Design, drill and install systems across the South EastWhat does a ground source heat pump system cost?
A GSHP is a precision-engineered system designed around your property, geology and heating needs. Here is what a complete installation includes and what drives the cost.
What does a complete GSHP installation include?
Every ground source heat pump project is different, but a typical installation covers everything from drilling through to commissioning. Because Nicholls are both drillers and MCS-certified heat pump installers, you deal with one team from start to finish — no subcontractors, no handover issues.
Borehole drilling
One or more vertical boreholes drilled to the depth your site requires, using our own fleet of compact drilling rigs.
Ground loop installation
Sealed-probe closed-loop pipework or open-loop abstraction and discharge boreholes, depending on your system design.
Heat pump unit
The heat pump itself, installed internally and connected to your heating distribution system and hot water cylinder.
Heating integration
Connection to underfloor heating zones, radiators or a combination of both — matched to your property's heat demand.
Hot water cylinder
A dedicated hot water cylinder sized for your household, providing domestic hot water alongside space heating.
Controls, commissioning & MCS certification
System controls, full commissioning, performance handover and MCS certification — required to access the Boiler Upgrade Scheme grant.
One team, one project: Unlike many installers who subcontract the drilling, Nicholls handle the entire process in-house. This means better coordination, fewer delays and a single point of accountability from survey through to sign-off.
What factors affect the cost?
No two GSHP installations are the same. The final cost depends on a combination of your property, its geology and the heating system design. Here are the five main factors.
Heat loss calculation
Your property's size, insulation levels and target temperatures determine how much heat output the system needs to deliver. This calculation drives everything else — borehole depth, heat pump size and overall cost.
Number and depth of boreholes
Most residential systems require one to four boreholes drilled to between 100m and 150m. The geology beneath your site determines how much heat can be extracted per metre, which in turn dictates the number and depth of boreholes needed.
System type
Closed-loop systems are the most common and suit most sites. Open-loop systems can be more efficient but require an Environment Agency abstraction licence. River source heat pumps are an option for waterside properties.
Existing heating infrastructure
Whether your property already has underfloor heating, correctly sized radiators or a suitable hot water cylinder affects the scope of work. Upgrades to emitters or pipework may be needed to get the best performance from a heat pump.
Site access
Our compact drilling rigs can work in most conditions, including tight residential gardens and restricted access sites. Where access is straightforward, mobilisation costs are lower.
Boiler Upgrade Scheme
The government's Boiler Upgrade Scheme (BUS) currently provides grants of up to £7,500 toward the cost of a ground source heat pump installation in England and Wales. The grant is available for domestic and some small commercial properties and is designed to make the switch from fossil fuel heating more affordable.
To qualify, the installation must be carried out by an MCS-certified installer. Nicholls hold MCS certification and manage the grant application process on your behalf, so you do not need to apply separately.
Please note: The Boiler Upgrade Scheme has been subject to changes in grant value and eligibility criteria since its launch. We always provide the latest information during your site assessment.
Why start with a site assessment?
Every accurate GSHP quote starts with three things: a detailed heat loss calculation for your property, a geological review of your site and an engineered system design that brings it all together.
Heat loss calculation
How much heat your property needs, room by room.
Geological review
What the ground beneath your site can deliver.
System design
Borehole layout, heat pump specification and integration plan.
This process means you receive a quote based on real data rather than assumptions. Our site assessments are provided on a no-obligation basis.
Ready to find out what a GSHP would cost for your property?
Book a no-obligation site assessment and get a quote based on your property, geology and heating needs.