Replacement is necessary if you detect high-pitched squealing

The Emerson Alco 054135 (Model HF 1/2 HC 5FT 3/8 X 1/2 SAE S/T) is a balanced ported thermal expansion valve engineered for precision refrigerant flow control in R22 and R407C systems

While light debris can be cleared

this coil provides the necessary electromagnetic force to actuate the internal slide of the 4-way reversing valve

Enhanced Safety: Built-in T-Stat cutout logic supports hazardous temperature detection and power shutdown to protect downstream motors and coils

York S1-2TD06700124 Outdoor Thermostat Refrigerant Replacement is necessary if youYork S1 2TD06700124 Outdoor Thermostat