Coastline Housing, Wheal Vyvyan

Ground Source Review Coastline, Wheal Vyvyan 4

Ground Source Review: Coastline, Wheal Vyvyan.

This multi-award winning scheme between Kensa Contracting and Coastline Housing saw the replacement of night storage heaters with Kensa ground source heat pumps in twelve bungalows housing older residents in rural Cornwall; the shared ground loop array system undertaken in Cornwall.


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Ground Source Review: Coastline, Wheal Vyvyan

Coastline Housing and Kensa Contracting replaced inefficient night storage heaters in a group of bungalows situated off the gas grid.

The project benefited from a combination of funding including the Non-Domestic Renewable Heat Incentive (RHI: this scheme has now closed – please visit this page to explore other funding), an up-front grant from the Energy Companies Obligation (ECO) and new funding offered by DECC in the form of the Central Heating Fund (CHF).

The Wheal Vyvyan estate had six communal boreholes drilled by local drilling contractor Aquasource to an average depth of 60m, feeding 12 individual 3kW Shoebox heat pumps.

Resident Ms Osnebury commented:

Very pleased on affordability – was approximately £30 per week now £12 per week – and I can stay nice and warm for that! I have never been happier. No damp problems now – all gone.

Ralph Retallack, Energy Efficiency Manager at Coastline Housing said:

I would strongly advise other social landlords to be open to this technology as an option. Ground source heat pumps are very low maintenance, there is simply not much to go wrong. The boreholes provide sufficient energy to meet each property’s full heating and hot water needs. We were very impressed with the small size but high efficiencies of Kensa’s innovative Shoebox heat pumps. From start to finish the project with Kensa has run extremely smoothly.


Key Facts

  • Kensa Contracting managed scheme
  • x12 bungalows housing older residents
  • x11 Economy 7 electric heaters and x1 oil boiler replaced
  • x3 groups of 2 boreholes – each group serving 4 dwellings
  • An individual 3kW Shoebox heat pump housed in external enclosures next to the front door serving each dwelling
  • Non-Domestic Renewable Heat Incentive (RHI: this scheme has now closed), Central Heating Fund (CHF) & ECO grant
  • New hot water cylinder and radiator systems
  • £188 saved on heating bills per annum