E.ON UK Reviews 

Smart meters need to be fixed/replaced as they were no longer sending readings. Kieran, the engineer, was extremely knowledgeable and efficient and sorted everything out.

Great service today from a very friendly engineer. He came to change my meters from 3G to 4G. Very knowledgeable and kept me informed. Cleaned up after himself and read through the leaflets with me and the new smart meter before leaving.

My HIU system is broken and therefore my bill has over doubled by by price and they don't want to come fix on a Saturday because it's not an emergency and during the week they cannot give a 2hr window which is very inconvenient for people who don't work from home

The worst customer service ever.
So, meter not working, who owns the meter eon does, display not working for 4 month, been reported 6 times told me its not there issue but northern grids,
Eon’s meter so why wont they just swap it,
Been getting estimate bills unable to get actual bills.
😡

I’m having the worst experience as customer I have ever had. They sent me a bill which was too high and I have been contesting it for over two months. In this time, I have spoken to countless of customer service agents over phone and email, however, every single one of them has said the same thing: “I’ll get back to you”. In the two months this has been going on, I have submitted multiple readings and conducted multiple tests but they has still ignored my emails and I can no longer get through to anyone on the phone. They have sent emails to say about late fees and debt collection agencies despite this being contested. Overall, I would not recommend and as soon as this ordeal has concluded I will be moving to Octopus Energy!

This is now my third complaint about E.ON, and the second time their accounts team has made a serious mistake.

I switched suppliers in December 2024. In January, E.ON took a direct debit in error, which they later refunded. After that, I heard nothing further and was under the impression my account was fully settled and closed.

Fast forward to now (April 2026), and out of nowhere I receive a letter demanding £155.44 by 30th April, claiming I have an outstanding balance of £630, with threats of it being passed to debt collection.

Naturally, I called immediately in a panic. The first advisor I spoke to was extremely rude and simply told me I had to pay, saying if there was an issue they would “refund it later.” When I asked to raise a complaint, the call conveniently disconnected.

I then had to call back on a chargeable number, where a second advisor explained that their team had already been looking into the account, but it is now being reviewed again due to the time that has passed. I’ve been told this could take up to 21 days, and thankfully my account is now on hold during this time.

However, how is it acceptable for a company to suddenly demand over £600 from a closed account nearly two years later, especially when they previously confirmed the balance was settled and even issued a refund?

This has caused unnecessary stress and worry, and judging by other reviews, I am clearly not the only person this has happened to.

Extremely disappointing experience.

Had issues with meters and Andy came out from EON and sorted it all out, and updated them and changed one of the meters. Lovely chap very pleasant, knew his stuff and answered any questions I had. Cannot fault the service he provided.

This company is charging me even my account was closed on March 12, 2024. They even pass it yo collection company. Last payment made 25th of March 2024. We left the house 12th of March as I sold my house and move to New Zealand. How reckless this company…My name is Jerrymie Angon mobile number is 07769697670. I want them to be in contact with me and call this collection team to stop sending letters on my Aunt address.

I initially gave a 1 star review, I have now revised this to 5 stars. My issue has been resolved with some help from Shane at Eon
Thank you

For some reason, my bill that covered February to March was split in two. I didn't notice at first that my first bill only contained my electricity usage during that time. So I shifted my money into my bill paying account, and then sorted my budget for the month.

Then, a couple of weeks later I get a second bill. I was confused by this and reviewed my bills, and that's when I noticed my electricity and gas usage for February-March had been split into two seperate bills. Because of this, I hadn't budgeted for the unexpected bill that they want paying in the same month of the previous bill.

I reach out to e.on customer service to find out why they messed up my bills like this, but they kept telling me this was because of the price rise on 1st April, which had nothing to do with my two bills or what I was asking them about.

Furthermore, I'm on a fixed tarrif until May, so any price change doesn't affect my bills anyway.

I tried several times to explain this and get them to answer my actual question, but they just kept parroting the same incorrect information

I asked to make a formal complaint and requested a complaints reference number, but they have ignored this request even though I've made it several times.

This isn't even the first time they've missed up my bills, but they're being just as unhelpful about it.

What an awful energy company to deal with. I've had numerous bad experiences with them ranging from miss information on gas and electric on their app to more recently signing up for solar and battery installation, which is the worst decision i could have made. They miss-sold me on a couple of aspects, took my deposit and decided that was the time to say there is going to be a delay in installation. I'm now trying to cancel, but can't get through to anyone on email or phone. Their customer service head needs removing from the business as clearly the guidance given to staff is to bring in money and ignore anything else. To add to all this frustration their app is terrible to use and will regularly log you out and ask you to sign in when you've already enable biometrics, and randomly add other plans to your account and up until recently you'd have to wait months to see your energy usage even on a smart meter.

Completely incompetent, called us to say our gas meter had a low battery and basically used scare mongering by saying we would be left with no gas to pressure my wife into accepting an appointment to have the meter changed. This was a day taken as unpaid leave and waited in allday to then be called at 4pm to say no one was coming. They then called to say there were no appointments yet and we had to call back in a few weeks. Within days they called asking to make an appointment which we did for within the Easter holidays so as to avoid more unpaid leave. This appointment was to be a month after the original no show, and yet again waited in allday to be called at 4pm to say the engineer wasn't coming. On both occasions my wife was being told at approx 15:30 that the guy was still going to attend. The people that call you do not care one bit that you have been let down and are only interested in getting you off the phone. Absolutely shocking levels of customer service and would advise anyone to avoid this disgrace of a company.

The engineers are great, but E.ON’s internal systems are a total failure. Since March 25th, I’ve been waiting for an "approval" for a faulty HIU replacement with zero updates.

I am stuck in a loop of robotic customer service. I spoke to Ellie today, who offered nothing but excuses, claiming they are still waiting for a response from "engineers" in the back office for my complaint handler, Sara.

I am paying high monthly fees for a service commitment that clearly doesn't exist. E.ON simply does not care about their customers once they have your money. Avoid them if you can.

This company does not care about the service they supposedly supply.
Useless in everyway.
Trust pilot should change there star rating so you can leave 0 star.

Vile company. We decided to use Eon as they are well know. I cannot begin to explain how many issues we have had since joining them. We had a brand new meter fitted but apparently they never switched the other of, meaning we were being charged on 2 meters. Once this was supposedly sorted, our bills were all over the place and Eon charged us £300 saying the meter readings were incorrect after we were told this would be dealt with internally. 6 months down the line we are still being messed around and advisors do not care, they just want you to acknowledge how hard they have worked by responding to you with no further support. Stay away from EON

I’ve had a complaint with E-on since 14 November 25 & so far nobody has bothered to deal with it. Since then I’ve had further problems-being told incorrect information regarding tariffs & was also told I did not qualify for the April reduction as I was on a fixed tariff which again is incorrect. They are the worst company I have ever dealt with.
Someone called Daniel M seems to have the job of addressing bad Trustpilot reviews but last time all he did was send me a single sentence email & never dealt with the outstanding complaint. I have yet to deal with anybody there who understands tariffs or who can write a proper response. Absolutely disgraceful. Daniel M-what is happening to my 14 November complaint, compensation, & additional compensation for failing to pay the original compensation in a timely manner???

Friendly and polite engineer. Explained everything clearly. Excellent job!

The Worst Energy supplier ever They gave me a Default Through no fault of my own and cost me my home it cost me getting my morgage shame on you Don’t Trust what they tell you either

I had a guy called come out to my house last evening as an out of hours call out.Although he had obviously had a long day,he was kind helpful and went the extra mile.i think he was a subcontractor to eon but absolutely brilliant.he needs a pay rise!
Thanks lee

They have left my 70 year old mother in law with a heat pump that turns itself off in the cold weather. We've explained to them that she has health issues yet they don't seem to care.
They have blamed the installers (that they arranged) and have told us we need sort it. They refuse to come investigate and they ignore emails.