My recent experiences with this company was very positive. Shontal despatched an engineer quickly and Keith diagnosed a problem with a leaky valve , ordered a new one and in less than a week job... See more
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Keith and Gino came to fit a thermostat and timer. As usual they did a great job. Explained how timer worked and left room tidy. They were polite and helpful. Both had worked on the set up of our sy... See more
Keith came out to service our heat pump system. Keith was very knowledgeable and answered all of my questions. He was very polite and respectful of my property . We had to arrange another visit... See more
The previous company that we used to service our air source heat pump and boiler ceased trading so I approached Upvolt. What a superb company. They dealt with my request promptly and efficiently. The... See more
Company details
- Solar Energy Equipment Supplier
- Energy Equipment and Solutions
- Green Energy Supplier
- Solar Energy Company
- Solar Energy Contractor
- Solar Photovoltaic Power Plant
Written by the company
Upvolt helps homeowners take control of their energy with smart solar, battery storage and home energy management systems designed for your home. We know installing solar or upgrading your home energy system can feel confusing. There are lots of companies, lots of products, and it’s hard to know who to trust. The industry has become a race to the bottom in many places, with systems installed quickly and support disappearing afterwards. That’s not how we work. We provide a full end-to-end service, from system design and installation through to grid connection, monitoring and long-term support. Our goal isn’t just to install a system, it’s to build something that works for your home and continues working for years to come. Our regional teams bring over 15 years of experience in solar and home energy systems, combined with the support of a wider national network. This allows us to deliver high-quality installations while still providing local service and ongoing support. We believe homeowners should feel confident and informed when making decisions about their energy, not pressured or confused. That’s why we focus on honest advice, quality installations and long-term customer support. We’re not just here for the installation. We’re here for the life of your system.
Contact info
A2 Ropemaker Park, Hailsham, BN27 3GU , London, United Kingdom
- +44 204 538 4142
- contact@upvolt-energy.com
- upvolt-energy.com
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
Replied to 66% of negative reviews
Typically replies within 1 month
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Very pleased with OHM ENERGY from start…
Very pleased with OHM ENERGY from start to finish. Colin came and done the survey with an obvious knowledge, but wasn’t your normal pushy salesman. The quote came quickly and and still no pressure on us to decide. The 2 chaps who done the installation done the job with a smile and were very clean and tidy on site and when it was going to be noisy let us know so we vacate if we wanted. They were happy to answer any questions I had and did a very smooth and professional job. I have nothing negative to say and would be happy to recommend them.
respect total de ses engagements envers…
respect total de ses engagements envers ses clients. franchment le meilleur de tous 👍
Air Source Heat Pump installation by OHM Energy
OHM Energy installed out Air Source Heat Pump last year. Very happy with the end result which is working very well. It was a complex project and they overcame every challenge. Extremely polite, professional, down to earth and experienced. Would thoroughly recommend.
Promises not delivered on
Promises not delivered on. Revised estimate promised in a few days, email asking if I still wanted it 5 weeks later! But that time I had found a more reliable company.

Reply from Upvolt Energy
Contact et explications clairs
Contact et explications clairs. Merci à Ohm Energie
simple,efficace et joingnable tres…
simple,efficace et joingnable tres ravis du service et de l'ecoute clientelle
OHM ENERGIE IS A GOOD PROVIDER OF…
OHM ENERGIE IS A GOOD PROVIDER OF ENERGIE AND THE TREATMENT OF CLIENTS IS VERY GOOD.
Very unprofessional
Very unprofessional. An hour and a half late then decided they couldn’t do the project. Poor excuse given that contradicted their previous comments to me.
Complete waste of time.

Reply from Upvolt Energy
Professional outfit
I found the surveying and the installation to be carried out in a highly professional manner. The engineer was not only knowledgeable but also helpful in explaining things to me. They also left my house clean and tidy each night.
Heat Pump Installation - Perfect from start to finish
Ohm Energy removed our combi gas boiler and installed an Ecodan air source heat pump and water tank. A faultless job from start to finish, with particularly trying conditions in week one working in record-breaking high temperatures. Particular thanks to Isaac, Jamie, Keith and Paddy who were here for the longest, but the whole team were great. Ohm installed our solar panels 8 years ago and we didn't hesitate to go back to them as they did such a great job last time - those panels are still pumping out power as effectively as they did on day 1. Ohm are very honest about what is possible and what is not, their work is professional and tidy and we recommend them to everyone. Thank you so much guys - we'll be back for a battery pack!!
Très content
Just had a brand new air source heat…
Just had a brand new air source heat pump installed (Ecodan) to replace an oil boiler, plus all the new parts that go with it like hotwater tank etc. Shopped around for quotes but OHM were easily the most knowledgable and approachable, and good on price too. Isaac was fantastic in doing all the plumbing, and the electricians also did their bit well. Always on time and always tidy and clean. Thank you so much to the whole team. I would highly recommend them.
Fantastic, start to finish. Heat Pump Install
Just had an Air Source Heat Pump installed by OHM to replace our oil boiler. They have been great from start to finish, through consultation to advice at every stage. Been difficult times due to Covid and delays in the green homes grant so was even happier when they helped us into the OVO scheme instead, which meant we could speed up the install and meant we are better off than going with the grant and RHI. They were also very competitively priced compared to the other quotes we got. The whole team have been great during installation week with minimal disruption and consideration of our needs all working from home throughout, exceeding our expectations. Very, very professional and could not recommend them highly enough.
I called ohm energy initially as my…
I called ohm energy initially as my heating wasn't working. Emma sqeezed in an appointment in for me for the next day. Keith diagnosed the problem very quickly. He then returned later in the afternoon with the part and sorted my heating. I was over the moon to say the least. Very highly recommended company. Thank you so much for fixing it so quickly.
Loreta has been a wonderful support…
Loreta has been a wonderful support throughout the process. Thank you very much!
Good technicians
Good technicians, with a very kind, sympathetic back up from the girls in the office. Thanks a lot.
Completely unprofessional
Completely unprofessional, cancelled there first appointment then didn't show up for the second.
Spot on!
All my enquiries were successfully answered by Jason who was very friendly and professional from beginning to end.
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