Our domestic heat pumps are water-cycle type (coil-free-in-tank type), that is, there are no refrigerant coils in water tanks. Water pipes connect main units and tanks. The technology is more advnanced than traditional refrigerant-cycle type (coil-in-tank type). It brings less leakage possibility, more safety and installation convenience.

+ The units is more heavy because of steel plates. 2-3mm steel plate is combined with enamel. By 1000℃ high temperature sintering, the enamel and the steel is united exactly.
+ The inner bladder can endure pressure of 12Kg.
+ Our prodcuts' service lives are more than 12 years. The warranty time of water tanks is longer (5 years, while other product are usually only 1 year).
+ There are no coils (copper pipes for refrigerant transportation) in the water tanks. It is a more advanced design than traditional heat pump water tanks and have prominent advantages.
+ All the connection between heat pump and water tank are finished with water pipe, which absolutely prevent the refrigerant leakage, and eliminates potential troubles.
+  in the process of the dynamic heat exchange, hot water in the tanks is in a moving state, which keeps the water temperature same between the top and foot of the tank. The heating capacity of 150 liter WAVE water heaters is bigger than 200 liter traditional refrigerant-cycle type (coil-in-tank type) heat pump water heaters.