8 Best Whole House Humidifiers

Key Specs

• Dimensions: 20.5 x 21.5 x 14.5 inches
• Weight: 13.5 pounds
• Capacity: 3.6 gallons
• Auto Shutoff: Yes
• Square Footage Covered: 3,600

This portable model from Aircare features four rolling casters, and combined with its light 13.5-pound weight, is easy to transport from room to room. If you don’t feel like moving it around much, or just want to place it on a table, you can remove these casters altogether.

The digital humidistat ensures that the unit will constantly adjust to your preferred humidity level, and the control panel is straightforward and easy to use. The 3.6-gallon water tank is somewhat small compared to the other models on our list, but if your priority is portability, it could be worth the added refilling time.

Key Specs

• Dimensions: 13.75 x 24 x 22.75 inches
• Weight: 29.5 pounds
• Capacity: 5 gallons
• Auto Shutoff: Yes
• Square Footage Covered: 4,000

If you’re looking for the portability and convenience of a standalone humidifier, with the coverage of a furnace-mounted option, this could be a great fit. It’s able to handle homes up to 4,000 square feet, and the convenient water level indicator ensures that you won’t have to worry about unexpected refills. A digital humidistat also keeps it operating at the precise humidity you set.

The five-gallon capacity is high compared to other standalone units, and it can operate for up to 55 hours on a single fill. Although the oak finish is artificial, it does allow this humidifier to potentially blend in a bit more than a black or white model.