Frequency electromagnetic hot water unit online air heat pump, heat pump to avoid the winter ultra long run and cause damage.
Frequency electromagnetic water heaters, air heat pump applications online, both to ensure a steady supply of hot water the cold winter months, but also have the effect of annual economic operation.
Ambient temperature above 0 ℃, air heat pump operation;
Ambient temperature is below 0 ℃, frequency electromagnetic hot water plant operation;
Humidity can also be different depending on the area of air, in the case of air heat pump does not freeze in the collector can be set -10 ℃ - + 3 ℃ frequency electromagnetic water heaters, air heat pump both in parallel operation;

Hot water engineering applications:
Hotel hot water, kitchen water, hot water factory dormitory, spas hot water, heating and hot water villas, hot spring pool water.

These are air heat pump / frequency electromagnetic hot water usage units within a year.