The Complete Guide to Ground Source Heat Pumps
Ground source heat pumps (GSHPs) are an increasingly popular choice for homeowners seeking an energy-efficient, eco-friendly heating solution. By extracting heat from the ground (or water source), they provide reliable warmth for homes and hot water all year round.
If you’re considering a ground source heat pump for your property in Devon, Dorset, or Somerset, this guide will explain everything you need to know – from how they work to costs, maintenance, and available government incentives.
What is a ground source heat pump?
A ground source heat pump is a renewable heating system that transfers heat from the ground into your home. Pipes buried underground absorb natural heat, which is then compressed and converted into usable energy.
This system is remarkably efficient, producing around 4 units of heat for every 1 unit of electricity consumed — significantly improving energy efficiency and reducing heating costs.
Evergreen Renewable Energy installs Kensa Heat Pumps, a trusted British manufacturer known for their high performance and reliability.
How does a ground source heat pump work?
Ground source heat pumps operate by circulating a special fluid through a network of pipes, commonly known as slinkies, which are buried in the ground. This fluid absorbs heat from the earth, which remains at a consistent temperature year-round.
The heat is then transferred to the pump’s compressor, which raises the temperature to a level suitable for heating your home and hot water.
Are ground source heat pumps efficient in the UK climate?
Yes, ground source heat pumps are highly effective in the UK, even during colder months. The ground maintains a stable temperature throughout the year, typically between 8°C and 12°C, allowing the system to operate consistently regardless of outdoor weather conditions.
In regions like Devon, Dorset, and Somerset, where winter temperatures can fluctuate, GSHPs remain a dependable and energy-efficient heating solution.
How much does it cost to install a ground source heat pump?
Installation costs for a ground source heat pump generally range between £14,000 and £24,000, depending on factors such as:
Property size
Type of system (slinkies, boreholes, or pond mats)
Ground conditions
While this may seem like a significant investment, there are generous government incentives to help offset the cost.
What are the running costs of a ground source heat pump?
Running costs for GSHPs are typically lower than traditional heating systems, particularly when replacing oil, LPG, or electric-only heating.
By combining your ground source heat pump with solar PV or a battery storage system, you can further reduce energy costs by powering your heating system with renewable electricity.
Do I need planning permission for a ground source heat pump installation?
In most cases, ground source heat pumps fall under permitted development rights, meaning planning permission is not required.
However, if your property is listed, located in a conservation area, or requires extensive excavation, planning consent may be necessary. Evergreen’s experienced team can advise on any additional permissions required for your project.
Can a ground source heat pump heat my entire home?
Yes, when correctly sized and installed, a ground source heat pump can comfortably heat your entire home, including radiators, underfloor heating, and hot water systems.
Evergreen’s team will assess your home’s heating needs to recommend the most efficient system for your space.
How noisy are ground source heat pumps?
Ground source heat pumps are incredibly quiet, with most noise coming from the system’s internal components – typically no louder than a household fridge. With the main unit often housed indoors, noise disruption is minimal.
What maintenance do ground source heat pumps require?
GSHPs are known for their low maintenance requirements. Routine checks should include:
Ensuring the external pipes are clear of debris
Checking the system pressure
Cleaning or replacing filters
Annual servicing by a qualified professional is recommended to maintain efficiency and ensure the system’s longevity.
Are there government grants or incentives for installing ground source heat pumps?
Yes, the Boiler Upgrade Scheme (BUS) offers a £7,500 grant for eligible properties installing a ground source heat pump.
Evergreen Renewable Energy is an MCS-certified installer, which ensures your installation meets government standards, making you eligible for this funding. Evergreen can guide you through the application process to help secure your grant.
How long do ground source heat pumps last?
With proper maintenance, a ground source heat pump can last 20 to 25 years or more. The underground pipe network can last over 50 years, making it a long-term investment in your home’s energy efficiency.
How can we help?
With over a decade of experience installing renewable heating solutions in East Devon, West Dorset, and South Somerset, Evergreen Renewable Energy offers expert guidance and trusted service. As an accredited installer of Kensa Heat Pumps, Evergreen ensures high-quality installation and ongoing support.
If you’re ready to explore the benefits of a ground source heat pump for your home, contact Evergreen Renewable Energy today for a no-obligation site survey and personalised quote.
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Posted on March 27th 2025
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