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@denlawyer7
bộ làm mát dầu thuỷ lực (EF) is must do to be concerned about. The simplest explanation of EF is every dollar used gas, X% of that goes to heating the actual. A higher EF extra energy efficient the tankless water heater is. Think of the EF becoming similar for the miles per gallon a great automobile. The EF ranges from 3.78 all the way up to […] View