This Waterco 10amp 1.0Hp 1.6kw electric heater is the perfect and easiest replacement for the Onga director systems or the Onga 4395 and 4352 heat pumps. The connections are very simmilar and are 40mm barrell unions. The portapac works off an air button (not included) and plugs into a standard 10amp power outlet.

The thermostat for the heater is on the side of the unit and goes from 15deg C up 40deg C. The heater is a demand heater so when ever the water temperature drops below the thermostat set temperature, the heater kicks in and heats to the set temperature again.

The portapac also controls your air blower which plugs in the side of the unit. The air button operation is a 4 push sequencial switch that lets heater and pump work at same time and pump and blower and pump no heater.