Sunamp Heat Battery
Reliable hot water, anytime with the energy saving Thermino range.
Switch to Electric and Enjoy Instant High-Pressure Hot Water
Conventional water heaters are often oversized, inefficient, and costly to run. Sunamp electric heat batteries redefine hot water storage with innovative thermal battery technology.
Compact yet powerful, they provide instant hot water, free up valuable space, lower energy bills, and integrate perfectly with renewable energy sources for a more sustainable home.
Sunamp electric heat batteries deliver more than just hot water
Choosing an electric hot water heater comes with a range of advantages designed to enhance comfort, efficiency, and reliability
- Unlimited Hot Water
- Energy Savings
- Compact, Space-Saving Design
- Total Peace of Mind
Works with boilers, heat pumps and solar PV
Works with grid electricity and solar PV
Works with heat pumps and boilers
Is a Sunamp Right for Your Home?
Sunamp heat batteries provide an efficient way to store energy and deliver hot water when you need it. They are an excellent solution for:
- Properties with limited space
- Low water pressure areas
- Gas not available
- Modern homes
- Reduces costs
The Perfect Partner for Solar Energy
Pair your Sunamp Heat Battery with solar panels to create an efficient and sustainable hot water solution. Excess solar energy is captured and stored as heat, providing reliable hot water even when the sun isn’t shining.
This smart combination helps reduce reliance on grid electricity, lower energy costs, and support a more environmentally responsible home.
Domestic
Solar
Three Phase
Electrical Supply
Heat
Pumps
Electric Heating Installation: Questions & Answers
These are the most commons questions asked when enquiring about electric water heating
Can an electric water heater provide enough hot water for larger households?
Yes. The Sunamp heat battery is available in a range of capacities to suit different household sizes and hot water demands. With storage options from 3.5 kWh to 14 kWh, it can comfortably supply hot water for showers, baths, and daily household use, making it suitable for both smaller homes and larger family properties
How much space does an electric water heating system require?
The Sunamp water heater is designed to save space, taking up to four times less room than a traditional hot water cylinder. Its compact footprint allows it to fit neatly into utility rooms, airing cupboards, and other tight spaces, making it an ideal solution for homes where space is at a premium.
How does the Sunamp Heat Battery work with solar panels?
The Sunamp Heat Battery captures surplus electricity generated by your solar panels and stores it as thermal energy using advanced phase-change material (PCM) technology. This stored energy is then used to provide hot water whenever you need it, helping to reduce reliance on grid electricity, lower energy bills, and maximise the value of your solar generation. The result is a highly efficient, low-carbon hot water solution for your home.
Is Sunamp suitable for homes without solar panels?
Absolutely. While Sunamp integrates seamlessly with solar PV systems, it also operates efficiently using off-peak tariffs or standard mains electricity. This makes it an excellent solution for homes without solar panels, providing reliable hot water on demand while helping to reduce energy waste and running costs.
Building the Future of Renewable Energy
We work hard to make sure all our customers receive the time and attention they require to choose the most suitable technology solution for their needs.
We offer cutting-edge products, award-winning customer service and provide a team of qualified and accredited engineers. Our expert advice enables you to make the right renewables choices for your home or business, delivering renewable solutions for everyone.
We are passionate about customer satisfaction
As seen independently on Google reviews
EXCELLENT
Based on 17 reviews
Posted on Google![]()
Jen KTrustindex verifies that the original source of the review is Google.
I honestly can’t recommend Green Squirrel Energy highly enough! From the very first survey, I felt like I was dealing with people who genuinely cared about doing the job properly rather than just making a sale. After discovering our roof had been poorly installed by another company, they took the time to explain everything clearly, showing us exactly what was wrong and why it needed replacing. There was never any pressure—just honest, professional advice that gave us complete confidence in their recommendations. The workmanship has been absolutely outstanding. Our new roof looks beautiful, and the integrated solar panels are so sleek that they blend in perfectly. The team also installed a Tesla Powerwall and handled all of the complicated electrical upgrades, including liaising with the DNO and sorting out the export limitation process. They made what could have been a very stressful experience completely hassle-free. Every member of the team was friendly, respectful and incredibly hardworking. They kept us informed throughout the project, left everything tidy each day, and their attention to detail was second to none. We now have total peace of mind knowing our home is protected by a properly installed, high-quality roof, and it’s wonderful seeing our electricity bills reduce while generating our own clean energy. If you’re looking for a company that values quality, honesty and customer service, Green Squirrel Energy is the one to choose. Thank you to everyone involved—you’ve completely transformed our home, and I wouldn’t hesitate to recommend you to family and friends!Posted on Google![]()
MITrustindex verifies that the original source of the review is Google.
Recently had a Worcester Bosch air conditioning system installed and I'm really happy with it, installation was carried out professionally, with great attention to detail. Anthony, Alan and the guys were great from start to finish, they took pride in delivering a first-class installation. Had it for over a week now and It’s made a huge difference to my room and the upstairs area, delighted with both its performance and the quality of the installation. A special mention also goes to the Green Squirrel Energy Project Manager, who was communicative throughout, kept me informed every step and worked hard to find the right solution during a period when there was an equipment shortage. Especially in the summer where there is demand and waiting lists elsewhere, they gave me a date within 2 weeks and kept their promise, their commitment to customer service and problem-solving really stood out. Overall, an excellent experience! Highly recommend them to anyone considering air conditioning installationPosted on Google![]()
Callum CoffinTrustindex verifies that the original source of the review is Google.
We recently had Green Squirrel Energy install a Mitsubishi heat pump and new hot water cylinder, allowing us to go completely gas-free. They also upgraded our house to three-phase power and installed new consumer units, supporting our Tesla Powerwall and future electrical needs. The team was professional, knowledgeable and a pleasure to deal with. The workmanship was excellent and everything was completed on schedule. We’re delighted with the result and wouldn’t hesitate to recommend Green Squirrel Energy. The quality and attention to detail has been outstanding.Posted on Google![]()
David K-RTrustindex verifies that the original source of the review is Google.
Outstanding Air Conditioning Installation in High Legh – A Five-Star Experience. We recently had air conditioning installed in our family home in High Legh by Green Squirrel Energy, and we genuinely couldn’t be happier with the entire experience. From the very first enquiry, the team were professional, friendly, and incredibly knowledgeable. They took the time to understand our home, our needs as a family, and how we wanted to use the system throughout the year. Nothing felt rushed or pushed – just honest advice and clear guidance. The installation itself was carried out to an exceptionally high standard. The engineers were punctual, respectful of our home, and worked with real care and attention to detail. Every aspect of the job was completed with precision, and the finish is absolutely flawless. You can tell straight away that they take real pride in their workmanship. What really stood out to us was their reliability. Everything happened exactly when they said it would – from initial survey to installation day. Communication was excellent throughout, and we always felt informed and confident in the process. The system itself has transformed our home. It’s quiet, efficient, and provides perfect comfort for the whole family, whether we’re cooling down in the summer or adding a bit of warmth in the colder months. Green Squirrel Energy delivered not just a service, but a genuinely outstanding experience. Their professionalism, reliability, and exceptional workmanship set them apart, and we wouldn’t hesitate to recommend them to anyone considering air conditioning installation. A truly five-star company.Posted on Google![]()
ROBERT SYMONSTrustindex verifies that the original source of the review is Google.
“We recently bought a new home that needed a complete renovation, and we wanted to create a highly energy-efficient property with integrated underfloor heating, solar panels, battery storage and an air source heat pump. Green Squirrel Energy designed and installed the entire system, and the experience has been fantastic from start to finish. The team were professional, knowledgeable and easy to work with, coordinating everything seamlessly during the renovation. The quality of workmanship has been excellent, and we’re delighted with the finished result. I wouldn’t hesitate to recommend Green Squirrel Energy to anyone looking for a complete renewable energy solution.”Posted on Google![]()
Tessa YatesTrustindex verifies that the original source of the review is Google.
When my gas boiler broke down and was not worth repairing I knew it was time to investigate an air source heat pump. I have a dormer bungalow built in 1962. 5 months before I had installed a new insulated roof, solar panels and a 9kW battery so a heat pump is in line with my eco values. I had 3 quotes and each one suggested that a different level of work was required concerning changing the pipework and radiators. Alan from Green Squirrel’s approach made the most sense to me. He was recommended to me by Octopus. From the beginning he was highly attentive. He understands the importance of the quality of the install in order for the heat pump to work well. Alan invested many hours in the planing stage before I gave him the job. He appreciated the huge financial investment so was keen for me to understand how this system works and to ensure that my home was made suitable. The whole team were outstanding and the work was completed in the time quoted. As I needed new pipework there was some disruption but all was made as easy as possible. I felt that both Alan and Simon, the engineer, really wanted me to be happy with all the work and for everything to work well. So far the heat pump is working perfectly though I have not had my first winter yet. I have felt very happy with the after install service as Alan has kept in touch and encouraged me to contact him with any questions or issues. I have no difficulty in recommending their work.Posted on Google![]()
Greg MajorTrustindex verifies that the original source of the review is Google.
I recently had a full renewable energy system installed by Green Squirrel Energy at my house in Lymm. I first reached out to Alan at Green Squirrel about 9 months before I actually needed anyone on site. It was right at the start of a full house renovation and, even at that early stage, I could tell they were the right fit. Alan didn’t just give me a generic quote; he went away, had the proper calculations done, and worked through a solid plan for the property. We had a bit of back and forth on the final design—which I really appreciated—because it meant we landed on a setup that actually suited the house rather than a "one size fits all" solution. The project was massive: Solar, Powerwall 3, a full heating system, including a heat pump and underfloor heating throughout the downstairs. The installation was handled by Simon and his team, and they were great. If you’ve ever done a big renovation, you know how much of a headache it is coordinating different trades, but the Green Squirrel guys worked brilliantly with my builder to keep things on track. They weren't just in and out; the quality of the finish was clearly important to them. Now that the dust has settled and the longer days are finally here, the system is performing exactly as Alan promised. The house is perfectly comfortable year-round (the underfloor heating is a game-changer), and seeing the solar and battery kick in now the sun is out is a great feeling If you want renewable tech installed by a local firm that are knowledgeable, high quality and actually seem to care, I’d highly recommend Green Squirrel.Posted on Google![]()
Andy BaconTrustindex verifies that the original source of the review is Google.
Alan and his team did a fantastic job for us. The advice was sound, the work well planned and expertly delivered by considerate professionals. There was none of the common heavy sales patter, instead considered unpressurised advice. Alan went out of his way to advise on any (occasional and unavoidable) changes to plan. He also managed the project between the different parts of his team (e.g. roofers, electricians, etc.). I would have no hesitation in recommending him and the Green Squirrel team.Posted on Google![]()
Paul SherryTrustindex verifies that the original source of the review is Google.
Very good advice and support from Green Squirrel Energy. Background to this - heat pump installed in 2012 (fairly early adopter). The heat pump has always worked ok - in my view - but I have not been so confident in the control system. We have struggled to get house warm. With increasing frustration with the lack of F2F support from original installer I searched online to see if anyone locally and found Green Squirrel Energy from Knutsford (we live close). Contacted them more in hope than expectation - but they quickly phoned back and I engaged them to do a diagnostic on the system. Simon came to visit and they came up with a plan to improve - which wasn't going to be cheap...but I was up for that. Credit to them - they discussed amongst themselves and came to the view that although their proposal was perhaps ideal, it was difficult to guarantee the outcome given the original install. They then came up with a more cost effective solution with which I agreed to proceed. Credit to them that they didn't try to sell me the most expensive solution.... The solution was a new (Hive) control system which Simon and their electrician installed in a morning. I have also installed Hive TRV's on all the radiators. (I should also mention that as part of this work I have also undertaken a DIY change to 2 downstairs radiators and have installed a Strada Hybrid - so I also need to give a 'shout out' to David and his team at the Radiator Centre, Leamington Spa) Alan and Simon also took the time to educate me on how to get the best out of air source heat pump system by leaving it running 24/7 - I was treating it like a gas fired central heating system, but no-one had ever told me different. The result has been transformational - we now have a comfortably warm home for the first time in 13 years. Yes it's costing some money to run, but we were spending a fair amount before and weren't warm... I am very pleased with the service and support we have had from Alan and Simon and give them respect for coming up with a more cost effective solution when they could have sold me something more expensive.Posted on Google![]()
Anne MarshallTrustindex verifies that the original source of the review is Google.
I used Green Squirrel as a one stop shop for the design and installation of my underfloor heating system combined with an Octopus air source heat pump. The whole process was very efficiently managed . The installers and technical leads, Simon Fagan and Andrew Hassell worked very efficiently on the install, showing me how everything worked and demonstrating the Octopus app (which is, like everything I have dealt with from Octopus, absolutely fab!). I am looking forward to a very cosy winter in my new house. Many thanks to you all.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

