Ground Source Heat Pump Installation

MCS certified ground source heat pump (GSHP) installation across Cornwall. Horizontal slinky loops, vertical boreholes, and shared loop arrays. £7,500 BUS grant handled end-to-end. SCOP 4.5+ for the lowest possible running costs.

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200+ Installations

What Is a Ground Source Heat Pump?

A ground source heat pump (GSHP) extracts low-grade heat from the ground via a buried collector loop and uplifts it to useful heating temperatures using a refrigeration cycle. Because ground temperatures in Cornwall stay between 9–12°C year-round — far more stable than the air — a GSHP runs at a higher Seasonal Coefficient of Performance (SCOP) than an air source unit: typically 4.0–4.8 vs 3.0–3.5 for ASHP. That difference compounds over a heating season into 20–35% lower running costs. Cornwall is genuinely well-suited to ground source: the Eden Project's geothermal drilling at Bodelva (3 miles from St Austell) is delivering geothermal heat to its biomes from depths around 5km, and shallower domestic borehole drilling is straightforward across most of mid and east Cornwall. The £7,500 Boiler Upgrade Scheme grant covers GSHP at the same level as ASHP — but because GSHP installations are more expensive (mainly due to the ground works), the grant takes a smaller percentage off the total. The trade-off is much lower running costs over a 25-year system life. For Cornwall farmsteads, smallholdings, and rural properties with paddock space (around 2.5x the floor area of the house, for horizontal loops) GSHP is often the optimal long-term choice.

Key Benefits

Benefits of Ground Source

SCOP 4.0–4.8

GSHP delivers 4.0–4.8 kWh of heat per kWh of electricity — vs 3.0–3.5 for ASHP. At Q2 2026 electricity prices, that's heating costs of around 5.4p/kWh vs 7.0p for ASHP.

25–30 Year System Life

The heat pump unit lasts 20–25 years. The buried ground loop lasts 50–100 years. Total cost of ownership across the system life is significantly lower than ASHP.

No External Unit

GSHP units sit indoors (typically in a utility room or plant room). No outdoor fan, no audible noise outside, no planning/visual issues — ideal for listed buildings and conservation areas.

£7,500 BUS Grant

The same £7,500 Boiler Upgrade Scheme grant applies as for ASHP. CCS handles the full application — the grant comes off your invoice.

Cooling Capability

Reverse-cycle "passive cooling" through the ground loop costs almost nothing to run and gives you genuine summer cooling without an air conditioner. Useful for south-facing Cornwall homes.

Best for Off-Gas Rural Properties

For properties replacing oil or LPG with available paddock or borehole space, GSHP delivers lower running costs and longer service life than any other heating system.

Our Process

How It Works

Step 1

Free Survey

We visit your property to assess your heating needs, measure heat loss, and discuss the best options for your home.

Step 2

Design & Quote

We design a bespoke system, identify all eligible grants including the £7,500 BUS scheme, and provide a transparent fixed-price quote.

Step 3

Installation

Our MCS certified engineers install your system cleanly and efficiently, typically within 2–4 days, with minimal disruption to your home.

Step 4

Aftercare

Full system handover, MCS certification, warranty registration, BUS grant application completion, and ongoing support when you need it.

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GSHP Costs in Cornwall

A typical Cornwall GSHP installation costs £25,000–£35,000 before grant, depending on heat pump size, ground works, and property requirements. With the £7,500 BUS grant, net cost is £17,500–£27,500. Horizontal slinky loops (best when you have 2.5× the house floor area in clear paddock or garden) add £4,000–£8,000 of trenching and excavation. Vertical boreholes (used where land is limited or geology favours it) cost £15,000–£25,000 for typical 80–120m boreholes. The heat pump unit itself runs £5,500–£9,500 depending on output (8–17 kW most common in Cornwall). We carry out a full ground assessment, MCS-compliant heat-loss calculation, and BUS grant application as part of every quote.

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