5.0 based on 154 reviews on

Ground Source Heat Pumps

Cinergi is an MCS accredited installer of both air and ground source heat pumps.

Recognised for Quality
Trustmark Tesla Powerwall RECC Napit MCS HPA UK Gas Safe Register f-gas-register Oftec Trustmark Tesla Powerwall RECC Napit MCS HPA UK Gas Safe Register f-gas-register Oftec

What is a ground source heat pump (GSHP)?

With the growing focus on renewable energy and the quest to become more energy efficient, heat pumps are becoming more commonplace in the world of domestic heating. The advancement in technology, plus government incentives such as the Boiler Upgrade Scheme (BUS), has made them a much more viable option.

Heat pumps are most commonly found in 2 forms:

Both work in the same way but, as the name suggests, they generate energy from either the air or the ground.

The crucial difference between a GSHP and a traditional boiler is that it is powered by electricity rather than burning fossil fuels, offering both a cost and carbon emission saving.

What are the Benefits of Ground Source Heat Pumps?​

Reduced Fuel Bills

Depending on your current energy supply, a heat pump has low running costs and can reduce your heating energy bills. Typically, the largest savings are seen when replacing oil, LPG, electric, or old/inefficient natural gas boilers.

Reduced Carbon Emissions

A heat pump is a source of renewable energy and does not burn fossil fuels. As a result, switching to a ground source heat pump can drastically reduce your home’s carbon emissions.

Minimal Maintenance

A yearly inspection is required in order to ensure the heat pump is operating effectively and safely, and to maintain the relevant guarantees. Therefore, the overall running costs are lower than maintaining a gas boiler.

Easier To Install

A GSHP is undoubtedly more efficient than gas central heating, and generally more efficient than an air source heat pump. This is because the temperature below ground is constant throughout the entire year whereas the air temperature obviously fluctuates quite drastically, thereby affecting the efficiency of an air source heat pump.

Ready to find out more about heat pumps?

If it all feels a bit complicated, don’t worry. That’s what we’re here for. Cinergi makes switching from a traditional heating system to a heat pump simple, whether you’re ready for a quote or just want honest advice.

5.0 based on 154 reviews on

How do ground source heat pumps work?

Ground source heat pumps work by absorbing natural heat energy from the ground to provide space heating and hot water.

A system of pipes is run underground in the form of horizontal loops or vertical boreholes, through which a mix of water and antifreeze is pumped. The liquid absorbs the natural heat from the ground, is compressed and then passes through a heat exchanger, which is powered by electricity. This is used to heat water which is then used via your heating system and hot water. 

As with air source heat pumps, ground source heat pumps are more efficient when producing water at lower temperatures – this makes them ideal solutions for homes with underfloor heating, but also work with conventional radiator systems.

Why homeowners choose Cinergi for heat pump installation

We make renewables Simple

We make renewable energy simple

No jargon. No pressure. Just clear, honest advice that helps you understand your options and feel confident in every decision.

We know our stuff

We know our stuff

We’re highly accredited and have decades of experience. We design systems using proven technology, trusted manufacturers and the latest innovations to future-proof your home and maximise efficiency.

We Design Around You   

Every home and business is different. We take the time to understand your energy use, goals, and budget to create tailored recommendations in your best interest, not ours.

We respect your home

We treat every property as if it were our own, with genuine care, attention to detail, and ongoing support you can rely on. 

5.0 based on 154 reviews on

Trusted by Homeowners Like You

We’re proud of our reputation for quality workmanship and excellent service.

Anna M.
1 month ago
Cinergi installed a full solar system, battery storage and EV charger for us. From the initial consultation with Shannon and James, to the final installation from Kieran, Dan and Josh, the team demonstrated exceptional knowledge and clear, consistent communication throughout the entire process. Shannon, Kate and James were always quick to respond to all my questions. Since the installation, the level of support and communication has been amazing. Kate is an outstanding Operations Director - she genuinely cares about customers long after installation is complete. The SigEnergy system is performing brilliantly. I have recommended Cinergi to several people already and I wouldn’t hesitate to recommend Cinergi to more. It’s rare to find a company that combines technical expertise with such a strong commitment to customer service.
Tim E.
1 month ago
A major piece of work was well done with minimal disruption. Our installer, Charlie, was willing to allow us to say exactly what we wanted and was always willing to go the extra mile. He coped with the extraordinary high heat levels as well!
STEPHEN H.
2 months ago
Adam and Dave were the 2 leads for our Ariston air source heat pump, in June 2026. They were both hard workers and very polite and capable. The whole process went very well and we are happy with the new set up. We had 10 radiators fited at the same time. Many thanks.
Grace G.
4 months ago
Thank you Jack for getting our garage roof solar panels& battery up, running & explained. We appreciated your neat cabling on the garden wall and how tidy you left everything. Speedy & efficient.
Helen W.
4 months ago
Jack, Dan and Louis did an excellent job installing our solar panels and battery . Polite and helpful, checking in with us each step of the way. Installed 13 panels in one day. Explained the App to us. Very pleased indeed.
Jon S.
4 months ago
We are most impressed with our heat pump system and the whole team at Cinergi. The system has performed faultlessly for 6 months so far since its installation in Dec25. Cinergi were excellent at each stage of the process. Dave, our installation engineer did a brilliant job as did the whole team.
Aseef P.
4 months ago
chris was exceptional with all aspects. Highly recommended to anyone who wants Air-conditioning in either house or office. Value for money
Selina G.
4 months ago
We got several quotes for a ASHP but chose Cinergi as it was a independent, family run business with their own staff undertaking the works and not 3rd party contractors. We have had a lot of upgrade works undertaken on our property with different contractors but Cinergi was by far the smoothest. We would not hesitate to recommend Cinergi to others. Max led the installation with the help and hard work of Theo and Tommy. All the team were polite, kept the site tidy and completed the works without any issues. Max in particular was exceptional in his organisation, keeping us informed each day, answering our questions and ensuring all the works were done to a very high standard. He clearly takes pride in his work and he's a credit to the company.
Robert A.
5 months ago
It takes quite a lot to impress me these days but just had a new heat pump and water heater installed today. The whole Cinergi team worked quickly and professionally and in particular Max was outstanding. I would happily recommend Cinergi to anyone. Rob.
Chris S.
5 months ago
Really impressed with Cinergi from start to finish. The survey and design process was thorough, the installation team were brilliant and did a fantastic job, and the after-sales support has been great. The system has been running perfectly and the data is already showing the benefits. Would highly recommend.
Jeremy T.
5 months ago
Fantastic service for the survey, design and installation of our solar panels and batteries by a great group of people. Cinergi HQ (including Jamie, Kate and Danielle) were incredibly helpful, organised, professional and flexible. The installation team of Jack, Ben, Alex and Louie were a pleasure to have in the house and were really fast and effective. Thanks to all. Part 2 of review as the ASHP and heating system has been installed. Once again, Cinergi has surpassed my expectations....the new system is well designed (to match the insulation and design of the house), efficient and finished with a real eye on the detail. Huge thanks to Lewis and Charlie for the installation and James and Ian for the design and support. An ongoing, unreserved, strong recommendation for Cinergi.
Jenny W.
5 months ago
Ours was a complicated installation. We had PV panels; a solar water heater; a 10kWhr storage battery; a ( redundant) Solar Boost system and a 70 year old house. The job was never going to be straightforward and other well known companies were very reluctant to take it on. Cinergi did so and the close management of the work was first rate, with new supervisory procedures being introduced company wide to address the issues that arose as the work proceeded.
Deborah E.
5 months ago
My old heat pump was replaced and moved to a different location. Adam and Josh were great, very polite, neat and tidy workers, they made sure everything was up and running and took care to cause the least disruption possible. Very pleased with them and the company and I felt the cost of the work was competitive.
Matthew J.
6 months ago
Cinergi recently installed an ASHP for my self build and the service has been excellent. Charlie did a great job installing and the standard of install is excellent. Price was competitive if not better than most and the whole team from quoting to installing have been supportive and I've been informed at every step. I would definitely recommend their services.
Martin J.
6 months ago
Cinergi are with you for the journey! Cinergi installed a large solar, battery, gateway and EV charger system for us at the end of 2025. 36 x Aiko panels, SigenStor (2 x 10 BAT), Sigenergy Gateway and Sigenergy EVAC wall box. They are a professional outfit, but with a distinctly family feel providing warm engagement throughout. They were the fastest to respond after initial contact, and the first to release a quote. They worked with us to design the system that we wanted and was right for us - where it seemed some others tried to sell us the system they wanted to sell. They had endless patience while we explored different variations of system size, product types, installation locations etc, re-quoting each time without fuss. Come the installation, the guys were friendly, courteous, clean and hardworking - despite what the weather through at them. The results are outstanding. Cinergi’s post-installation support has been excellent, with on-site follow-up inspections, snagging items and answering our questions. With great service, friendly nature, competitive prices, quality installation and after care, Cinergi are with you all the way for your journey. Huge thanks to Shannon, James, Kate, Danielle, Alex, Louie, Josh, Jack and Ben who have all played their part in our journey.
Fran G.
6 months ago
Really happy with our solar panel system installed very promptly by Jack and Alex who were friendly and efficient. We received a lot of useful info and advice from everyone we dealt with at the company including Adam and James. Also we had great communication throughout from Shannon, Kate and Danielle in the office. Would definitely recommend using them if you are wanting to go down a different energy route.
jackie B.
6 months ago
Cinergi recently replaced my air source heat pump and I couldn’t be happier with the whole experience. Right from the start, Megan and Katie were fantastic – they clearly explained the proposal and costs, making everything easy to understand. Elliott then came out to carry out the heat loss calculations, which gave me real confidence in the system being right for my home. The installation team were brilliant. Adam and Tommy did an excellent job with the plumbing, and Lewis completed all the electrics to a very high standard. Adam even went the extra mile by extending the original concrete base for the unit – nothing was too much trouble. My house is now warm and cosy, and even my dog loved them all – he got so excited every time they arrived! Thank you again to the whole Cinergi team – absolutely fabulous service. I’m very, very happy.
Alistair R.
7 months ago
Cinergi replaced our oil boiler with a Vaillant heat pump during February, from my initial visit to their showroom through to commissioning of the system 3 weeks ago I have nothing but praise for the team at Cinergi. Everyone I interacted with at Cinergi has been of the highest calible, but what I valued most was their flexiblity and pragmatism to install a heatpump that worked for me and my needs. If I could give them 6 stars I would , thankyou Cinergi !
Dominik P.
7 months ago
Just had my air source heat pump fitted by Dave at Cinergy and I couldn’t be more happy with the hole process and end result, he was extremely help full making sure I was well informed through out the project and did a very impressive job. I also appreciate the help from the office at Cinergy especially Sofia who put up with me through the hole pricing process and answer all of me questions. Thank you Cinergy Thank you Sofia Thank you Dave !
Martin W.
7 months ago
Superb customer service and extremely tidy install. Thank you Liam for guiding us through the purchase, James for survey and Jack and Ben who expertly installed my new system!!
Peter A.
7 months ago
Cinergi have just completed installation of a solar / battery / EV charger system on my home. I’ve been discussing various options for a few months, and their technical / sales staff (George and James) spent a lot of time explaining how it could work, and talking through options. They were very clear, and helpful, and not at all pushy. When we decided to go ahead, they were efficient in getting the paperwork out, booking the project in and making all the arrangements. The scaffolders did a good job getting set up, and the installation team were excellent. They came on time, built the project that they were meant to do, and finished on time. They were really impressive in looking for (and finding) efficient routes to run the cables - in the loft space and finding a way to get into the space under the ground floor to run a cable under the house, so that overall the system installation had minimal visible impact on the house. They commissioned it, explained how it all worked, and set up the apps very clearly. They left a good clean job, and everything seems to be working really well. A shout-out for Alex fitting the panels, Jack the electrician, and the two apprentices Louis and Ben. Well done to all !
Charlie P.
7 months ago
We have just had a new air source heat pump installed by our new friends at Cinergi. This pump replaces our old oil boiler so we gain a lot of space where the boiler sat as well as the oil tank in the garden. Dave and colleagues looked after the physical installation and we were very impressed with their attention to detail and consideration during the whole process. The administration team back in the office looked after all processing of the paperwork and government grant application very efficiently as well. If you live anywhere near Romsey and are thinking about a modern clean source of heating for your house I can''t recommend Cinergi too highly. They know what they're talking about with this technology and do the work with the least hassle and disruption to your life. We are delighted with the result. Update March 2026 Lewis from Cinergi has just installed an EV charger for us. We were so pleased with heat pump installation that Cinergi got the contract for this project as well. Very tidy work by Lewis and we are delighted with the result.
Liz R.
7 months ago
We recently used Cinergi to replace our gas boiler with a heat pump and solar panels. The installation was excellent and the team friendly and knowledgeable. Special thanks to the two young men who put the solar panels on our roof in torrential rain without complaint. And also a big thank you to John, and Carl, Jack, Alex and Louie. James, Elliott and Sophia gave us the confidence to use Cinergi.
Kevin B.
8 months ago
Just had a heat pump installation and the team did a great job from start to finish. They were able to design a system that fitted into our relatively small mid terrace house (which a large energy company were unable to), and deliver it soon after the order was placed. They worked quickly and considerately, and accommodated our requests as best they could. Thanks to Adam, Dan and the whole team including the office team who were very helpful all the way through. Would definitely recommend Cinergi to others.
Geoff
8 months ago
Solar side of install all done great. Installed by Jack Alex Ben Louie.

Frequently asked questions about Ground source heat pumps

Both have pros and cons. GSHPs are more efficient due to soil temperature being more constant than air temperatures, however, they require a lot of space and are expensive to install, so for average sized properties an air source heat pump is a better solution.

Yes, the pipework (either horizontal loops or boreholes) are buried at a depth where the ground temperature is consistent all year round, thereby the winter months do not effect the efficiency of ground source heat pumps. This can be viewed as both a postitive and a negative thing - for example if you are looking to heat a swimming pool during the summer months then an air source heat pump will be more efficient than a ground source heat pump due to the ambient temperature of the air vs that of the ground.

Yes. A GSHP runs on electricity so generating your own power will make your property ever more self-sufficient and green!

Horizontal GSHP loops are generally buried of a depth of around 1.2m (depending on the ground type and condition) and can cover an area of anything up to 100m x 100m depending on the size of the property. Borehole systems can vary between 80m to 200m in depth and multiple can be used to heat larger properties.

MVHR can be installed in a broad range of commercial properties, with many benefits. Following the pandemic, constant ventilation is of utmost importance in public buildings. MVHR also reduces a buildings heating and cooling demands, so offers a valuable cost and energy saving.

Yes, a GSHP can provide hot water for a central heating systems containing radiators. A system designed for radiators will typically be designed at between 45-50 degrees celsius; as part of our design process, we will ensure all radiators are sizes correctly.

Yes, a GSHP can even be used as a cooling system in warmer months.

According to the Energy Saving Trust, a GSHP can save you up to £870 per year when replacing an old gas boiler (correct as of October 2022).

Fitting underfloor heating is a more efficient heat distribution solution than traditional radiators as it requires lower temperatures. Heat pumps operate at their most efficient at lower temperatures, so it makes an ideal pairing.

You need a large plot of land for a GSHP. Just how much land depends on the size of your property and whether you opt for horizontal loops or vertical boreholes. Horizontal loops are most common and cheaper to install, and require anything up to 1,200 square metres. You will also need plant room space for the pump which is larger than a traditional boiler, sometimes as large as a kitchen appliance.

There are two instances where planning permission is required for GSHP installation - if it covers more than 0.5 hectares of land, or if you live in a listed building.

The Boiler Upgrade scheme offers £6,000 towards a renewable heating system such as a ground source heat pump. The installer must be MCS accredited, like Cinergi.

Want to speak to us about our Ground Source Heat Pump Systems?

To find out more about more about our wide rang of energy and heating solutions, either schedule a call or get in touch via our contact form today.

5.0 based on 154 reviews on

Cinergi Knowledge Hub

Learn the basics about air to water heat pumps, and gain deeper understanding about their costs, efficiency, and benefits.

Cinergi is pleased to welcome Hannah Walsh as our new Business Development…

The UK government has announced a temporary increase to the Boiler Upgrade…

If you’re thinking about installing a heat pump, it’s worth considering underfloor…

  • Heat pumps are up to 400% efficient. This refers to the Coefficient of Performance (COP), which measures heat output compared to electricity input. Actual performance varies depending on property insulation, system design, and outdoor temperatures. Typically, for every 1kW of electricity used, around 4kW of heat can be produced under optimal conditions.
  • More than three times more efficient than fossil fuel boilers– see the Energy Saving Trust
  • Ofgem ranks Cinergi in the top 1% of heat pump installers – read more here
  • Solar panels can save £xxx a year – TBC
  • Carbon emissions from heat pumps are around 80% less than carbon emissions from a gas boiler. This carbon saving increases when switching from oil or LPG heating to a heat pump. See cat.org.uk for details.