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The Willows

The Willows

This house in Yorkshire contracted isoenergy to install a 44kW heat pump system.

Technical specification

44kW CTC ground source heat pump

8 x 118m borehole ground array

500l DHW tank

500l heating buffer tank




Installation team: isoenergy Limited (Renewable Solution), JC Pickard and Sons (Plumber), Synergy Boreholes (Borehole Drilling)

About the property: The Willows is a magnificent 6 bedroom house based in the quiet Yorkshire countryside in the village of Lothersdale and provides superb views across the surrounding countryside. The property sits in approximately 1.4 acres of land and is accompanied by a new garage and studio building.

Renewable solution: isoenergy was tasked by the client to provide heating and hot water to the main house, the new garage and the gym development.

With a total heat requirement of around 44kW, a solution was agreed that consisted of two heat pumps; one 34kW and a 10kW. These two heat pumps provide a total of three compressors.

Ground array: A total of 1,888m of ground collector is installed in the ground which is split into 8 boreholes each at a depth of 118m, these are situated on the front lawn and driveway. The pre-insulated pipe to connect the plant room to the new garage building stretches 38m across the drive way to provide heating to the building.

Plant room: The new plant room replaced the existing oil fired system and was designed to integrate the 44kW ground source heat pump system, 500l DHW cylinder and a 500l Buffer tank.

Completion: After months of planning, meticulous organisation, ground works and plant room preparation the system was commissioned in early August 2016, with plenty of time left to prepare for those cold winter months.

Benefits: As well as the increase in efficiency and the reduction in running costs the new system is also supported by the Renewable Heat Incentive (RHI) and will prove to be a great investment. Additionally, the benefit to the environment should not be overlooked, with estimations showing a reduction in carbon emissions of approximately 11,000kg (45%) against an oil boiler system.