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How Heat Pumps Work

Our environment is full of energy, even at sub-zero temperatures there is plenty of energy available to use for heating and hot water.

Heat pumps use conventional refrigeration technology to extract the sun’s energy stored in the environment and raise it to a temperature suitable for heating purposes. This method even works in the middle of winter at temperatures as low as -25ºC.

Low running costs, Low ownership costs

The considerable contribution from renewable energy sources also helps to provide running cost savings over fossil fuelled heating systems and arguably more importantly, future proofs the system against future energy price increases.

But fuel costs are only part of the story. Unlike gas and oil based systems, heat pumps require no costly regular maintenance or annual safety inspections. And because an Eco-Series heat pump has a reasonable life expectancy of 20 – 25 years, typically twice that of a boiler, the investment costs can be recovered over a longer period meaning the ownership costs over the working life of the system are demonstrably lower.

 

 

bathing

 

savings

 
  1. 75% of the energy is taken from the environment i.e the air or ground and transfered to the heat pump.
  2. 25% of the energy is sourced from the natural grid in the normal way of supplying your electricity. This is used to operate the heat pump but with very low consumption.
  3. The energy from the air or ground is transfered to the refrigerant inside the heat pumps evaporator. This causes the temperature of the refrigerant to rise and change state from liquid to gas.
  4. The refrigerant gas is then compressed, using an electrically driven compressor, reducing its volume but causing its temperature to rise significantly.
  5. A heat exchanger (condenser) then extacts the heat energy from the hot refrigerant to heat water for central heating, underfloor heating or domestic hot water.
  6. After giving up its heat energy the refrigerant turns back into a liquid and is able to absorb energy from the envirnoment, allowing the cycle to begin again.