Best Humidifiers & Dehumidifier on Sale

At Amazon, get this Homvana 3.6L Top-Fill Cool Mist Humidifier for $15 when you add it to your cart and proceed to checkout. It's the best price Amazon has charged for this model. The 3.6L tank is rated to last up to 4 nights per fill, and the top-fill design uses a 5.3" opening for easier refilling and cleaning. 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

Dry winter air or a stuffy bedroom calls for something like this Dreo humidifier, which holds over a gallon so it can run through the night without needing a refill. Buy Now at Walmart

Dry winter air in bedrooms or nurseries is where a top-fill humidifier earns its keep, since you can refill it without lifting or flipping the tank, and having 10 replacement filters on hand means you won't be scrambling to reorder for a while. Amazon has this bundle for $41, about $14 off the $55 list price. Buy Now at Amazon

These small pouches pull excess moisture from closets, cabinets, or other small enclosed spaces to cut down on musty odors and mildew, a fit for anyone dealing with dampness in a specific spot rather than a whole room. At $28, that's just $2 off the $30 list price. Buy Now at Amazon

Keeping both bedrooms and offices comfortable year-round is easier when one unit handles warm mist for winter and cool mist for summer, so you're not buying two machines. At $80, it's $10 off the $90 list price. Buy Now at Amazon

Small spaces and closets prone to mustiness benefit most from this dehumidifier's compact 85-oz. tank, which you'll need to empty regularly but keeps upkeep simple. Walmart has it for $42.29, marking it down $48.70 from the $90.99 list price. Buy Now at Walmart

Homeowners with evaporative humidifiers running through filters every few months will want a backup pair ready to swap in without hunting one down mid-winter. Amazon has this 2-pack for $16.11, about $5 (23%) off the $20.99 list price. Buy Now at Amazon

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

This dehumidifier runs automatically to keep gun safes and storage cabinets free of moisture, useful for anyone protecting firearms, tools, or electronics from rust and corrosion. Amazon has it at $61.87, which is $48.12 off the $109.99 list price. Buy Now at Amazon

Handy for bedrooms or small offices where you want steady humidity without constant refilling thanks to the 3L tank, and at $30 it's $10 off the $40 list price. Buy Now at Amazon

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

Adds a bit of ambient calm to a desk or nightstand with its cloud-and-raindrop design and built-in essential oil diffuser, and it's currently $12.50 off the list price at Walmart. Buy Now at Walmart

This 2.2L ultrasonic humidifier suits bedrooms or small offices where you want quiet, consistent moisture without refilling constantly, and it's currently $8 off the $26 list price at Walmart. Buy Now at Walmart

Anyone dealing with a large room or dry winter air will get more runtime out of the 10-liter tank without constant refills, and the app control means you can adjust settings without getting up. Walmart has it for $100, which is $200 off the $300 list price. Buy Now at Walmart

Small-space damp control without a bulky unit, good for closets, bathrooms, or RVs where you just need moisture pulled from the air, currently $5 off the $46 list price at Walmart. Buy Now at Walmart

Basement and large-room dampness is what this one's built for, pulling moisture from up to 4,500 square feet. Walmart has it for $159.89, which is $140 off the $299.99 list price. Buy Now at Walmart

Basement or large-room moisture problems call for higher capacity, and this 150-pint model covers spaces where smaller units fall short, currently $139 off the $429 list price at Amazon. Buy Now at Amazon

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