Heat Pump efficient water heaters

A Heat Pump offers you a way to use electricity to heat water efficiently, when you need it.Where a geyser uses three units of electrical energy to produce three units of heat energy, a Heat Pump converts just one unit of electrical energy into three units of heat energy-hence a saving of up to 67%.

What are the pros and cons of a heat pump system?

  • More effective than an electrical geyser, as uses 1-unit electricity, and 2-units outdoor air, versus an electrical geyser which relies 100% on electricity.
  • Efficient during all seasons and any time of day.
  • Aesthetically pleasing, no geyser is visible on the roof.
  • Requires annual maintenance.
  • More expensive than Solar Water Heating.
  • Will not work during power outages or load shedding.

What is a Heat Pump?

Heat Pump is an energy efficient water heating system. It uses a vapour compression cycle similar to that of an air conditioner. However, instead of the cycle being used to cool air, it uses the heat generated and collected from the atmosphere to heat water. A Heat Pump consists of the outdoor unit, these come in different kW sizes depending on the size of geyser you are heating up. The Heat Pump operates using a controller which manages the water circulation pump. This will allow you to set it up to go on according to your hot water needs.

Heat Pump

Energy Efficient Heating

A Heat Pump uses a small amount of energy to move heat from one medium to another, using mechanical work to move heat from a low temperature source to a high temperature sink. Heat Pumps use the reverse cycle of a refrigeration plant to heat water. In effect, it transfer heat from a source such as air to the water which is to be heated.

As in other refrigeration equipment, the Heat Pump system employs an evaporator, a compressor, a condenser, refrigerant gas, and an expansion valve within a closed circuit. Latent heat is given off when the refrigerant gas is liqufied through the condenser and transferred to the surrounding water together with further “sensible” heat loss, effectively raising the temperature of water to a higher temperature.