Aprilaire 4655 Humidifier Control 320735-701 Rely on factory-authorized components to

Rely on factory-authorized components to ensure long-term HVAC system efficiency and prevent the costly leaks associated with degraded universal caps

As a high-efficiency 1/3 HP HVAC motor

Common Questions What is the difference between a 3-way normally closed and 3-way universal valve

Common Questions What are the signs of a failing 100112659 pressure switch

Aprilaire 4655 Humidifier Control 320735-701 Rely on factory-authorized components toThe Aprilaire 4655 Humidifier Control is a reliable, manual humidistat designed to provide precise low voltage 24V management for your central heating and cooling system. This essential HVAC humidity sensor utilizes a highly sensitive mechanical nylon ribbon filament that expands and contracts based on moisture levels, ensuring your whole house humidifier operates only when necessary. By manually adjusting the relative humidity (RH) setpointtypically