Aprilaire 350 Humidifier

The Aprilaire Model 350 Humidifier is designed specifically for homes with radiators or baseboard heating systems. The Model 350 is a completely self-contained unit that's designed to be hung from the floor joists in a basement.

Ductwork is connected from the humidifier to a floor vent in a central location of the home. The humidified air is then distributed to the home through this ductwork.

The Aprilaire Model 350 Humidifier is designed specifically for a whole-home solution that helps you achieve total comfort through humidity control. While designed for homes with radiators or baseboard heating systems, it's so effective and flexible that it works equally well in homes with central heating and cooling systems. It is installed by a local HVAC professional.

Model 350 features:

 • Fits easily inside closets, heated crawl spaces and basements.
 • Humidifies tightly constructed homes up to 4,500 square feet in size.
 • Has an evaporative capacity of 0.50 gallons per hour.
 • Requires hot water, electricity and access to a drain.  

• Includes manual humidistat control that must be installed in the living area.

Humidity for Health

Reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses, fungi, and dust mites.

Humidity for Comfort

Whether your home is in a dry region of the country, or in an area with seasonal dryness, maintaining the right level of humidity can make all the difference in how comfortable you feel in your home.

Humidity for Preservation

Help preserve the natural beauty of wood floors, cabinetry, furnishings and anything else in your home susceptible to warping, cracking, or other permanent damage due to dry air.

Model 350 Parts


Aprilaire 35 Replacement Water Panel Humidifier Filter for Aprilaire Whole-House Humidifier Models 350, 360, 560 560A, 568, 600, 600A, 600M, 700, 700A, 700M, 760, 760A, 768


Aprilaire 350 Whole House Humidifier


Aprilaire 4004 In-Line Strainer for Humidifier Models 220, 224, 350, 360, 400, 400A, 400M, 500 Series, 600 Series, and 700 Series


Aprilaire 4079 Feed Tube and Nozzle for Humidifier Models 350, 360, 440


Other Aprilaire Humidifiers