55UD Flow-Thru Humidifier

Under-Duct Flow-Thru Humidifier with Manual Humidistat

Humidifier for Warm Air Furnaces and High-Efficiency Heating Systems

Skuttle Under Duct Humidifiers are real workhorses that perform well on heat pumps and high-efficiency heating systems. In fact, they are superior to plenum-mount flow-thrus on today’s 90-plus furnaces.

• Highest performing unit, perfect for large homes
• Easy to maintain – unique mounting frame allows easy removal from duct for cleaning and servicing
• Durable, corrosion-resistant thermoplastic cabinet helps ensure long life
• Energy efficient technology uses minimal electricity
• Great in hard water applications
• Made in the U.S.A.

Moisture Output Capacity

Temp (Warm Air Duct)	Lbs/Hour	Gal/Day
120°F	6.95	20.0
110°F	6.54	18.8
100°F	5.22	15.0

Home/Humidifier Sizing Range

Model	Tight House	Loose House
Square Feet	4,762	2,174
Cubic Feet	38,095	17,391

NOTE: Ratings and calculations are in compliance with ARI Formula 610.

Specifications

• Dimensions: 6-3/8”H x 15-1/4”W x 19-1/2”D
• Extension into Duct: 7-5/8”
• Extension below Duct: 6-3/8”
• Duct Opening: 12 x 16”
• Minimum Duct Width: 12”
• Evaporator Pad: 12 ¾”H x 10-7/8”W x 1-5/8”D
• Pad Replacement No. : A04-1725-045