Mr Elliott, Cornwall
3.78kWp Roof with Heat Pump
"Mr Elliott and his wife moved down to a village in Cornwall in 2007. The house
was off the main gas grid and used night storage heaters to provide heat. Looking
for something more efficient and wanting to take the opportunity to become more
green switching to oil or LPG gas did not appeal. A heat pump was chosen and as
the garden was going to undergo a major overhaul a ground source heat pump was
selected to work with an underfloor heating system."
The system was installed in the summer of 2008 supplying all the heat and hot water
requirements for the house. The only other source of heating was a wood burner.
The system was certainly put through its paces as the next two winters were two of
the most severe on public record ! The system coped exceptionally well – they were
not cold at all and listened as their friends in the village bemoaned the fast-rising oil
prices up to 75p a litre and the uncertainty of even being able to get a delivery!
In 2011 they made a very wise choice and installed a 3.78kWp solar PV system. The
combination of the two technologies works exceptionally well. The pv system helps
to provide the power for the heat pump and they have seen their total energy bills fall
to around £600 a year (excluding cost of logs for wood burner) as well as receiving an
annual income in excess of £1800 a year from the feed-in tariff!
Heat pumps can be either air source or ground source. Unlike ground source heat
pumps Air source heat pumps do not require extensive groundworks or internal works
and can work in conjunction with radiators, warm air or underfloor heating systems.
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