When this detached rural property was originally refurbished and extended
we installed a PV array. A few years later the owners asked us to return to
replace their old oil-fired boiler with a 16kW air source heat pump.

Our heat loss analysis showed that a 16kW NIBE F2040 heat pump would
match the peak heating and hot water load without any alterations to the
existing wall-mounted radiators. The heat pump is mounted on an existing
concrete surface in place of the old oil tank, next to the utility room in
which the oil boiler had been located. This enabled us to reuse existing

We installed a 300L NIBE Megacoil Solar and a 40L buffer tank in a firstfloor
cupboard replacing the existing unvented hot water cylinder. This
involved restoring an existing solar thermal system, which had been out of
operation for several years.

The 2.66kWp PV array comprises 14 Upsolar M190M modules mounted on
a south facing roof. These are connected to grid by a single SMA 2.5 kW
PV inverter.