Best Humidifiers & Dehumidifier on Sale

Anyone dealing with a damp basement or musty spare room will get solid use out of this, since it covers up to 950 square feet on a single tank fill. It's priced at $67.79, about $8 off the $75.89 list price at Walmart. Buy Now at Walmart

Basements and damp bedrooms are where this one earns its keep, pulling 52 pints a day to keep humidity in check without constantly emptying the tank. It's priced $10 below the $160 list right now. Buy Now at Amazon

Basement and crawl space owners dealing with persistent damp air will get the most out of this, since 80 pints of daily capacity can handle larger or more humid spaces without constant tank emptying, and the Energy Star rating keeps it from spiking your electric bill. Buy Now at Amazon

Anyone whose humidifier stopped responding to its controls despite an otherwise working tank and fan probably has a fried board rather than a dead unit, and this replacement part gets you back to normal function without buying a whole new machine. Buy Now at Newegg

A compact dehumidifier sized for smaller spaces like bathrooms, closets, or bedrooms up to 500 square feet, currently priced at $32, which is about $5 off the $37 list price. Buy Now at Walmart

Bedrooms and small offices benefit most from this, since 3L is enough to run through a full night without needing a refill. At $26, it's $14 off the $40 list price, sold through Amazon. Buy Now at Amazon

Small spaces like closets, bathrooms, or RVs benefit most from a compact dehumidifier like this one, since it pulls moisture from the air without needing a drain hose or outlet nearby. Amazon has it for $37, which is $13 off the $50 list price. Buy Now at Amazon

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

Handy for bedrooms or offices where dry air is an issue, this ultrasonic humidifier runs quiet enough not to disrupt sleep, and at $33.98 it's essentially at list price with no real discount to speak of. Buy Now at Amazon

This dehumidifier suits damp basements or bathrooms up to around 1,500 square feet, pulling moisture out of the air to cut down on mustiness and mold risk. It's $19 (8%) off the $229 list price at Amazon. Buy Now at Amazon

Anyone running into a dead or glitchy humidifier control panel can swap in this board without replacing the whole unit, which saves you the cost of a new humidifier over a simple part repair. Buy Now at Newegg

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

Crawl spaces and basements prone to moisture benefit most, since this unit is built to run continuously in tight, damp areas without needing constant emptying. At $486.49, that's about $32 off the $518.93 list price. Buy Now at Walmart

Basements and other damp spaces up to around 4,500 square feet are what this 70-pint capacity is built for, pulling moisture out faster than smaller units can manage. It's $95 off the $200 list price, putting it at just over half of what you'd normally pay. Buy Now at Walmart

Basement and garage owners dealing with damp air will get the most out of this one, since 70 pints a day covers larger, more humid spaces without constant emptying thanks to the continuous drain option. Buy Now at Walmart

This small-capacity humidifier suits a desk or nightstand rather than a whole room, adding a bit of moisture to the air right where you're sitting or sleeping. At $12.49, that's $1.50 off the $13.99 list price. Buy Now at Walmart

Small spaces with musty odors or window condensation benefit most from this size, since it's built for rooms up to 1,000 square feet rather than whole basements. Walmart has it for $40.99, a $15 drop from the $55.99 list price. Buy Now at Walmart

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

Basement or laundry-room dampness in spaces up to 500 square feet is what this one's built for, with a 50-ounce tank that won't need constant emptying, and it's currently $5 off the $46 list price at Walmart. Buy Now at Walmart