- Qualifies if
- A humidifier that mounts on the furnace or ductwork.
- Ranked by
- Rated room size (highest first)
- Shown
- The top 8 of 22 products in our catalog that meet the rule.
Aprilaire 800 Steam Whole-House Humidifier
Tank: 11.5 gallons per day. Run time: 0 minute. Rated for: 10300 square feet. Professional install for most homes.
Aprilaire 720 Fan Powered Evaporative Humidifier (720M)
Rated for: 6250 sq ft. Professional install for most homes.
Aprilaire Model 620 Whole House Bypass Evaporative Humidifier
Rated for: 5000 sq ft. Professional install for most homes.
Honeywell HE360D Whole House Powered Fan-Powered Humidifier (HE360D1075/U)
Rated for: 4500 sq ft. Professional install for most homes.
Aprilaire 700 Whole-House Humidifier
Tank: 18 gallons per day. Rated for: 4200 square feet. Professional install for most homes.
Aprilaire Model 700 High-Capacity Whole House Fan Powered Humidifier
Rated for: 4200 sq ft. Professional install for most homes.
Aprilaire 400 Whole-House Humidifier
Tank: 17 gallons per day. Rated for: 4000 square feet. Professional install for most homes.
Aprilaire 600 Whole-House Humidifier
Tank: 17 gallons per day. Run time: 0 minute. Rated for: 4000 square feet. Professional install for most homes.
How to choose between them
Bypass units are the simplest; fan-powered units add more moisture without a bypass duct; steam units work even with heat pumps, which run cooler air.
Installation needs a water line, a drain and a humidistat; most homeowners hire it out.
Rankings follow the rule and order stated above, using makers' published specifications and listed prices. How we research · Disclosure