Is humidity removal a problem with an ETA system?
No. In fact, the ETA system uses typical 50 to 70 F earth to remove heat from the refrigerant in the cooling mode. Air-source heat pumps must typically rely on 80 to 90 F outside air to remove heat from the refrigerant. Thus, the refrigerant in an ETA system is typically colder and further below the dew point, resulting in the removal of significantly more humidity than conventional system designs.
