Air source heat pump water heater. BASC-20IIis split type without tank,circulate heating. The main unit inside is WILO brand. comprehensive COP can reach 6.0(W/W) SpecificationModel No.BASC-20IIHot water supply430L/HRated power380V-3N/50HZRated current9.8AHeating capacity20KWPower input4.2KWHightest water temp.65°CRated water temp.55°CDimesion66*66*91cmFloor request≤10ΩAmbient temp.-5-45°CTap water pressure≤0.6MPaMainframe weight130kgNoise≤54dB(A)Pipe size1”