Through rational allocation and technical improvements of Wotech heat pump water heater, the area of evaporator has been increased, to can absorb the surrounding air from all directions. Its coefficient of performance (COP value) is as high as 450% or even more. It costs energy 75% less than the electric boiler. In general, it costs energy 1/5 less than the solar water heater with electric heating device. For more welcome to join us www.ecowotech.com
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