Carrier P421-4006 Thermistor Start Kit 318973-401 1 tons for R-22

1 tons for R-22

Common Questions Is the Alco BFK163S compatible with R-410A systems

When transitioning between refrigerants

including NHP23

Carrier P421-4006 Thermistor Start Kit 318973-401 1 tons for R-22As an essential component for high performance service, the Carrier P421 4006 Thermistor Start Kit (OEM Totaline) is the industry standard solution for technicians managing compressor reliability. This 25 Ohm PTC device is engineered to provide the critical additional starting torque required for heavy duty HVAC compressors, effectively acting as a soft start kit to mitigate high inrush current. By connecting in parallel to the run capacitor, it