E.ON UK Reviews 

Please do not get a heat pump installed by EON. They have left my 70 year old mother with health issues including COPD and high blood pressure, with a heat pump that turns off in cold weather. This leaves her with a cold house if the heating system goes off in the night or when she is out. The costs are also really expensive because of this and my mum is a pensioner and vulnerable.

The designs are also poor and will take up far more space than what is needed.

EON are refusing to attend and investigate further and continue to ignore emails to reattend. They have also blamed the installers and told me to sort it out myself.

We have paid between myself and the government £13,500 for a heating system that does not work in cold weather.

If you are thinking of a heat pump Octopus is a far better company to buy from and the heat pumps are fantastic.

This is my first home as an adult and since calling Eon (with it being the existing provider) I have had nothing but great help. The lady I spoke to on the phone to register and give my meter readings was super helpful since I didn’t have a clue what I was doing and even booked in for a smart meter to be installed without me needing to ask! Then I had an engineer out to fit a smart meter today, named Richard. He was kind, friendly, up for a chat and explained he could fit the meter despite it being booked on incorrectly. Sometimes this causes a disruption when something is incorrect but the matter was resolved in minutes. Richard was very polite and efficient. My tariff wasn’t on my meter due to the booking issue, but Richard gave me clear instructions to call up and have this resolved. So far, I have had nothing but a great experience with Eon.

I have sold the property they were supplying to. They now keep saying they won't close my account until I provide personal email and phone number for the purchaser of the property. On the day we sold, I provided the contact name and official contact address for the purchaser. Under consumer law, this is what I am required to do. So E.ON has the contact details of the purchaser and should close the account without any excuses.

I am not further required to pass on personal contact email and phone number of the purchaser. Even if I had these, under basic data protection I couldn't pass them on without permission. However, E.ON does not seem to understand consumer law or data protection and keep insisting on this information and saying they will not close the account without the personal email and phone number. Why is name and address not sufficient?

For the first month of this fiasco, I did try to help and did contact the estate agent to see if he was in a position to pass on this personal information. Now, as it's been a full month, I am tired of being endlessly told by E.ON that they will not close the account.

Dreadfully unprofessional "service" and quite shocking for an electricity supplier.

Ian came to the house first thing and was fantastic. Really good quality work and explained everything so that I understood.

Worst company ever. Gave me a quote derived from my smart meter readings. Was with them for almost a year when they said they needed to up my monthly bills. My new payment leapt from £116 a month to £340!!
How ridiculous is that. I couldn’t keep up with the payments so had to move to another supplier. Wow. They are treating me so badly now. Threatened to come to my home to sort out setting up a repayment plan. I’ve already set up a plan via standing order but they are still harassing me. Keep emailing and texting despite my repayment plan. I’ve explained everything via WhatsApp and they agree to my plan but then totally disregard our multiple conversations and threaten me with this that and the other. Also they keep on adding £15 onto my bill for not clearing it. They are horrible.

Eon are trying to bully us into having smart meters installed syaing our meters won't be able to work much longer. What a load of tripe. Told them there is NO legal obligation to have our working meters replaced. So now trying to BLACKMAIL us saying they will put our agreed tariff up to a higher tariff if we don't have them. We signed up to moving to Sainsburys Energy which we didn't know was actually EON conning the customers. No mention of being forced to have Smart Meters when we moved from Octopus to save £100 a year. They are lying. What a horrible company. Just been reading all the bad reviews SHOCKING.

I first raised this issue in December 2025, but it was not properly addressed and I was repeatedly fobbed off. I had to chase multiple times just to receive a response to my request.
The main issue relates to my tariff. I was on separate tariffs for gas and electricity. After finding a cheaper deal, I specifically requested that only my electricity tariff be changed. However, the agent went ahead and changed both gas and electricity tariffs without my consent.
I raised this again and clearly reiterated that I only wanted the electricity tariff changed. Despite this, I was later told by a team leader that this could not be done due to terms and conditions—yet these were never provided to me. It feels as though the rules are being made up as they go along. What is most frustrating is that this exact request had already been actioned previously, so it is unclear why it is now being refused.
Instead of resolving the issue, the team attempted to justify the situation by offering compensation for poor service, which does not address the root problem. This has been an ongoing issue for months, and the level of service has been extremely disappointing.
I have had to gather and provide evidence myself, including screenshots from WhatsApp conversations, to disprove incorrect information given by your team. I also requested escalation to a manager, but instead I was contacted by a supervisor who lacked the necessary skills to properly investigate or resolve the complaint.
Additionally, I asked for my direct debit to remain variable, but it was incorrectly changed to a fixed amount, again showing a lack of understanding of my requests.
At this stage, I have clearly outlined what needs to be corrected, yet the issue remains unresolved. This has been ongoing for far too long. I would now like this escalated to a senior manager or CEO-level contact to ensure it is properly resolved, and to highlight the need for better training within your complaints team.
This is, without doubt, the worst customer service I have experienced. Rating o

We had Jason Grey install our new meter and he was excellent

Jason Grey the tech was polite and efficient

Seem to be totally incapable of producing an accurate final bill following a bereavement.
Still receiving post addressed to the deceased 3 months after death, despite informing them over 2 months ago.

Now going into a 5th week and no signs of my mother's £4000 refund technically stolen by EON on 23rd Feb 2026.
Was told on Wed 25th that cheque was on its way another delaying tactic as we are still waiting
But the piece de resistance to which I'm actually fuming about is they have issued mother who is 88yr old with another monthly bill of £178.86 and unbelievably took the money from her£4000 as a credit no permission given and none sought they now say she is £3828.26p in credit
Using this money was not an option but EON believe they have the God given right to take this money and use it at will.
I have escalated this complaint but it appears to have done very little to solve this problem and as mentioned in my previous review to name who I have dealt with so here goes Alnia Annia Prithom Aishish I would just like to thank you for safeguarding and upholding EONs policy of the Customer is never Right
Now losing the will and the prospect of getting this money back any time soon and my mother's words last week summed it up "Son this is wearing me down" £4000 is a lot to lose at my age.
EON hope you are suitably ashamed and embarrassed in your handling of a simple cheque refund

Just switched from octopus was paying £50 a month for electricity only , switch to eon who’s tariffs and rates where cheaper . After first month of dd being £47 they now want to put it up to £90 which is not what I use a month . Terrible I will not be doing this, do not switch to
Eon they are dishonest. I will be reporting

Had new smart meter fitted by Connor J. Phoned ahead with eta and was very punctual. He was very polite and efficient, explained everything to me before leaving. Very impressed.

Brilliant. Very nice engineer called Ian. I10881

What a shower was given one of these smart meter s but when I was given some free power it was put on my electricity I have dual fuel and normally get a choice big brother in action

I am the landlord of a brand new residential property. E.ON Next had the supply on an expensive deemed/business tariff for the vacant period .
It took them over a month and multiple chases before they finally sent the invoice. I paid the full balance on 6 March 2026.
21 days later I still have no confirmation that the payment was received.
I also asked several times to change the account from business to residential so my tenant could switch suppliers. Dalet replied on 6 March saying it had been updated, but 20+ days later the address is still listed as business in the national database. My tenant is still unable to switch.
The communication has been extremely poor throughout. Very disappointed with E.ON Nex

Ian came to fit a smart meter and he worked had in a cramped space to do this

I called them to move homes with them as I’ve been with them for 3 and a half years.
One of their representatives confirmed the move had happened and confirmed my new tariff and estimated monthly price based on my current usage.

A week later I found out (through calling them) that he in fact did not do the move or the closure of my account on my old house, so I had to do the closing over again. Despite having it in writing in their system (as they’ve shown me) and admitting that I’ve been “misinformed” by their colleague, they have not resolved the problem. Clearly, they don’t want to honor what their colleague quoted me as a week has passed and they’ve increased their prices due to what’s happening in the Middle East. They’re quoting me DOUBLE than last week and saying they’re very sorry for their mistake, but there is nothing they can do.

I refuse to stand by that and will be taking this further with the ombudsman as I’ve been out of a contract for 2 weeks and counting, and they’ve repeatedly admitted to their fault.

What a rip off , not too sure how they can charge me 23p per kw for the electric use but the electric i generate from my solar they pay me 6p per kw

I rarely leave reviews, but this experience has been extremely frustrating and needs to be shared.

After over 3 years of no contact whatsoever, I was suddenly contacted and told I owed over £400–£500 in gas charges for a property that has been completely derelict, with no gas usage at all during that time.

Despite explaining this clearly and the fact that ofgems back billing protection protect customers from this, I was repeatedly told that the charges were correct and that I was fully responsible. I received multiple emails and communications insisting I needed to pay, including references to debt collection, which was extremely concerning given the circumstances.

I also raised Ofgem backbilling regulations early on, as the charges clearly fell outside of what should reasonably be billed. However, I was told that I was incorrect and that the charges still applied. It then took approximately 5 months of ongoing back-and-forth before this was finally acknowledged and the account was reassessed in line with those same regulations.

Throughout the process, the company maintained that they had made several attempts to contact me, including letters and site visits. However, when I asked for evidence of these attempts, none was provided.

It was only after persistent escalation that the bill was significantly reduced, and it was also acknowledged that a technician had attended but failed to take a meter reading — something that could have resolved the issue much earlier.

What is most concerning is that I was consistently told I was in the wrong and pressured to pay charges that were ultimately found to be incorrect. Had I not challenged this, I could have ended up paying hundreds of pounds unnecessarily.

While I appreciate that the bill was eventually corrected, the handling of this situation was poor from start to finish and caused unnecessary stress.

I would strongly advise anyone dealing with this company to carefully check their bills and question anything that doesn’t seem right. In fact my whole situation I would recommend people to avoid this company at all costs. They threatened me with debt collection constantly for bills I didn’t even need to pay and went against the ofgem back billing regulations.

This was completely illegal and I wonder how may people they are doing this too, stand up against these corporations people they don’t care about you.