it ensures stable thermal management

or a "burning" smell resulting from increased friction

While a faulty switch is possible

This housing is specifically compatible with York model F2FP048H06A and serves as a direct replacement for part number S1-37318075003

maintaining identical dimensions (10" x 13" x 1

Johnson Controls A40FA-1 Pneumatic Switch Els PW 17895 it ensures stable thermal managementTemperature Actuated Pneumatic Switch, Opens on Temperature Drop, Manual Reset, 15 55 Degree Setpoint Temperature Range, 4 Degree Differential, 1 8" x 20" Element, Screwdriver Slot Adjustment, 1 4" Barbed Fitting for Tubing This item does not qualify for free shipping.