White Rodgers 3F05-1 Adjustable Snap Disc Fan Control F - 90-130

The White Rodgers 3F05-1 is an adjustable snap disc fan control designed to automatically regulate fan operation based on temperature. This reliable temperature-activated switch is engineered to turn fans on and off within a temperature range of 90°F to 130°F, making it ideal for forced air heating systems, furnaces, and other HVAC applications.

Key Features:

• Adjustable temperature range from 90°F to 130°F for precise fan control
• Snap disc technology provides reliable, consistent switching action
• Bimetal disc construction ensures long service life and accurate temperature sensing
• Direct mount design for easy installation on plenums and heat exchangers
• Automatic fan operation improves heating efficiency and comfort
• Suitable for residential and light commercial HVAC systems

This fan control mounts directly to the furnace plenum or heat exchanger and automatically energizes the blower motor when the set temperature is reached, then de-energizes it as the temperature drops. The adjustable setpoint allows technicians to optimize fan cycling for maximum system efficiency and occupant comfort.