The heat pump is not reliant on sunshine or direct radiation but extracts heat energy from the air at any time of the day or night and so is effectively a solar heater in a different form. Even in extremely cold conditions (-5°C and lower) the heat pump can still provide a saving of more than 60%. In most cases in South Africa, where our daytime temperatures are relatively high, the efficiency is going to be at least 5 x that of an element heated water system. A heat pump looks similar to an air conditioner and can be installed either on the ground or on brackets on a wall. It is quiet and unobtrusive with a user friendly controller, has no greenhouse gas emissions and requires very little maintenance.