... /L,AW13/LNormal air to water heat pump can work at above -10 degrees ,Low temperature air to ... water heat pump can work at -20 degrees.AW09,AW09B,AW12,AW12B, ,Power supply ... 2.511.1/3.59.5/2.812.0/3.613.8/4.318.9/5.7Heat output/Power consumption ... refrigerant flow accurately, SCHNEIDER electronic parts make the unit work safely ,etc ;If you have any requirements, please ...