How Heat Pumps Work

To put it simply a heat pump is a device that absorbs heat from one location and transfers it to another. For example if you want to cool your home, a heat pump will absorb the heat inside the house and through its ducting transfer and release that heat to the outside. The great thing with heat pumps is this process can easily work in reverse, bringing heat from outside the home and transferring it inside.

The most popular heat pump systems are:

  • Air Source Heat Pumps (by far the most common)
  • Ground Source Heat Pumps
Both heat pump systems are generally suited to most New Zealand conditions with the Air Source Heatpump being the most preferred.

Air Source Heat Pumps

Heating and cooling in an air source heat pump is accomplished by forcing air by fan over gas refrigerant filled copper coils (like those in domestic fridges) that absorb the heat from the air. The heated gas is then compressed to concentrate that heat which is then either piped inside, to warm the house or outside to cool it.

Images have been sourced from the Encyclopedia of Science (http://www.daviddarling.info), and Heat-pump reviews.com (http://www.heatpump-reviews.com/air-heat-pump.html).

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