A defrost heater is a part of a refrigeration system that forestalls frost and ice buildup on the evaporator coils. It’s usually a heating ingredient that’s energized throughout the defrost cycle to soften any frost or ice that has collected on the coils.
A correctly functioning defrost heater is essential for sustaining the effectivity of a refrigeration system. Frost and ice buildup on the evaporator coils can prohibit airflow, which reduces the system’s means to chill. This may result in elevated power consumption and untimely failure of the compressor.