Ranco offers general use and custom-designed microprocessor-based controllers for a variety of HVACR applications and is the world's number one supplier of reversing valve technology for heat pumps.

Temperature Controls
Ranco provides a broad offering of electro-mechanical and electronic temperature controls designed to switch electrical loads such as contactors, relays, fans, and motors in HVAC and Commercial applications in response to changes in sensed temperature.

Ranco O Series and G Series Pressure Controls
Ranco O and G series pressure controls are designed to switch electrical loads such as contactors, relays, fans and motors in HVAC and Commercial applications in response to changes in sensed refrigerant pressure.

Humidistats
Ranco Humidity controls are designed to regulate the relative humidity of confined spaces by cycling humidifying or dehumidifying equipment. They are designed for use as internal components for portable humidifiers and dehumidifiers, and as wall mounted humidity controls for central systems.

Ranco V1-V12 4-Way Reversing Valves
RANCO 4-Way Reversing Valve is designed for residential and commercial heat pumps (unitary and split systems), including air and water heat sources.

HVAC Electronic Controls
Ranco produces a wide range of electronic controls for a broad array of OEM (Original Equipment Manufacturer) HVAC applications.

Electronic Defrost Controls
Ranco electronic defrost controls are designed to control the removal of frost and ice from the outdoor coil of an air - source heat pump (unitary and split systems).