Copeland Comfort Control (White Rodgers) 3F05-1 Temperature Control

The White Rodgers 3F05-1 is a professional-grade adjustable fan control engineered to replace a wide variety of fixed snap disc thermostats in HVAC systems and heating appliances. This SPST close on rise temperature control features an adjustable range of 90 to 130 degrees F, allowing technicians to fine-tune fan cycling for optimal performance. Designed as a rugged snap disc auto reset fan switch, it utilizes a 74T12-310708 style therm-o-disc for reliable operational consistency. With a fixed 20 degree F differential, this HVAC temperature switch ensures the blower motor engages and disengages at precise intervals. It serves as the direct replacement for the 3F05-3 and various Therm-O-Disc Style 310708 models, making it an essential service truck item to reduce inventory complexity. The inclusion of quick connect terminals facilitates rapid field installation, while the Type 74T12 construction provides long-term durability in high-demand heating applications.

• Universal Versatility: Consolidates truck stock by replacing multiple fixed-temperature snap disc models with one adjustable temperature range control.
• Precise Fan Cycling: The close on rise switch action ensures the blower activates exactly when the plenum reaches the set point.
• Standardized Installation: Features 1/4-inch quick connect terminals for seamless integration into existing wiring harnesses.
• Automatic Reset: The auto reset functionality eliminates manual intervention after a high-temperature cycle.

Is the 3F05-1 a suitable replacement for a furnace limit switch?
No, this unit is a close on rise fan control. Limit switches typically require an open on rise action for safety. Always verify if your application requires the fan to turn on (3F05 series) or the burner to turn off (3L05 series) at the temperature set point.

How do I adjust the temperature set point on this control?
The White Rodgers 3F05-1 features a calibrated dial on the face of the disc. Use a screwdriver to align the desired turn-on temperature with the indicator mark before mounting.

Will this replace a 3F05-3 model?
Yes, the 3F05-1 is the official direct replacement for the legacy 3F05-3 model, maintaining the same electrical ratings and physical mounting footprint.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.