Free heat from the garden?

Heat is widely available in the ground, air and water around your house.
These natural sources of heat are constantly replenished by the sun, wind and rain. A heat pump system will harness these free and renewable energy sources for heating your house and supplying hot water at a very low cost. The role of the heat pump is to ‘pump up’ heat from a low temperature source, for example the ground under your lawn and release it at a higher temperature into your central heating system.

Heat Pump Diagram

Ok. But why is it so economical?

Because at least 70% of your heat will come from a free source.
For every unit of electricity used to drive the heat pump, 3 to 5 units of useful heat will be generated.
Manufacturers generally refer to the ratio between the useful heat produced and the electricity used as the co efficient of performance.
With an overall energy efficiency in excess of 400%, compared to 70%-85% efficiency for a good oil or gas boiler, no wonder a heat pump is so economical.

And good for the environment...

When driven with conventional electricity, a heat pump system emits 40% less CO2 emissions than a boiler.
That’s a great contribution to the fight against climate change.
But if you can operate your heat pump with green electricity (e.g. from wind farms) then your central
heating system becomes 100% renewable and totally free of greenhouse gases emissions.

Fine. Will it fit my house?

If you are building a new house, you are in the best position to do it.
You can cover the extra cost with your mortgage and finance the installation at a low cost.
Make sure your house is well insulated and opt for a heat distribution system operating at a low temperature (e.g. underfloor heating or fan coils).
This ensures optimal performance of your heat pump.
The heat pump itself requires little room and will fit neatly into your utility room or hot press.