AprilAire 400 Water Saver Evaporative Humidifier
Efficiency: Up to 17 gallons/day with water-saving reservoir
Quiet Level: Silent Operation
Comfort Features: Recirculating Water Technology + Onboard Sensor
The AprilAire 400 Water Saver Evaporative Humidifier delivers whole-house comfort with eco-conscious performance. Designed to use all the water it takes in, it’s ideal for homeowners looking to maintain indoor air quality while minimizing water waste.
Description
Standard Features
Up to 17 gallons per day humidification capacity
Water-saving evaporative design—uses nearly 100% of water via reservoir recirculation
Automatic digital humidifier control with onboard sensor
No white dust or residue
Made in the U.S.A. by AprilAire
10-year limited warranty on parts¹
Optional Features
Optional professional installation available
¹ To the original owner, a 10-year parts limited warranty is available when the humidifier is installed by a licensed HVAC contractor and maintained according to manufacturer instructions. See warranty certificate for complete details.
Specifications
Efficiency
Humidification output: Up to 17 gallons per day
Water-saving design captures and recycles excess water
Covers tightly built homes up to 5,000 sq. ft.
Performance
Recirculating water system saves water and utility costs
Onboard sensor activates humidifier when humidity drops below target
Technology
Water Saver evaporative humidification
Automatic digital control with high-contrast screen
Recommended control: AprilAire Model 60 Digital Humidistat
Capacities
Ideal for medium to large homes
Humidification capacity: Up to 17 gallons/day
Requirements
24 VAC transformer (included)
Ducted HVAC system
Aesthetics
Durable molded plastic casing
Duct-mounted, compact design
Actual dimensions: 15.75”H x 10.25”W x 15.375”D
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