The Best Dehumidifiers for Mold and Mildew
Mold needs moisture, so the fix is holding humidity below the point where it can grow, all the time. We scored units on capacity and continuous drainage, the two things that keep humidity down day and night.
Disclosure: My Best Dehumidifier earns a commission when you buy through links on this page. It never costs you anything extra, and it does not change how we score.
The short version
For Best overall, the hOmeLabs 50 Pint with Pump for continuous, hands off drying.
For Best mid size, the hOmeLabs 40 Pint with Pump.
For Best efficient, the AEOCKY 80 Pint Energy Star.
Our picks
The best dehumidifiers at a glance
The reviews
Best Dehumidifiers for Mold and Mildew, ranked
hOmeLabs 50 Pint with Pump
Pump keeps it running dry
This is the one I hand most people who have real moisture to fight. The built in pump means it can push water up and out continuously, so you are not carrying a full tank up the basement stairs twice a day. Add nearly 29,000 owner reviews and it is the safest big buy on this list.
What we liked
- Built in pump drains up and out, no bucket runs
- Clears up to 7,500 sq ft of damp space
- Almost 29,000 owner reviews behind it
- Simple dial and auto restart after power cuts
Worth knowing
- Larger footprint than a small room needs
- Pump models cost a little more up front
Price and availability update on Amazon
hOmeLabs 40 Pint with Pump
Continuous pump drainage
A middle sized pump unit for people who want continuous drainage without going all the way to the 50 pint frame. Good for a mid size basement or a home with a persistent damp problem on one floor.
What we liked
- Pump drains continuously up and out
- 6,000 sq ft coverage
- Backed by 28,000 plus reviews
- Auto humidity setting holds a target
Worth knowing
- Overkill for a single small room
- Pump adds a little running noise
Price and availability update on Amazon
AEOCKY 80 Pint Energy Star
Energy Star for all season use
The efficiency pick a size down. Energy Star rated, 80 pints a day, and priced under the 105 pint model, it is the sweet spot when you want low running cost for a normal large room or basement.
What we liked
- Energy Star efficiency at a lower price
- 80 pints a day of removal
- 4,500 sq ft coverage
- Quieter than older compressor units
Worth knowing
- Still a large frame for tight spaces
- Review base is growing, not huge yet
Price and availability update on Amazon
Trazico 45 Pint
Big coverage for $199
The budget basement pick. Marketed for basements at 4,000 sq ft with a drain hose, and priced at $199, it covers a lot of damp space for the money if you do not need a pump.
What we liked
- Large 4,000 sq ft coverage for $199
- Drain hose included
- 45 pints a day of capacity
- Holds a set humidity level
Worth knowing
- Smaller brand, growing review base
- No pump, needs a gravity drain
Price and availability update on Amazon
Side by side
Full comparison
| Dehumidifier | Score | Capacity | Coverage | Rating | Price | |
|---|---|---|---|---|---|---|
hOmeLabs 50 Pint with Pump Best Overall | 91 | 50 DOE (120 max) | 7,500 sq ft | 4.5 (28,673) | $310 | Amazon › |
hOmeLabs 40 Pint with Pump Best Mid Size | 90 | 40 DOE (104 max) | 6,000 sq ft | 4.5 (28,666) | $320 | Amazon › |
AEOCKY 80 Pint Energy Star Best Efficient | 81 | up to 80 pint | 4,500 sq ft | 4.4 (5,855) | $250 | Amazon › |
Trazico 45 Pint Best Budget | 73 | 45 (max) | 4,000 sq ft | 4.5 (284) | $199 | Amazon › |
About the pint numbers: capacity ratings on this page mix two standards. hOmeLabs lists DOE test pints, measured at cooler standard conditions, while AEOCKY, DECIUU and Trazico headline max condition pints measured at 95°F and 90 percent humidity. A max rating runs roughly two to two and a half times the DOE figure for the same machine, so the table marks each number to let you compare like with like.
Our method
How we score
Every dehumidifier runs through the same scorecard, so the numbers mean the same thing across brands. I weight what owners feel day to day, then roll it into one score out of 100. Capacity and coverage carry the most weight, because a unit too small for the space never wins however nice it looks. I set scores before checking prices. Capacity figures follow each manufacturer listing, and where a maker publishes only a peak number we show it as "up to", so weigh capacity alongside coverage rather than on its own.
Buying guide
How to choose the right one
Hold humidity low, continuously
The whole game with mold is keeping moisture below the growth threshold at all times, not just when you remember to switch a unit on. That means enough capacity for the space plus continuous drainage so it never stops for a full tank.
Size up and drain out
Pick a unit with headroom on capacity and set it to hold around 50 percent. Pair it with a pump or hose so it runs unattended, and you remove the conditions mold needs to return.
Key numbers
Dehumidifier facts and stats worth citing
The numbers below put the picks in context. Each one names its source, so you can quote it, check it, or use it to size your own setup.
How quickly mold can begin growing on a surface that stays damp, which is why standing moisture needs attention fast.
Source: US EPA and FEMA guidanceThe indoor relative humidity range the EPA recommends. Above 60 percent, conditions start favoring mold and dust mites.
Source: US EPAThe share of US basements with a moisture problem, by a widely cited American Society of Home Inspectors estimate.
Source: ASHIThe temperature the DOE has tested capacity at since 2019, down from 80°F. That change is why a unit sold as 50 pints today matches what older listings called 70 pints.
Source: US Department of EnergyThe humidity level cited for keeping dust mites, one of the most common indoor allergens, in check.
Source: US EPAQuick questions
Dehumidifier FAQ
What humidity level stops mold?
Will a dehumidifier remove existing mold?
Should I get a pump or a drain hose?
Keep reading
More dehumidifier guides
Dan Mercer
I run My Best Dehumidifier and score every unit on one consistent scorecard: capacity, coverage, drainage, owner rating and value. I do not sell dehumidifiers and no brand owns any part of this site. Scores are set before prices are checked, so a good deal never buys a better ranking. More about how this site works.