11 matches your service manual

An isolated coil provides dedicated terminals for the trigger circuit

Proven Compatibility: Direct replacement for 20A DP applications and compatible with 24V control circuits found in most residential HVAC systems

this unit features a 7/8" ODF sweat connection for seamless integration into high-performance refrigeration circuits

this sensor provides superior longevity compared to auxiliary contact relays

Carrier HH18HA036 Defrost Thermostat 321894-708 11 matches your service manualThe Carrier HH18HA036 Defrost Thermostat is a critical genuine OEM replacement part designed to regulate the defrost cycle in high efficiency Carrier heat pump systems and air conditioning units. For technicians troubleshooting icing issues, this coil temperature sensor is the standard solution for monitoring evaporator or outdoor coil conditions. When the coil temperature drops below the set point, this defrost switch initiates the sequence to