Best Humidifiers & Dehumidifier on Sale

As one of its daily deals, Best Buy offers the Insignia 3,000-Sq. Ft. 50-Pint Portable Dehumidifier for $180. You'd pay $40 more elsewhere. Shipping is free. Buy Now at Best Buy

As one of its daily deals, Best Buy offers the Costway 8000-BTU 3-in-1 Air Cooler / Dehumidifier for $185. That's a savings of $175 and the best price we could find by $10. Shipping is free. Buy Now at Best Buy

Sized at 6 liters, this humidifier runs longer between refills than most bedroom models and connects to WiFi so you can adjust humidity levels from your phone without getting up. That's a savings of $48 off the list price via the 20% checkout discount. Buy Now at Amazon

As one of its daily deals, Best Buy offers the Insignia 3,000-Sq. Ft. 50-Pint Portable Dehumidifier for $180. That's a savings of $80. Shipping is free. Buy Now at Best Buy

Use promo code "VIPJUNETAKE8" to drop the price on this large-space humidifier. That's $61 under the cost of a factory-sealed unit. Shipping is free. A 90-day VIP Outlet warranty applies. Deal ends June 30th. Buy Now at eBay

Apply promo code "5IOJXGRM" to save a total of $74 on the Erizolt Dehumidifier from Amazon. Buy Now at Amazon

Sized for basements, crawl spaces, or other damp areas up to around 4,500 square feet, this 52-pint unit pulls a meaningful amount of moisture per day and includes a drain hose so you're not emptying a bucket manually. At $130, it's $90 below the list price. Apply coupon code "V6CT8B7L" for a savings of $90. Buy Now at Amazon

Apply promo code "YCDTU29D" to save $82. Buy Now at Amazon

Aimed at homeowners dealing with damp basements, crawl spaces, or humid rooms up to 2,000 square feet, this unit lets you monitor and adjust settings remotely through a WiFi app so you are not manually checking it. It is currently $95, down from the $200 list price. Apply coupon code "PD9U5LA9" for a savings of $105. Buy Now at Amazon

For larger spaces dealing with humidity issues like basements, crawl spaces, or post-flood drying, an 80-pint capacity unit handles serious moisture loads, and the app control lets you monitor and adjust settings without being in the room. At $153, that's $82 off the $235 list price. Apply coupon code "YCDTU29D" for a savings of $82.25. Buy Now at Amazon

We've pictured the Costway 4,500 Sq. Ft. 73-Pint Dehumidifier  is $164.99 at Best Buy. That's $28 less than other sellers charge. My Best Buy members get free shipping on all orders (it's free to join). Offer ends today. Shop Now at Best Buy

Apply coupon code "APBHWHON" for a savings of $70. Buy Now at Amazon

That's $7 less than a similar one at Amazon. Import charges of $0.65 may apply, as well as an $0.11 payment processing fee.

New Alibaba customers get free shipping; otherwise, it starts at around $8. Buy Now at Alibaba

That's $8 less than you'd pay for a similar item elsewhere. Import charges of $2.27 and a payment processing fee of 37-cents may apply.

New Alibaba customers get free shipping; otherwise, it starts at around $16. Buy Now at Alibaba

This diffuser doubles as a ambient light with a flame effect, which makes it a reasonable pick if you want something that adds soft, moving light to a room while also dispersing scent. It's currently $13, down from its $23 list price. Buy Now at Walmart

For anyone who wants to add moisture or scent to a room without spending much, this combo humidifier and oil diffuser covers both functions in one small unit. It's currently $14, down from the $21 list price. Buy Now at Walmart

Humidity is a real problem in basements, closets, and bathrooms, and these unscented refill packs are a straightforward way to keep moisture under control without constant monitoring. At $38, that's about $10 off the $48 list price for a 6-pack. Buy Now at Walmart

A 9-liter tank means fewer refills if you're running this in a larger room or overnight, and the remote lets you adjust settings without getting up. At $80, that's $120 off the $200 list price. Buy Now at Walmart

For larger rooms or open-concept spaces where you need a humidifier that can keep up, the 16-liter capacity means fewer refills and longer run times than most standard units. It's currently $14 off the list price at $123. Buy Now at Walmart