Best Humidifiers & Dehumidifier on Sale

Home Depot is offering discounts of up to 50% off a wide range of dehumidifiers, from small countertop units to large commercial-grade machines. The Edendirect 50-pint dehumidifier, for example, is $170, down from $339.99. Shoppers looking for bigger spaces will also find options like the KESNOS 155-pint commercial dehumidifier at $559.99, marked down from $949.99. Shop Now at Home Depot

AlorAir is offering 12% off AlorAir basement and crawl space dehumidifiers with promo code "IMBASE12", dropping prices as low as $378. Regular prices for these units range from $429 to $1,200 depending on capacity. AlorAir has built a reputation in the crawl space encapsulation and restoration industry for commercial-grade performance at prices below contractor brands like Santa Fe and Dri-Eaz. The lineup spans compact 70-pint units for small crawl spaces up to whole-house models covering 3,300 sq. ft., with both gravity-drain and built-in pump drainage options. Free shipping applies. Coupon ends September 30.  Shop Now at AlorAir

This ToLife dehumidifier is $20 off its regular price at Amazon. You'd pay $10 more elsewhere. It covers up to 1000 sq. ft. and includes a sleep mode that runs under 30 dB for quiet overnight use. Buy Now at Amazon

This ToLife dehumidifier is 25% off its regular price of $80. The 95-oz. water tank covers up to 1,000 sq. ft. and includes an automatic shut-off when the tank is full. Shipping is free.  Buy Now at Amazon

A large-capacity humidifier like this suits bedrooms, living rooms, or any space where you want extended runtime without frequent refills, and the 12-liter tank is the main draw if you run one overnight or through the day. After factoring in the $$17 import charges, $3.07 payment processing fee, and $33.63 shipping, it's a low by $20 for a similar one at Walmart. Buy Now at Alibaba

Apply promo code "PRELUV" to get this price, which is a total of $130 off. It covers up to 1,000 square feet and removes up to 70 pints of moisture daily, with a gravity drain system for continuous use without emptying a tank. It also comes with a 5-year limited warranty.

The same code takes 5% off everything else sitewide, as well. Buy Now at Argendon

Bedrooms and larger living spaces benefit most from the 5-liter tank, since it can run overnight without needing a refill, and ultrasonic operation keeps noise to a minimum for light sleepers. Walmart has it for $39.98, about $9 off the $48.99 list price. Buy Now at Walmart

Damp basements or crawl spaces are exactly what this is built for, and the built-in pump means you can run continuous drainage without hauling a bucket. At $218.60, that's $111.39 (34%) off the $329.99 list price. Buy Now at Walmart

Update: The price has changed to $59.99 since this was originally published.

A large 6-liter tank suits bigger rooms or bedrooms where you don't want to refill the humidifier every night, and at $59.98 it's essentially priced the same as the $59.99 list price, so there's no real discount here. Buy Now at Amazon

Small spaces prone to dampness, like bathrooms or closets, benefit most from this size dehumidifier since it's built for compact areas rather than whole rooms. Walmart has it for $44.98, which is $35 off the $80 list price. Buy Now at Walmart

Basement and crawl space owners dealing with persistent dampness will get the most use out of this, since 19 pints of daily moisture removal covers larger spaces than typical portable units. Walmart has it for $126, which is $114 (48%) off the $240 list price. Buy Now at Walmart

Anyone dealing with a damp basement or musty crawl space will get more use out of this than a small closet unit, since the 800-sq.ft coverage handles a whole room rather than a single corner. Walmart has it marked down to $69 from the $300 list price, a cut of over 75%. Buy Now at Walmart

Small spaces like closets, bathrooms, or RVs benefit most from an 85-oz capacity dehumidifier like this, since it's compact enough to tuck away but still pulls a fair amount of moisture before needing a refill. Walmart has it for $42.29, which is $48.70 off the $90.99 list price. Buy Now at Walmart

Parents dealing with a stuffy-nosed baby will get the most out of this one, since it handles humidity, calming scents, and a soft nightlight without needing three separate gadgets on the nursery shelf. Buy Now at Target

For anyone dealing with a damp basement or crawl space, the built-in pump means it can drain continuously through a hose instead of you emptying a bucket every day, and this 4,500 sq ft model covers most whole-basement setups. Walmart has it at $209.90, which is $149 off the $358.90 list price. Buy Now at Walmart

Anyone dealing with dry winter air or a stuffy nursery will appreciate the 1-gallon tank, since it covers larger rooms without needing a refill every few hours. Buy Now at Home Depot

Keeping larger rooms comfortable through dry months is where this one earns its keep, since the 9-liter tank means fewer refills compared to standard humidifiers. Walmart has it for $59.99, which is $39 off the $98.99 list price. Buy Now at Walmart

Works well for larger spaces where a small tabletop unit just won't cut it, since the 5.4-gallon tank means fewer refills if you're trying to keep humidity steady through a dry winter. Buy Now at Home Depot

Small bedrooms or offices benefit most from this one, since the 0.66-gallon tank is meant for compact spaces rather than whole-room coverage, and the built-in diffuser lets you add essential oils without a separate device. Home Depot carries this size for people who want quiet, low-maintenance humidity control at a desk or bedside table. Buy Now at Home Depot