but are not the right pick for a new permitted install.
Does Anden make a portable unit?
Yes. The entire Anden lineup is portable in the cultivation sense: the A70 and A100 can sit on the floor or hang, 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, although the A210, A320, and A710 accept optional duct collars if you want to mount the unit outside the grow space. For long ducted runs, a Quest fixed-install unit is the better fit.
Can I connect an Anden to 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.
Related guides
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