Skip to main content

O'Neil Gas Services Limited Reviews

Solar panel installer serving Argyll and Bute, the UK

Overall Rating

4.4

312 reviews across platforms

4.5

290 reviews

Trustpilot

2.6

22 reviews

Newest Reviews (40)

5/5
Trustpilot

Recently moved into a new house

Recently moved into a new house. I chose O’Neils from two personal recommendations. They came out for a radiator leak which they were unable to fix due to the age of the radiator. The Engineer made sure the radiator was drained and off to allow me to still use my heating. The quote to supply and fit was reasonable. I also got them to put in a new boiler. The engineer who attended for the leak also provided the quote. He was really clear and discussed the boiler options with me which I found really good as sometimes being a female I have been talked down to at times. The installing Engineer (Glen) did both the radiator and boiler. He was efficient, tidy and helpful. He made sure any questions I had were answered in full before he left but made it clear I could phone if I had any questions he also set up my Hive thermostat system ensuring it was working properly and that I was connected via the app. The old boiler was taken away before he left the house and the place was left near and tidy. The office staff (Tammie) was really helpful and I received a follow up call after the work had been done to make sure all was ok. I have been in the office and all the ladies are really nice and friendly and helpful. The engineer attended really quickly for the leak and the new boiler/radiator fitting was booked on the Monday for the Thursday of the same week. (Unlike the previous time I had a boiler fitted which took six weeks to be done!)

Mairhi Mowbray26 Feb 2026
5/5

Boiler was fitted efficiently and well, and looks neat and powers the warm water and heating well. Gas engineer was friendly and the check up phone call a week later was appreciated. Thank you.

Nicole17 Jan 2026
5/5

This morning we had the pleasure of having our boiler serviced by O'Neil Gas and Heating, they sent an engineer who arrived on time and introduced himself as Alistair. All I can say is it was a pleasure to have him here completing a service and installing a Hive Thermostat. Alistair is a great representative of your business cannot praise him enough.

Steve Search16 Jan 2026
5/5

This is to say “thank you, John” for being so friendly and helpful and patient and professional when helping us to get to know our new boiler and its hive and ensuring that our central heating system works efficiently. A really good experience!

Kupfer14 Jan 2026
5/5
Trustpilot

First Class from start to finish

We have been a customer for years and between Christmas and New Year our gas boiler gave up on us, thankfully the whole episode was made so easy by the staff of O’Neil’s and a new boiler was ordered and fitted as soon as it was possible. Tammie in the office was so understanding and helpful and Glen the engineer had the work all done and cleaned up in the same day. A credit to the company and with the brilliant attitude and professionalism we were shown. I thank everyone concerned and would recommend the company, although I hope it will be a while until I need to call again. Many thanks once again.

Gary McLaughlin11 Jan 2026
5/5

We recently had our gas boiler replaced by O’Neil Gas and Plumbing Services (Ayr), we received a great service and assistance delivering and installing our new boiler. Their installation Engineer Matthew was first class, he was very helpful and knowledgable completing the removal and installation in one day. regards R.Kerr (Ayr)

Rodger Kerr11 Dec 2025
5/5

We are an elderly couple . Our boiler needed parts and was dealt with efficiently and quickly so that we were not without heating and hot water any longer than need be while they got the parts . Staff on the phone are polite and very helpful . Been with this company for a few years now and would recommend them.

janice osborne24 Oct 2025
5/5

PROBLEM WITH CENTRAL HEATING SYSTEM, CONTACTED SERVICING COMPANY WHO INFORMED ME AN ENGINEER WOULD BE WITH MW A.S.A.P. ENGINEER ARRIVED, GAVE HIM DETAILS OF FAULT AND WITHIN FIVE MINUTES HE RECOGNISED THE PROBLEM...FIXED IT AND LEFT ME VERY HAPPY CUSTOMER. EXCELLENT WORK.

IAN STRACHAN22 Sep 2025
5/5
Trustpilot

Excellent service boiler fitted…

Excellent service boiler fitted standard of work exceptional. Fitter respectful and very efficient

Helen21 Aug 2025
5/5

Required a new boiler and new valves fitted. Work was carried out in 2 days, old boiler took away and every room tidied up. The new boiler controls were explained to us and the engineer told us if we had any problems with them, to give him a phone call. Excellent service from everyone, from office staff to engineers.

Brenda Robertson7 Aug 2025
5/5

Very professional from first contact through "quote" visit to final installation and demonstration of operating the new system. Although carpets had to be lifted and floor boards opened there was little trace of the work which had been done once the system was installed and operating. Would recommend.

George Millard30 Jul 2025
5/5

I was very impressed by Glen the Gas engineer who installed my new boiler! Nothing was a problem for the engineer to get my new boiler installed! Glen was excellent and very experienced at his work and kept us updated whilst installing the new boiler also tidied any mess! I would highly recommend O'Neil Gas &Plumbing and would be grateful if you could let managed know he is a credit to your company with kind regards Mrs J Wilson

Stewart Wilson11 Jul 2025
5/5

10/10 can't recommend these guys enough! My boiler died over night and when I called they had an engineer out to have a look within 2 hours. The engineer Davie couldn't have been more down to earth and told me straight what was wrong with the boiler and recommended a replacement. Phoned for a quote and hour or so later, my quote was very reasonable and they even managed to get it done the next day and the other engineer who I didn't get the name of unfortunately was also great and helped me get everything back the way it was after the boiler was installed and tested. Will definitely be using these guys again and I encourage people to do the same. Many thanks

Connor Graham20 Jun 2025
5/5

I have been a customer of O'Neil Gas for almost ten years. Never had an issue with them and they took care of my 30 year old boiler up until the day it stopped working and wasn't financially viable to be repaired. We had several different engineers out over a period of two weeks and various parts were replaced but made no difference - our boiler was done. It did mean two weeks of no heating and hot water whilst different things were tried and I did unfortunately end up with water damage in my living room from a leak in my hot water tank when a pump was replaced. However, after a call with the head of the company to discuss a replacement boiler and a significant reduction in price due to the inconvenience which was acknowledged, two days later I had a combi boiler fitted, my hot water tank removed and a new hive system installed by two lovely engineers. I would not hesitate to recommend O'Neil Gas for boiler care. There were some issues throughout the process but it's how the company deals with them that matters most and the reason why I will remain a loyal customer of O'Neils for years to come.

Kelley Rafferty7 Jun 2025
1/5
Trustpilot

Left for months with no heating or hot…

Left for months with no heating or hot water. Initial repair booked, took over a week for the needed part to arrive and then the repair failed, had to chase for the promised refund. Agreed to a complete replacement, took a further 2 weeks for someone to come out and survey for the quote. Then I chased the quote over 4 weeks, kept getting pawned off about someone waiting to hear back from a manager. I stopped chasing eventually and just never heard back from them again. Complete waste of time and money.

Gary Kane29 Apr 2025
1/5
Trustpilot

Three weeks of no heat or hot water, and no refund after failing to fix boiler

When our Worcester boiler failed we contacted O’Neil’s. Someone came out quickly and diagnosed a failed gas valve. That was on a Wednesday. I chased up on Friday to find out what the score was, and it was arranged for fitting on the following Tuesday. I took time off work, only for the fitter to arrive with the wrong valve. Then a subsequent visit and another wrong valve. The fourth guy came out with the correct valve, but found that the wiring harness was failed. The fifth guy came out with the wrong harness. By this point I’d arranged with a different Gas Fitter to supply and fit a new boiler. O’Neil left us with no heating or hot water for three weeks during the cold snap in November’24. They have you pay in advance, but then when they fail to fix the job refuse to refund you claiming that you’ve paid to replace a valve, and that’s what they’ve done. Avoid at all costs!

Anthony King2 Apr 2025
1/5

When our Worcester boiler failed we contacted O’Neil’s. Someone came out quickly and diagnosed a failed gas valve. That was on a Wednesday. I chased up on Friday to find out what the score was, and it was arranged for fitting on the following Tuesday. I took time off work, only for the fitter to arrive with the wrong valve. Then a subsequent visit and another wrong valve. The fourth guy came out with the correct valve, but found that the wiring harness was failed. The fifth guy came out with the wrong harness. By this point I’d arranged with a different Gas Fitter to supply and fit a new boiler. O’Neil left us with no heating or hot water for three weeks during the cold snap in November’24. They have you pay in advance, but then when they fail to fix the job refuse to refund you claiming that you’ve paid to replace a valve, and that’s what they’ve done. Avoid at all costs!

Anthony King1 Apr 2025
5/5
Trustpilot

During the annual service check some…

During the annual service check some issues were flagged up. After the visit the boiler took offence and stopped pumping water to the radiotors. O'Neil sent 3 engineers (we had multiple visits) were quick to respond and ordered parts to fix the issue. Service was professional, friendly and I was kept op to date by friendly phone calls advising me of progress. 2 weeks later the boiler has been purring and running like never before.

topreviews3 Feb 2025
5/5

Our heating system developed a severe blockage over the summer. It was only discovered when I switched it back on when it got cooler. No heat to any of the downstairs radiators. Two engineers spent four hours locating and removing the blockage. The two guys worked tirelessly. Some new pipework and an extra filter were added. On completion, they explained exactly what they had done and gave us good advice on how to use the thermostatic radiator valves to give maximum efficiency. The system is now working better than I can remember. Radiators heat up almost immediately. I cannot praise the engineers highly enough for their professionalism. Highly recommend. Tom, Troon

Tom Malkin27 Oct 2024
5/5

We have used O’Neils for a number of years now for our boiler care, always been fantastic! We recently had our Annual service again, arrived exactly when they said and serviced the boiler promptly. Very pleased, thank you.

Jac P23 Sep 2024
5/5

Phoned to book our annual gas boiler service on the Thursday service arranged for the following day. Gas Engineer turned up when you said they would, he was well presented and mannerly, carried out his work professionaly and left leaving no mess whatsoever. Then a few days later I received a call from their staff to check everything went okay. Would highly recommend this company.

Michael McMillan19 Sep 2024
5/5
Trustpilot

Great company and engineers

Great company and engineers, my oil boiler had issues and they fixed it in no time at all through an insurance claim. I can't rate them high enough. Customer service is fantastic too.

Craig Redmond30 Aug 2024
5/5

Had my yearly service last week from O’Neill’s and couldn’t be happier. The engineer came within the specified time, completed his work promptly and efficiently. I was able to carry on what I was doing without even knowing he was there. Everyone from the staff on the other side of the phone through to the engineers are friendly and experienced. Highly recommended!!

BozzaRedtop22 Aug 2024
5/5
Trustpilot

I called about a new boiler and the…

I called about a new boiler and the girl on the phone was so helpful as a 1st time buyer wasn't sure and what was best this girl helped me with everything brilliant customer service will be using this company I'm future

gemma houston20 Aug 2024
5/5
Trustpilot

Friendly & informative

Was recommended this company by a friend. Was looking for a quote for a boiler service, from the start i was given great customer service. Spoke to a lovely lady called Tammy. Answered all my questions. She couldn’t of been any more helpful. Would defo recommend to friends & family.

Laura15 Jul 2024
5/5
Trustpilot

Excellent service provided by this…

Excellent service provided by this company who serviced my boiler engineer was polite and completed service in a timely manner

Mrs watson12 Jul 2024
5/5

Our oil boiler was due a service so we reached out to O'Neils. They were able to find a time to suit quickly and, on the day, the engineer was a little earlier but had told them we would be home. The service was straightforward and we were told about things to check and signs to look out for. This was helpful as we are fairly new to the property and the previous company didn't mention any of this so we thought this showed excellent customer service. We will invite them back next year and know that should we have any issues they will be able to help us.

Wendy Harris7 May 2024
5/5

My recent experience was met with Excellent, Efficient and Friendly Customer Service Staff in regard to an urgent home repair. The Engineer carried out a thorough investigation and completed a challenging repair given the confined space and location. Under the circumstances all those involved exceeded my expectations.

Paul Marshall6 May 2024
1/5
Trustpilot

AVOID THIS COMPANY AT ALL COSTS

I have O'Neil's Gold Care contract covering my boiler and heating systems. I renewed this yearly contract last August 2023 at a cost of £195. My boiler had been hassle-free in the past but in February 2024 it lost pressure, no heating or hot water, so I contacted O'Neil. After many weeks of ongoing hassle, stress and numerous call-outs, O'Neil insisted that there was nothing wrong with my boiler and that the loss of pressure was caused by a water leak somewhere in the connecting pipework and that this was not their problem. I was now having to think about the cost and major disruption involved in finding the water leak. I was also thinking that it might be easier just to replace my entire heating system. So, I contacted a local company, R. G. Whyte, for advice. They came out and quickly found a faulty part in the boiler. I asked Mr. Whyte to install a new boiler, which he did in early March, and this solved the problem. There was nothing wrong with the existing pipework!!! I have reported O'Neil Gas Services to the Trading Standards. AVOID THIS COMPANY AT ALL COSTS.

A. Gormley19 Mar 2024
5/5
Trustpilot

Customer service O’Neil’s go above and beyond

I really wanted to make a review for the wonderful care and customer service my 80 year old mother in law received. Where do I start from the initial phone call for advice about her old boiler to arranging to have a new boiler fitted which they found for £200 than the agreed price. To the efficiency of fitting the boiler flushing boiler and the ease of arranging all visits. My mother in law is so happy with O’Neil’s and would recommend them to everyone in a heart beat. Thank you O’Neil’s from Mrs Murphy Ayr

customer3 Mar 2024
5/5

Have used O'Neil G&P for years and always have had excellent service. The office staff are always very pleasant and helpful and the engineers are friendly and professional. Had an issue with boiler this week and the engineer came out within two hours of call and issue resolved. He was very helpful with advice. O'Neil are an established company with a lot of experience and offer great customer service.

Jeanne Stirling21 Feb 2024
1/5
Trustpilot

They take your £800 for 4 years of…

They take your £800 for 4 years of boiler insurance with no claims and when you put in for a repair they lie. They stated it needed a new heat exchanger. It failed after 1 hour. They then said new water pump and brought out the wrong pump. They then stated they could not source the pump as obsolete They gave me the part number and I checked the boiler plate and Wolsey in Ayr had them in stock. They now state boiler is uneconomical to repair. No gas or heating for 6 weeks, and they continued to take monthly payments while waiting for parts. Then they decide to cancel your repair with no notice and lie about parts. Oh, they did offer to sell me a new boiler and fit it for free so nice of them. Well trading standards are on the case of it will end up in small claims court. Either way, I will win but to be safe Please Do Not Use this company.

John Boyd28 Jan 2024
5/5

I cannot speak too highly of the excellent service I have received from the whole O'Neil team, from the friendly and efficient staff on the phone to the competent and knowledgeable engineers who have called. At a time of year where there is greatly increased demand, their system is obviously geared to cope well. As someone who has experienced the frustrations of being kept on hold I was particularly impressed that there was an option to get a call back which actually worked. This is a firm I am happy to recommend.

Sandra Mccallum12 Dec 2023
1/5
Trustpilot

No regard for saftey

I had a maintenance contract for unlimited call outs spare parts and labour. My boiler had a fault late November 2022. engineers called numerous times,and numerous expensive parts were fitted. In my opinion they were guessing what the fault was. By January 2023 the fault was still their and the boiler was exploding inside the heat exchanger which in my opinion was very serious. they would not respond to either my calls or e-mails, by the beginning of February they would still not send an engineer to check what was causing the explosions, leaving me with a dangerous boiler and breaking my contract with them. I have now had the boiler repaired and although the boiler was in a dangerous condition, the repair was a simple one that should have been picked up by O'Neil's engineers at the very beginning. From November to February we had little or no heating. For your own safety. I would think very carefully before using this company

David Spelman10 Feb 2023
1/5
Trustpilot

Oil boiler repair disaster

I arranged for O'Neils to repair my oil boiler recently. The boiler was cuttting out intermittently and had to be restarted up to seven or eight times a day. An engineer attended and worked on the boiler for a while then declared the problem solved. It worked for a while then started cutting out again. I advised O'Neils of the problem and they said they would return ASAP. A week later the problem seemed to have sorted itself out. A day or two later an engineer arrived and I informed him that the problem seemed to have disappeared. He said he would have a quick look at it and said it seemed fine. Two months later am invoice arrived from O'Neil for £72.00 for the repair of my boiler which was not in need of repair. I then contacted my local Trading Standards officers who advised me not to settle the account under any circumstances. DO NOT TOUCH THESE COWBOYS WITH A BARGE POLE. (apologies for mixing my metaphors)

Paul Ciegotura19 Nov 2021
1/5
Trustpilot

Shocking customer service

A loyal customer for 10 years paying full boiler and central heating cover and this year was the first time I requested assistance with central heating. Mentioned that one radiator was slightly lukewarm resulting in young engineer causing 4 leaks which were rectified following morning by mature engineer. Shortly afterwards received letter stating that my contract had been terminated due to sludge in system. Quotation in excess of £1400, payment to be made upfront, was received for power flush, new radiator and valves. When I questioned the upfront payment I was told by the finance director that this was unusual as I was a regular customer but later informed this was a management decision. Reluctantly but necessarily made payment and work commenced a month later on 2 separate dates. Was surprised to receive telephone call several days after completion of work to say I owed more for chemicals used. I declined to pay the latter as this was not mentioned previously. Several weeks later I requested a receipt which was not forthcoming. A receipt was delivered ….for works done and payment. On application to renew my contract, it was declined stating that there was a high risk of claims. This decision and statement shocked me and I made 2 visits to the showroom to speak to Mr. O’Neil for an explanation, only to be told that he does not speak to customers either in person or on the telephone. My previous boiler was a Vaillant also, 22 years old, regularly serviced by a competitor and in good working order when O’Neil Gas Services replaced it for another Vaillant. Very disappointing customer service.

Satisfied customer18 Sep 2021
1/5
Trustpilot

please avoid these cowboys

please avoid these cowboys. They will take your money with no problem then ditch you when you ask for a quote for further work

andy dunlop25 Jun 2021
1/5
Trustpilot

I recently had my boiler serviced

I recently had my boiler serviced. The timer wasn’t working so the engineer offered to get me a price to replace it. Luckily he showed me how easy it was to replace it. About a week later they phoned to say that to replace and fit the part would cost £167 I said this sounded expensive and was told I could take it or leave it. I checked online and the part cost £60 I ordered it and it was delivered a few days later. I fitted it in seconds and it’s working again. I won’t use O’Neil again I didn’t like their service or attitude. I would advise you to read your reviews.

Joe queen24 Jun 2021
1/5
Trustpilot

BEFORE SIGINING UP TO A SERVICE AGREEMENT CONSIDER THIS

The company kept cancelling appointments and as a result it was 21 months between annual services. When the service engineer eventually came, he said that gas fire was unsafe and dangerous and that he would have to condemn it. We wrote to the director Brian O’Neil complaining about the poor service and unknowingly being left in a dangerous situation in relation to the gas fire. We received no reply to our letter or a follow up email.

William Briceland18 Feb 2021
1/5
Trustpilot

Disgraceful lack of customer care

I will be avoiding this company in future. My boiler was operational with a pressure release valve replacement required before they arrived. A job that they said they had done 6 month ago but one of their own engineers admitted had not been done. They left me without heating and hot water and despite calling them for an update on ETA for new heat exchanger I am still waiting for information on Monday. They left me with no heating or hot water since Thursday. Disgraceful!

Susan Keston9 Nov 2020
Get a Free Quote