Thermal Earth Ltd

Well over ten years ago Thermal Earth installed a heating system to the ground and first floors of our Barn Conversion. This included laying of insulation, pipework loops and liquid screeds. A borehole Ground Source Heat Pump was selected, the equipment being of the best quality including Domestic Hot Water. Its operation has been faultless and inexpensive to run. Thermal Earth are still in regular contact to arrange annual service checks. These are carried out efficiently by friendly helpful staff. This firm has recently replaced a water damaged Heat-pump system for a near neighbour, the original installer being totally uncooperative. I am so pleased that the new equipment has the same manufacturer as our system, and that Thermal Earth is still around to guide us, having recently moved into bigger premises.

Great service from the engineer who helped us with our heat exchange unit which needs a new part. Our biomass boiler is regularly serviced by Thermal Earth engineers who has always been efficient and extremely capable.

Great service on site with knowledgable and friendly engineers. Always help to improve the running of our heat pump system. Missing one star as you are required to pay for engineer mileage and I live far from their base, so often adds noticeable cost to my bill, so will consider local providers too.

Daniel did an excellent job of servicing our solar thermal system and left everything neat and tidy. He was very friendly and inspired confidence and took the time to answer all my very many questions etc. We would definitely recommend him. Thanks so much! V and B Hamilton

I had a ground source heat pump, underfloor heating system, solar panels and a battery storage system installed by thermal earth. Tony and his team designed the system and I can only praise his work force. From the bore hole drilling team to the electricians and the plumbers. They all know their stuff and have been professional, helpful and gone that little bit extra on site on little things such as hiding cables and pipes to make the installation as tidy as possible. The system is up and running and appears to be working well. So it’s a big thumbs up from me to Tony and his team.

DO NOT CHOOSE THERMAL EARTH

I waited until moving out before writing this, because what my family endured over two winters was unacceptable — and the responsibility for that lies firmly with Nick Salini, director of Thermal Earth. We bought a new-build on the Aspen Grove estate in Rumney, Cardiff in November 2022. As winter temperatures dropped, we had no heating and repeatedly lost hot water. The radiators were stone cold. Not “low temperature” completely cold. This continued across two full winters. Apprently, I was the only person on the estate with this problem - which was just one of the lies I was told. Our energy supplier at the time, Sero, repeatedly reset the system, which would temporarily work for a day before failing again. When I was eventually put directly in contact with Nick Salini, I was told there were “no alarms” on the system. When an engineer attended to carry out the heat pump service, more than 60 stored faults were found. According to Nick Salini these were from installation. For two years, despite repeated reports that we had no heating, no decisive action was taken. I requested service reports multiple times and they were not provided. I was given system data that could not possibly have reflected the reality of my property while we were living in a freezing house. It ultimately required the estate management company to physically intervene to get an engineer sent out. The fault was a failed weather compensation unit, a fundamental component that prevented the heat pump from increasing water temperature as outside temperatures dropped. In other words, the system was incapable of heating the house properly in winter. During this time, we were forced to rely on electric heaters and the boost function simply to survive, leading to a £543 electricity bill in one December alone, despite having no functioning heating system. We endured two freezing winters with two children under five, one of whom is autistic and struggled to understand why he had to sleep wearing a coat. Mr Salini was aware of our circumstances. There was still no urgency, no accountability, and no meaningful support or compensation offered. In my experience, this was not just a system failure it was a failure of leadership and responsibility. The prolonged inaction, denial of faults, and refusal to properly address the situation sit squarely with the director. I would strongly advise others to think very carefully before placing their trust in Thermal Earth. Nick Salini does not care about his customers, all he cares about is the money in his pocket. IN RESPONSE TO YOUR BELOW MESSAGE: You did not respond promptly. You allowed my family to endure two entire winters without proper heating. Do not attempt to rewrite history. The “hot tub” you are referring to was a Lazy Spa — inflated at the beginning of summer and packed away at the end of summer. It was temporary and seasonal. The other appliances you mentioned were electric heaters. We had no functioning heating system, and you are fully aware of that. We used those heaters out of necessity, not luxury. This has never been about money. Your continued lack of action directly affected my children. That is something I take very seriously and very personally. I do not wish to receive any further correspondence from you!!!

Having been good in the past I am now…

Having been good in the past I am now really disappointed with getting absolutely no responses from this company when trying to fix the issue of online access that would allow them to check details on the heat pump that they sold into my premises when it next fails (as it has done twice previously). Feels like if it’s not a new sale then no interest … In response to your reply, please check your emails with ref SOR007869 spanning period starting 03/04/2025 with Charlie (who was very helpful in managing my purchase of a replacement part) through to 16th April 2025 where Daniel repeatedly failed to respond on both phone calls and emails and still hasn’t responded (even after I copied Charlie in after several attempts when questioning if Daniel still worked at Thermal Earth) Update after contacting ThermalEarth after the invitation to re-engage: I spoke with Nick who made best efforts to resolve the issue and was communicative. In the end it was Chat GPT that I got the solution from but appreciate the effort made Nick at ThermalEarth even without the technical knowledge of what was the likely cause of the issue (it was actually due to the heat pumps using old tech half duplex network chips that don't shake hands well with modern broadband routers that expect full duplex and the issue was resolved by inserting a basic ethernet hub between the two).

Excellent service

Recent experience of dealing with Thermal Earth have been excellent. A service on our log biomass boiler this week carried out by Dan was very thorough and he helpfully showed me settings and features of the boiler that I didn't know existed even though we have had the boiler 10 years. We have used a number of different companies to do the service over the years and this was the best and most comprehensive yet. The engineers in the office were also helpful with technical enquiries last year. Would recommend this company.

Excellent Solar Thermal Servicing

Daniel from Thermal Earth did an excellent job servicing our solar thermal system and left everything neat and tidy. He was very friendly and inspired confidence and took the time to answer all my questions and gave very useful advice. We really appreciated the service and would highly recommend him. Thank you so much! V and B Hamilton

Servicing of our air source heat pump

Dan our engineer arrived early due to a cancellation but informed us ahead of time . He was excellent, efficient and very informative.