We're a year into our ASHP and solar/battery install from EPC now and everything is going perfectly. The system is great, service from the entire team has been brilliant - cant' recommend them highly... See more
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Review summary
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What people talk about most
Reviews shaping this summary
We had a heat pump installed by EPC several years ago. So when we recently had an issue, I called and spoke to James; his response was very swift and he helped me to sort the problem myself, without i... See more
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An excellent engineer is Mark, fitted the additional remote operating I asked for hub with ease and led me clearly through the on line set up and functioning. The actual annual service was very thoro... See more
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Mark arrived on time to carry out the first service to our heat pump and heating system. He was both competent and knowledgeable and when the service was completed asked if there was anything I wanted... See more
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Company details
Written by the company
Elevate to Eco-Smart Living Step into a greener lifestyle with our user-friendly, sustainable energy saving solutions – perfect for the modern, environmentally aware home. Switch to Solar Power Start generating clean, money-saving energy from your roof with solar panels (or even add a battery). We handle the technical stuff. Switch to Heat Pumps Reduce your carbon footprint from the comfort of your cosy home. Heat pumps are not the future, they are the now.
Contact info
15-17 Russel Way, CM1 3AA, Chelmsford, United Kingdom
- 01245408792
- info@epc-improvements.co.uk
- epc-improvements.co.uk
4.8
Excellent
97 reviews
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Replied to 100% of negative reviews
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Very impressed with the engineer very…
Very impressed with the engineer very knowledgable and charming
February 10, 2026
Reply from EPC
Hi Naomi, thank you so much for the 5-star review ⭐️
We’re really pleased to hear you were impressed with the engineer during your heat pump service — we’ll be sure to pass on your kind words. Knowing you found him knowledgeable (and charming!) genuinely means a lot.
Thanks again for choosing us, and if you have any friends or family looking for a reliable heat pump, solar or battery installations and/or servicing, we’d really appreciate you recommending us.
Annual Service
Mark arrived promptly and conducted a thorough service of our heating system, both inside and out. He took the trouble to explain his actions and suggested ways in which we might efficiently operate our heat pump. I can thoroughly recommend Mark and his company.
February 3, 2026
Reply from EPC
Hi John, thank you so much for the 5-star review ⭐️
We’re really pleased to hear you were happy with the service and that everything was carried out thoroughly both inside and out. It’s great to know the engineer took the time to explain what he was doing and gave you helpful advice on running your heat pump as efficiently as possible — that’s exactly the level of service we aim for.
Thanks again for choosing us, and if you have any friends or family looking for reliable heat pump, solar or battery installations and/or servicing, we’d really appreciate you recommending us.
Highly Recommend
What an amazing experience. This company know what they are doing. So glad we found them. Responsive to any email, always followed up with a phone call, to make sure we understand the email. Clear and detailed quote. Look nowhere else!!
February 4, 2026
Reply from EPC
Thanks so much, Cliff — really appreciate you taking the time to leave such a great review.
We’re big believers in clear communication and proper follow-up, so it’s great to hear that came through from start to finish. Making sure everything’s understood before moving forward is non-negotiable for us.
Thanks again for choosing us and for the recommendation — it genuinely means a lot. If you ever need anything in the future, you know where we are 👍
Excellent & Informative experience
Marc, was excellent in reviewing our requirements for the hot water and heating system at our new build house. He gave good recommendations with all the requested supporting details and estimates. Very attentive and supporting throughout.
February 2, 2026
Reply from EPC
Thanks very much, Eamonn — really appreciate the feedback.
Marc takes a lot of pride in properly understanding a project before making recommendations, especially on new builds where getting the system right first time really matters. It’s great to hear you found the advice clear, detailed, and well supported.
Thanks again for trusting us with your new home. We’re always here if you need anything as the build progresses.
Best in the business
A previous company bodged the installation of an air source heat pump with underfloor heating throughout my house and it was replete with issues.
After a year of back and forth with this other company, I asked James from EPC improvements to do an independent review of the installation. He identified all the faults and proposed a remediation plan. After one day's work, everything works perfectly - the flow rate is optimised so it runs quietly, I can control all my temperature zones from an app, the pressure is at target, the configuration is correct.
I'm incredibly relieved to have found James and EPC improvements. James has been installing heat pumps for two decades and his knowledge is top shelf. If you are considering an installation, or facing issues with a previous company, EPC improvements are peerless.
January 27, 2026
Unprompted review
Reply from EPC
Thanks so much, Jared — that really means a lot.
Unfortunately, we see situations like this more often than we’d like, and it’s exactly why we take such a methodical, engineering-first approach. I’m glad James and Mark were able to get to the root of the issues quickly and put a proper remediation plan in place — and even better that everything is now running quietly, efficiently, and exactly as it should.
Your comments about James’s experience and attention to detail genuinely matter to us. If anyone’s on the fence about a heat pump install or dealing with problems left behind by others, we’re always happy to give honest, independent advice.
Thanks again for the trust and the recommendation.
It did what it agreed to do promptly…
It did what it agreed to do promptly and efficiently, as far as I can tell. A helpful and considerate engineer.
January 21, 2026
Reply from EPC
Thanks, Mr Cook — we appreciate you taking the time to leave a review.
Doing exactly what we say we’ll do, when we say we’ll do it, is the baseline for us, so it’s good to hear that came across on the day. I’ll be sure to pass on your comments to the engineer as well.
Thanks again for choosing EPC Improvements.
EPC Annual Service
The Engineer, Mark, was friendly and efficient in servicing the system - explaining what he was doing and what to do to avoid a blocked drain from leaves in the ASHP.
January 21, 2026
Reply from EPC
Thanks, Simon — really appreciate you leaving a review.
Mark is great at making sure customers understand not just what’s been done, but how to keep the system running smoothly long term, so it’s good to hear that came through. Simple things like keeping drains clear can make a big difference to performance and reliability.
Thanks again for booking your annual service with EPC Improvements — we’re here whenever you need us.
Excellent Customer Service
Just wanted to say a big thank you to the team at EPC for arranging one of their technicians/fitters to come out to look at our battery and get it back online.
The guy that came was amazing and so helpful and polite and we are back up and running.
Just wanted to make sure I passed on this feedback. People often only get in touch to complain, but feel it is just as important to notice the good points.
We are very grateful for you and your team with our whole solar and battery journey and your professional support from start to finish. It has been exemplary and we cannot fault you!
January 8, 2026
Reply from EPC
Thanks so much, Sam — we really appreciate you taking the time to share this.
Getting systems back online quickly and properly is exactly what we’re here for, and it’s great to hear the technician looked after you so well. I’ll make sure your feedback is passed on to the whole team — comments like this genuinely matter.
You’re absolutely right that people tend to speak up when things go wrong, so we’re especially grateful you called out the positives. Thanks again for trusting EPC with your solar and battery setup — we’re glad to be part of the journey and we’re always here if you need us.
Reply from EPC
Thanks, Sunsanna — we really appreciate you taking the time to leave a review.
Great to hear you found everything quick, efficient, and thorough — that’s exactly what we aim for. We’re always pushing ourselves to improve, so if there’s anything we could have done better to earn that fifth star, we’d genuinely love to hear it.
If you have a moment, feel free to drop Danny a quick note at danny@epc-improvements.co.uk
. Any feedback helps us raise the bar.
Thanks again for choosing EPC Improvements.
Reply from EPC
Thanks, Stephen — really appreciate the review.
Clear communication and a helpful team are non-negotiables for us, so it’s great to hear that stood out. Thanks again for choosing EPC Improvements.
Service of heat pump
Mark was very thorough and gave us clear easy to understand explanations.
He was also thoughtful with the bad weather and took precautions to leave it outside
We would have no hesitation to recommend
December 18, 2025
Reply from EPC
Hi Nickie, thank you for taking the time to leave such a thoughtful review. We’re really pleased to hear that Mark explained everything clearly and took extra care given the bad weather — that attention to detail is exactly what we expect from our team. We appreciate the recommendation and are glad you were happy with the service. If you ever need anything in the future, don’t hesitate to get in touch.
Above and beyond
Mark, didn’t just service the heat pump. He also checked the hot water system and the underfloor heating. Spotting issues with both, that he spent additional time fixing.
December 3, 2025
Reply from EPC
Hi Kieron, thanks very much for the great feedback. Mark takes real pride in going beyond a basic service, so it’s good to hear he picked up on the hot water and underfloor heating issues and got them sorted for you. That extra time on site is exactly about making sure the whole system is running as it should. We really appreciate you taking the time to share your experience.
Reply from EPC
Hi Andy, thanks for the great review. We’re glad to hear you consistently receive a friendly, reliable service — that’s exactly what we aim for on every visit. We really appreciate your continued support and look forward to helping again whenever you need us.
Polite friendly and thorough service
December 10, 2025
Reply from EPC
Hi Tom, thanks for taking the time to leave a review. We’re pleased to hear you found the service polite, friendly, and thorough — that’s the standard we expect from our engineers. We appreciate the feedback and are always here if you need anything going forward.
EPC Improvements - 5* at every level
I have nothing but praise for EPC. They installed my system 4 years ago and serviced it yearly ever since. The staff is friendly and available at any time. EPC is competent, trustworthy and reliable.
December 4, 2025
Unprompted review
Reply from EPC
Hi Claudia, thank you so much for such a generous review — it genuinely means a lot to us. Looking after your system from installation through to ongoing annual servicing is exactly how we believe things should be done, and it’s great to hear that consistency, reliability, and trust have come through over the years. We’re really grateful for your continued support and kind words about the team. If you ever need us, we’re always only a call away.
Terrible experience
Terrible experience. Arrogant company.
Found EPC through a facebook advert. Was very impressed at first and decided to go with them to fit a heat pump for our refurbishment project. I promptly paid the deposit and was sent proforma information from vaillant and a list of things that needed to be done prior to the install. We had a contact who was very responsive but never told me that we basically needed to complete everything, (which amounted to second fix for our plumber and electrician) give them photos proving this, and then wait 8-10 weeks before they can come to do the installation. This lead time is a crucial piece of information. Turns our contact left EPC while were mid preparation stage, but I was never told. I only found this out when my emails had gone unanswered and i called the company to find out why. I was then told about the crazy long lead time, which would have meant us moving into our house in winter with two small very small kids and no heating or hot water for several weeks. There was very little concern for this, no apology for the lack of communication and even at that point they wouldn’t even pencil in a date because they wanted everything completely finished for the installation first - which was completely unrealistic.
I told my plumber about this, who said it was crazy and recommended another company who could come and do the installation in time for us. The documents i had signed with EPC at the time of paying the deposit made it clear I could cancel and get the deposit back less some minor deductions. So i notified them of this, and then suddenly EPC became more responsive. But it was too late. All confidence had gone and I saw no reason to proceed when we had a clear better alternative that was not going to put my family at risk of having no heating or hot water.
However I am still waiting for the deposit to be returned after two months. They clearly have no intention of doing so. I am now having to prepare a small claims court application.
Also, having gone with another company I now look back on what EPC told me at the preparation stage and don’t think it wasn’t great. Wish I had been with the other company from the start.
Beware.
September 15, 2025
Unprompted review
Reply from EPC
Thank you for taking the time to set out your concerns. We are sorry that your experience did not meet your expectations and appreciate the opportunity to clarify the situation.
At the outset of the project, EPC provided an installation timeframe that was fully in line with our standard process and industry norms for heat pump installations of this type. This timeframe was contingent on all prerequisite works being completed and signed off, which was clearly outlined in the documentation provided at deposit stage. An installation date was available within the agreed timeframes once the project was ready to proceed.
We acknowledge that your original point of contact left the business during your preparation phase. While the project itself remained active and managed internally, we accept that this change should have been communicated more clearly and we apologise for the frustration this caused.
Regarding the deposit, EPC is not withholding it in full. As set out in the terms you signed, the deposit is refundable subject to deductions for costs already incurred. By the time cancellation was received, the project had progressed to an advanced pre-installation stage, including system design, specification, manufacturer coordination, administrative processing, and resource allocation. These costs are material, not minor, and are currently being itemised in line with the contract.
We also apologise that the refund process has taken longer than expected. This period coincided with our busiest operational window of the year, and we experienced unforeseen staff absences due to sickness. That said, we recognise this does not change your expectations, and the matter is now being actively progressed.
A director of EPC will be in direct contact with you to finalise the refund calculation and bring this to a conclusion. Our intention has always been to resolve this fairly and in accordance with the agreement, not to delay or avoid repayment.
While we regret that you chose not to proceed with EPC, we wish you well with your installation and trust the above clarifies our position.
professional, expert, helpful
We installed a Vaillant heat pump with EPC two years ago. Every aspect of the installation was dealt with with a professional and competent manner: the installation was top notch (not a single problem across two years); on the handful of occasions we needed help with the controls EPC staff were very helpful and sorted our problem quickly and efficiently. The heat pump has been working seamlessly.
There are two points worth special mention. First, in trying to decide whether to install a heat pump or not, EPC staff did not do a hard sell: they tried hard to offer us objective advice, to help us make the right decision for our household. It is worth pointing out that, as we are one of the first households in the area to install a heat pump, we had a lot of trouble getting approval from the local building authority (the regs have changed now, but basically at the time we needed planning permission because of the volume of the pump). EPC were fantastic helping us navigate a fairly complex and unpleasant exchange with planners. The second point is that we needed the heatpump positioned on top of our garage, on the side of the house (we live in a semi detached house). This was hardly trivial -- the machine is about 200 kg. The EPC installer was brilliant, using a winch to lift it over. It felt a bit like pulling a rabbit out of a hat, moving the machine where it needed to be.
We have been using EPC for the annual heat pump service. Also, we are looking to bring them back to install solar panels to our home. Definitely extremely happy with everything they did; we highly recommend them.
November 27, 2025
Unprompted review
Reply from EPC
Hi Emmanuel, thank you for such a detailed and thoughtful review — feedback like this really means a great deal to the whole team.
We’re especially pleased to hear that the system has performed flawlessly over the past two years and that our support around controls and servicing has been prompt and helpful. Your comments about the decision-making process are important to us — we’ve always believed that heat pumps aren’t a one-size-fits-all solution, so giving clear, honest advice without pressure is the right approach.
The planning process at the time was far from straightforward, and we’re glad we could take some of that burden off your shoulders and help steer things through. As for the garage install — you’re absolutely right, that was no small task, and it’s great to hear the ingenuity and care of the installation stood out.
We really appreciate your continued trust in us for servicing, and we’d be delighted to help with your solar installation when the time comes. Thank you again for the recommendation — it means a lot to us.
Good service and an efficient heating system
EPC designed and installed the system we have which is somewhat different to standard UK installs. EPC continue to provide an annual service which is comprehensive and thorough. Both James and Mark are always ready to answer any questions.
November 23, 2025
Reply from EPC
Hi Elizabeth, thank you for taking the time to leave such a kind review. It’s great to hear that the system design and installation have continued to perform well, especially given it’s a more bespoke setup. We take a lot of care with non-standard systems, so it’s good to know that shows through in both performance and servicing. James and Mark will really appreciate the mention. As always, we’re here if you have any questions or need support in the future.
Professional and Friendly
This was the second service on our heat pump installed by EPC.
Friendly and reliable as ever, work was completed on time and as expected. Mark and the EPC team are very professional and knowledgeable and we thoroughly recommend their services.
November 21, 2025
Reply from EPC
Hi Alastair, thank you for the great review. We’re really pleased to hear that your second service went just as smoothly and that the team delivered exactly what you expected. Mark and the rest of the EPC team take a lot of pride in being reliable, professional, and knowledgeable, so your recommendation means a lot to us. We appreciate your continued trust and look forward to supporting you in the years ahead.
Annual service of heat pump system…
Annual service of heat pump system carried out by EPC. As before this was conducted in a professional manner by Mark who kept me fully informed at all times. Definitely recommend.
November 19, 2025
Reply from EPC
Hi Mike, thanks very much for the review. We’re pleased to hear that your annual service was carried out professionally and that Mark kept you fully informed throughout — clear communication is a big part of what we aim for. We really appreciate the recommendation and your continued trust in EPC.
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