# The Best Anden Dehumidifiers for Grow Rooms

> Every gallon you water comes back out of the leaves. Anden builds industrial dehumidifiers sized for exactly that job.

Canonical: https://www.enthusiastreview.com/best/best-anden-dehumidifier/
Last updated: 2026-11-05
Published: 2026-11-05
Category: Brands
Publisher: Enthusiast Review

An **Anden dehumidifier** is built for one of the toughest moisture loads indoors: a room full of thirsty plants. Anden is the indoor-agriculture brand of Research Products Corporation, the Madison, Wisconsin, company behind Aprilaire, and its grow-optimized industrial dehumidifiers are a common sight in licensed cultivation rooms and serious home grows.

The lineup is straightforward. The **A70**, **A130** and **A320** are named for the pints of water each removes per day at standard 80°F, 60% humidity conditions, so the model number tells you the size. The trick is picking the right one — and deciding whether a single big unit or several smaller ones suits your space better. Below we compare the main Anden models, show how to size one from your watering schedule, and point to alternatives from Quest and AlorAir.

## Our top picks

- **Best overall:** Anden A130 — [check price on Amazon](https://www.amazon.com/s?k=Anden%20A130%20Grow-Optimized%20Industrial%20Dehumidifier%20130%20Pints%2FDay&tag=sktiger-20)
- **Best for small grow rooms:** Anden A70 — [check price on Amazon](https://www.amazon.com/s?k=Anden%20A70%20Grow-Optimized%20Industrial%20Dehumidifier%2070%20Pints%2FDay&tag=sktiger-20)
- **Best for commercial grows:** Anden A320 — [check price on Amazon](https://www.amazon.com/s?k=Anden%20A320%20Grow-Optimized%20Industrial%20Dehumidifier%20320%20Pints%2FDay%2C%20240V&tag=sktiger-20)
- **Best alternative:** Quest Dual 155 — [check price on Amazon](https://www.amazon.com/s?k=Quest%20Dual%20155%20Dehumidifier&tag=sktiger-20)
- **Best budget alternative:** AlorAir Sentinel HDi90 — [check price on Amazon](https://www.amazon.com/dp/B0DYSWHNGL?tag=sktiger-20&linkCode=ll1)

For most single grow rooms, the **Anden A130** is the best Anden dehumidifier: it runs on a standard 120-volt circuit while handling the moisture from a substantial canopy.

## 1. Anden A130 Grow-Optimized Industrial Dehumidifier (130 Pints/Day) — Best overall

[Check price on Amazon](https://www.amazon.com/s?k=Anden%20A130%20Grow-Optimized%20Industrial%20Dehumidifier%20130%20Pints%2FDay&tag=sktiger-20)

**Pros**

- 130 pints/day at 80°F and 60% humidity
- Runs on a standard 120V circuit
- Compact, ductable cabinet
- Backed by Aprilaire's parent company

**Cons**

- Needs a drain or condensate pump
- Too much machine for a single tent

**Why we picked it:** The A130 hits the sweet spot for a dedicated grow room: enough capacity for a meaningful canopy without needing a 240-volt circuit. Its compact cabinet can sit on the floor, ride on a shelf or be ducted, which makes it flexible in rooms where floor space is precious.

**Performance:** Anden rates it at 130 pints a day at 80°F and 60% relative humidity. Like every dehumidifier, it removes less as the room gets drier and cooler, so a room held at 45% in late flower will see less than the label number. Owners commonly run two A130s rather than one larger unit for redundancy — if one fails, the room isn't left unprotected overnight.

**Worth knowing:** Plan drainage first: a gravity line to a floor drain, or a condensate pump if the unit sits below the drain point.

| Spec | Value |
| --- | --- |
| Capacity | 130 pints/day (80°F/60% RH) |
| Power | 120V |
| Drainage | Gravity drain; pump optional |
| Type | Industrial compressor, grow-optimized |
| Best for | Single grow rooms |

## 2. Anden A70 Grow-Optimized Industrial Dehumidifier (70 Pints/Day) — Best for small grow rooms

[Check price on Amazon](https://www.amazon.com/s?k=Anden%20A70%20Grow-Optimized%20Industrial%20Dehumidifier%2070%20Pints%2FDay&tag=sktiger-20)

**Pros**

- Industrial build in a small package
- Plugs into a standard outlet
- Easy to add a second unit later
- Fits small rooms and closets

**Cons**

- Undersized for big flowering rooms
- Pricier than consumer 50-pint units

**Why we picked it:** Consumer dehumidifiers often die young running nonstop in a hot, humid grow room. The A70 brings Anden's commercial-duty build to small rooms and multi-tent setups that don't need 130 pints of capacity.

**Performance:** Anden rates it at 70 pints a day at 80°F and 60% humidity. That suits a small room or a couple of tents watered with up to roughly a few gallons a day. If your canopy grows, adding a second A70 is often easier than replacing it with a bigger unit. For a single tent, see our [best dehumidifier for grow tent](https://www.enthusiastreview.com/best/best-dehumidifier-for-grow-tent/) picks instead.

| Spec | Value |
| --- | --- |
| Capacity | 70 pints/day (80°F/60% RH) |
| Power | 120V |
| Drainage | Gravity drain; pump optional |
| Type | Industrial compressor, grow-optimized |
| Best for | Small rooms, multi-tent setups |

## 3. Anden A320 Grow-Optimized Industrial Dehumidifier (320 Pints/Day, 240V) — Best for commercial grows

[Check price on Amazon](https://www.amazon.com/s?k=Anden%20A320%20Grow-Optimized%20Industrial%20Dehumidifier%20320%20Pints%2FDay%2C%20240V&tag=sktiger-20)

**Pros**

- 320 pints/day at 80°F and 60% humidity
- Replaces two or three smaller units
- Designed for ducted or ceiling-area installs
- Fewer machines to service

**Cons**

- Requires a 240V circuit
- One large unit means less redundancy

**Why we picked it:** Large flowering rooms can transpire dozens of gallons a day. The A320 is Anden's workhorse for those spaces: one machine with the capacity of several smaller ones, taking up less floor space and fewer outlets.

**Performance:** Anden rates it at 320 pints a day at 80°F and 60% humidity on a 240-volt supply, so budget for an electrician if your room lacks a dedicated circuit. Many commercial growers pair a big unit like this with a smaller one so humidity stays in check during maintenance. See how it compares with other high-capacity machines in our [best commercial dehumidifier](https://www.enthusiastreview.com/best/best-commercial-dehumidifier/) guide.

| Spec | Value |
| --- | --- |
| Capacity | 320 pints/day (80°F/60% RH) |
| Power | 240V |
| Drainage | Gravity drain; pump optional |
| Type | Industrial compressor, grow-optimized |
| Best for | Large and commercial grow rooms |

## 4. Quest Dual 155 Dehumidifier — Best alternative

[Check price on Amazon](https://www.amazon.com/s?k=Quest%20Dual%20155%20Dehumidifier&tag=sktiger-20)

**Pros**

- Long-standing grow-room favorite
- High efficiency for its class
- Ductable for flexible placement

**Cons**

- Often priced above a comparable Anden
- Needs a drain or pump

**Why we picked it:** Quest, from Therma-Stor, is Anden's most direct rival in indoor agriculture, and the Dual 155 sits just above the A130 in capacity. If you want a little more headroom than the A130 or already run Quest equipment, it's the one to compare.

**Performance:** Quest built its reputation on efficiency — more water removed per kilowatt-hour — which matters when a dehumidifier runs around the clock. Check the current spec sheet for capacity, voltage and amp draw before you plan your circuits. Our [best Quest dehumidifier](https://www.enthusiastreview.com/best/best-quest-dehumidifier/) guide covers the full lineup.

| Spec | Value |
| --- | --- |
| Capacity | 155-pint class (80°F/60% RH) |
| Type | Industrial compressor |
| Drainage | Gravity drain or pump |
| Install | Freestanding or ducted |
| Best for | Mid-size to large grow rooms |

## 5. AlorAir Sentinel HDi90 Dehumidifier — Best budget alternative

[Check price on Amazon](https://www.amazon.com/dp/B0DYSWHNGL?tag=sktiger-20&linkCode=ll1)

**Pros**

- Much lower cost than grow-specific brands
- 90 pints/day AHAM, 198 at saturation
- Auto-defrost for cool rooms
- Easy to find online

**Cons**

- Not designed specifically for grow rooms
- Gravity drain unless you add a pump

**Why we picked it:** If budget matters more than a grow-specific badge, the HDi90 covers much of the A70-to-A130 range for less. It's built for crawl spaces and basements, so it's comfortable running continuously in demanding conditions.

**Performance:** AlorAir rates it at 90 pints a day under AHAM conditions and 198 at saturation, for spaces of roughly 2,600 square feet, with defrost operation down to about 33.8°F. In a hot, humid grow room it'll run hard, so keep the filter clean. More models are in our [best AlorAir dehumidifier](https://www.enthusiastreview.com/best/best-alorair-dehumidifier/) guide.

| Spec | Value |
| --- | --- |
| Capacity | 90 pints/day (AHAM); 198 at saturation |
| Coverage | About 2,600 sq ft |
| Low-temp operation | Defrost to about 33.8°F |
| Drainage | Gravity hose or optional pump |
| Best for | Budget grow rooms |

## Grow-room moisture, by the numbers

- **~97%** — Share of the water plants take up that they release back into the air
- **8 pints** — Moisture load from every gallon of water you give your plants
- **80°F / 60%** — Conditions behind Anden's pints-per-day model numbers

That first number is why grow rooms need so much dehumidification. Plants keep only a tiny fraction of the water they drink; nearly all of it leaves through the leaves. If you water 10 gallons a day, roughly 80 pints of moisture will end up in the room's air.

## How we pick Anden dehumidifiers

We don't run a lab. We compared Anden's published capacity ratings, electrical requirements and installation guides, checked them against rivals from Quest and AlorAir, and read reviews and grower forum discussions for recurring issues such as drain clogs, coil icing in cooler lights-off periods and early failures.

We focused on the A70, A130 and A320 because their ratings are widely published and they cover most room sizes. Anden also sells other sizes; the sizing method below works for any of them.

## What to look for in an Anden dehumidifier

- **Capacity matched to your watering:** Multiply the gallons you water per day by eight to get pints of moisture, then choose a unit — or combination — rated above that.
- **The right voltage:** The A70 and A130 run on 120V; the A320 needs a 240V circuit. Check your panel before you buy.
- **Drainage you can count on:** Industrial units have no bucket. Plan a gravity drain or a condensate pump; see our [best dehumidifier with pump](https://www.enthusiastreview.com/best/best-dehumidifier-with-pump/) guide for how pumps work.
- **Redundancy:** Two smaller units often beat one large one, because a single failure won't leave the room unprotected during flower.
- **Room for the heat:** Every dehumidifier adds heat. In a sealed room, factor that into your air-conditioning load.
  - Lights-on: heat from lights plus the dehumidifier
  - Lights-off: humidity spikes as temperatures drop

## Which Anden size do you need?

Start with your watering, not your square footage. A small room packed with mature plants can put out far more moisture than a large, sparsely planted one. Use your peak watering day in late veg or flower.

| Daily watering | Moisture to remove | Anden fit |
| --- | --- | --- |
| Up to ~5 gallons | Up to ~40 pints | A70 |
| ~6–12 gallons | ~50–100 pints | A130, or two A70s |
| ~13–25 gallons | ~100–200 pints | A320, or two A130s |
| 30+ gallons | 240+ pints | Multiple A320s or a mix of sizes |

*Ratings are at 80°F and 60% humidity. In cooler, drier late-flower rooms, real capacity drops — build in headroom.*

> **Why rated pints aren't the whole story:** A dehumidifier pulls the most water from warm, very humid air. Holding a flower room at 45% means each unit removes noticeably less than its label number, so most growers size 20–30% above their calculated load. Our [dehumidifier size guide](https://www.enthusiastreview.com/guides/dehumidifier-size-guide/) explains how test conditions affect ratings.

## Installing an Anden: placement, ducting and drainage

1. **Place it where air moves.** Put the unit where circulation fans carry room air through it, not in a dead corner. Keep the intake and exhaust clear of leaves and walls.
2. **Consider getting it off the floor.** Anden sells installation accessories, and many growers mount units on shelves or overhead to save floor space. Follow the manual for your model's approved mounting methods.
3. **Duct if it helps.** Ducting lets the unit sit outside the canopy or serve a room from an adjacent space.
4. **Run the drain downhill.** Use a gravity line with a steady slope to a floor drain, or install a condensate pump if the drain is higher than the unit.
5. **Use a dedicated circuit.** Industrial dehumidifiers draw a lot of current. A 240V A320 needs proper wiring by an electrician.
6. **Control by humidity, not time.** Use the unit's control or a compatible environmental controller with its sensor at canopy height.

## Anden vs. Quest vs. AlorAir

|  | Anden | Quest | AlorAir |
| --- | --- | --- | --- |
| Parent company | Research Products Corp. (Aprilaire) | Therma-Stor (Santa Fe) | AlorAir |
| Focus | Grow rooms, indoor ag | Grow rooms, commercial | Crawl spaces, restoration, grows |
| Strength | Value among grow-specific brands | Efficiency | Lowest upfront cost |
| Typical buyer | Home and commercial growers | Commercial growers | Budget-conscious growers |

For smaller setups, AC Infinity is another grow-focused brand worth a look; see our [best AC Infinity dehumidifier](https://www.enthusiastreview.com/best/best-ac-infinity-dehumidifier/) guide. Greenhouse growers should also read our [best dehumidifier for greenhouse](https://www.enthusiastreview.com/best/best-dehumidifier-for-greenhouse/) picks, since cold nights change the equation.

## The bottom line

For most single grow rooms, the **Anden A130** is the Anden to buy: 130 pints a day on a regular 120V circuit. Choose the **Anden A70** for small rooms and multi-tent setups, and the **Anden A320** for large or commercial rooms with 240V service. If you'd like to compare, the **Quest Dual 155** is the efficiency-focused rival and the **AlorAir Sentinel HDi90** is the budget route. Size from your watering, add headroom and plan your drain before the unit arrives.

## Frequently asked questions

### Who makes Anden dehumidifiers?

Anden is the indoor-agriculture brand of Research Products Corporation of Madison, Wisconsin — the same company that makes Aprilaire home comfort products.

### What size Anden dehumidifier do I need?

Multiply your peak daily watering in gallons by eight to estimate pints of moisture, then add 20–30% headroom. Up to about 40 pints suits an A70; up to about 100 an A130; larger loads an A320 or multiple units.

### Does the Anden 320 dehumidifier need 240V?

Yes. The A320 is rated at 320 pints per day and runs on a 240-volt supply, so you'll need an appropriate dedicated circuit. The A70 and A130 run on standard 120V.

### Anden A70 vs. A130: which should I buy?

The A70 suits small rooms and a few tents; the A130 suits a full grow room. If you're between sizes, two A70s add redundancy, while one A130 saves space and outlets.

### What about the Anden 210 and 710 dehumidifiers?

Anden sells additional sizes beyond the three we cover, and model names follow the same pints-per-day logic. Confirm current capacity, voltage and drainage on the manufacturer's spec sheet, then size them with the watering method above.

### Can I use an Anden dehumidifier in a grow tent?

Usually it's better outside the tent, drying the room the tent draws its air from. Industrial units are large for most tents; smaller tents are better served by the picks in our grow tent guide.

## Related guides

- [The Best Dehumidifiers for Grow Tents](https://www.enthusiastreview.com/best/best-dehumidifier-for-grow-tent/)
- [The Best Quest Dehumidifiers for Grow Rooms and Commercial Spaces](https://www.enthusiastreview.com/best/best-quest-dehumidifier/)
- [The Best Aprilaire Dehumidifiers: E070, E080, E100 and E130](https://www.enthusiastreview.com/best/best-aprilaire-dehumidifier/)
- [The Best Commercial Dehumidifiers for Restoration and Job Sites](https://www.enthusiastreview.com/best/best-commercial-dehumidifier/)
- [The Best Greenhouse Dehumidifiers](https://www.enthusiastreview.com/best/best-dehumidifier-for-greenhouse/)
- [The Best AC Infinity Dehumidifiers for Grow Tents](https://www.enthusiastreview.com/best/best-ac-infinity-dehumidifier/)

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*Enthusiast Review researches products against DOE ratings, ENERGY STAR data, manuals, CPSC recalls and owner reviews; it does not run a test lab. Amazon links are affiliate links (tag sktiger-20).*