Diamond Gas & Heating

quick and efficient service, thanks

Drew did an amazing good.

A late review but a good one. We have used the company after a recommendation for boiler service, HIVE installation and pressure problems resulting in fitting a shock arrester. Recently had a boiler moved out of bedroom and into loft area. Great service, polite workers and left all clean and tidy. Will be continuing to use this company.

We went with diamond green energy over a couple of other companies because of their attitude towards customer care, their promotional blurb states this as being the reason they started the company in the first place. To provide a service to the customer that was seen to be sadly missing from other suppliers. When they first visited to discuss our solar needs they were the company that answered all of our questions, not just with blurb, but taking the time to explain details other companies just ignored. Was really impressed with this first contact that I felt was not about trying to sell me a product but to discuss the options and he reasons behind these choices allowing us to make an informed decision going forward. They were not the cheapest quote, but we were able to negotiate slightly on this down to a price we felt happy to pay. Once signed up we had to repeatedly chase the scaffolding through diamond as we were never contacted by the scaffolding company as per diamonds instructions on what should happen next. The guys that turned up to do our installation I couldn’t fault. They worked really hard for the 3 days the install took, and took great care making sure that we were happy with every step of the installation. Once they left though and everything was switched on and working their customer support has disappeared. As this was the whole reason we went with diamond, and their own company statement say that this is a core principle of their business. We were told right from the beginning, that if we had any issues setting up the system they would be there to help, even coming out to set it up if needed (we are local to their head office) We are now 20 days on from the system being turned on and we have had no response to our e-mails regarding the certificate needed for the energy company in order to get paid for the excess energy generated. On its own not too much of an issue, but we have also asked for help setting up the system because we cannot figure out how to turn off the battery sending power back to the grid. Meaning we are currently paying to charge the battery from the grid on rainy days (or when it charges from the solar it then sends power from the battery back to the grid) meaning worst case the power we bought to store in the battery gets sent back to the grid… only for us to need to purchase the power a second time when the battery goes flat and we need to power the house. Even if the battery charges from the solar, it discharges to the grid meaning we have to pay for power instead of using our own stored energy. We have asked several times now for advice on this, and when we should expect our certificates but our e-mails go un answered.

Just had a lovely hot shower thanks to Diamond Green Energy and Stephen.

Absolutely fantastic company with a superb team of staff that put their customers first. We’ve used Diamond Green Energy for an AC installation and more recently a boiler problem. Both times every engineer has been friendly and professional. Completing the job and leaving no mess whatsoever. Plus they are great guys that are trustworthy and always took time to explain everything to us. The office staff that arrange and organise appointments are also so accommodating and helpful, working around the customer and going the extra mile to make sure everything goes smoothly. I can’t thank you enough for the outstanding customer service and excellent work. We won’t use anyone else and will recommend you to everyone we know.

Some teething issues with communication later in the process but can't fault their customer care. I would recommend them.

I cannot recommend Diamond Green Energy for a solar installation in good faith. I had a very poor experience with them and I would not choose to use them again or wish them upon anyone else. I suspect if you don't know much about solar, are happy to go with their standard off-the-shelf recommendation, and you are comfortable taking what they say at face value then you would probably have a better experience than me. Below is a selection of my concerns regarding Diamond Green Energy. - Predatory (bordering on harassment) behaviour when it comes to requesting payment before installation was complete. For the final payment alone, I received the following before the work had been completed: - Four emails from three different people with a link to pay. - Three SMS messages with a link to pay. - Three phone calls demanding payment and making sure I got the links. I ended up paying under duress before the work was completed. I raised this to Diamond via their complaints process and they chose not to respond to or to acknowledge this. - Consistent failure to communicate, both with myself and internally between office workers and engineers. I ended up having to repeat myself constantly and reverted to getting everything in writing. By way of example, an engineer came prior to install to measure up and confirm placement of components. None of this was passed along so the final install doesn't match what was agreed. I raised this issue twice in writing. Communication failures continued to happen after both times of raising the complaints. - In a clear case of purposeful misdirection, they quietly installed different hardware from what I purchased and hoped I just wouldn't notice. No ownership of the lack of communication once I pointed it out. Instead they tried to point the finger back towards the hardware supplier even though they admitted that they chose to install the different hardware without telling me. Eventually they conceded and installed the originally proposed hardware after “confirming with the manufacturer”. - There is zero recourse for the consumer built into their contract, it’s all one-sided for Diamond. Diamond breached their own contract in at least two different ways as outlined below. 1. Not informing me in writing of proposed hardware changes prior to installation starting. 2. Demanding payment before installation is completed. - The engineers are not provided all the tools required to do their job. On more than one occasion they had to borrow my ladders because “we brought the van without ladders today”. - They did not adhere to MCS standards: 1. They did not provide any paperwork at all at the point of commissioning the system (6.3.1 in the MCS standards). They had falsified date information (which I believe was to cover up their failings with MCS), on one certificate and hadn’t registered the other. 2. I did not receive any paperwork until 17 days after my system was commissioned. The paperwork provided at that point was still both incorrect and incomplete and I had to complain further to get them corrected. The corrected and completed paperwork was finally received 84 days after the commissioning date. - They do not follow their own complaints procedure. No final response received after 8 weeks. Complaint was closed without checking with me. - One of the directors of Diamond accused me of using bullying tactics when I told them I was considering exercising my consumer rights over starting a Section 75 claim for the lack of paperwork. The irony of their statement was completely lost on them given one of my complaints had been their tactics regarding payment in the first place. Diamond did provide an overall response to my official complaint: “We have made changes with staff and processes as a result of learning from your particular job. So please don’t think we are doing nothing about this.“

Booked online. Some young gents came to fit our air con. Everything was left tidy and they were very polite and professional. 100% recommend and the AI con works fantastically, finally getting good night's sleep in this heatwave!

Extremely professional and understanding.

Great experience with the team at Diamond Green! Highly recommend.

Had our annual boiler service today, as usual a very polite a positive engineer turned up. Respectful , conscientious etc. Best thing we ever did was have our combi installed 5 years ago by Diamond, always highly recommended by us ! :)

This is the best firm I've tried so far for service of my air source heat pump. Nick was very knowledgable. He was polite and professional and took time answering my queries. Nothing was too much trouble. I will use Diamond G E again for my next annual service.

Who ever is on standby this week ty so much for talking me through getting mynrads

Diamond energy has been fantastic from the start, great communication, very professional and provided all the information we needed. Drew who came over to replace our boiler worked really hard to get all the work done as efficiently as possible within 2 days. He communicated very clearly, was tidy and was just really friendly! The new boiler we have is great and works even better than expected, and all for a reasonable price. Also Drew highlighted we had a problem with one of our radiators that Diamond Energy then came back to review and diagnosed the problem for us. Brilliant company and would highly recommend.

Can't fault any part of the process from start to finish. They were recommended to me via a few work colleagues and I can see why. Professional, knowledgeable and courteous. Very tidy and the plumbing looks amazing. Offered me lots of solutions, we eventually went with new boiler, cylinder and moved from gravity fed to an unvented system. It's freed up space in the loft and water pressure is superb. We were kept up to date every step of the way, love the fact that so many employees are ex-mil, and to top it off the price was very competitive. Thank you all so much.

Very good Service. Excellent.i would definitely recommend this company to anyone

The service was completed with no fuss or bother whatsoever. Very satisfied

The third year I've used Diamond for annual boiler service, and will use them again. Efficient, friendly, tidy, absolutely no issues.

Absolutely brilliant experience. Just had a boiler and radiators fitted (Feb 2024). The whole process was how it should be done. Expert surveying, prompt accurate quote, professional work. Particularly shout outs to Dan (fitter), Drew (fitter), Steve (Surveyor), Louise (office) & Claire (office), all of whom were very pleasant to deal with. Thoroughly recommend.

He was very good and clean at his job and told me what he had done

Pleasant,efficient young man ,excellent job as usual by the engineer.

New boiler, couple years ago, excellent job. I found the co. very open honest and communicative. Engineers made a neat job of it; polite, cleaned up after. Always prompt answering questions.

Brilliant service as usual, big thanks to the engineer and back room staff.

The entire process from initial video survey through quote was flawless. Communication was excellent throughout. The installation of my new boiler was faultless from a quick text letting me know they were on the way. I was kept informed through the job. New boiler fitted and a good explanation on controls finished things up. I can thoroughly recommend this company.

Brilliant service from Diamond, we wont use any other company we always feel safe after the boiler service has been complete and will be for many years to come.

Had the annual service on our boiler and the engineer discovered the gas supply to our house was running slow. He contacted SGN and they sorted the problem within two hours. Excellent service as always.

New Worcester Bosch boiler ( Pulborough - West Sussex ) Responsive , prompt and Very reasonable quote. Professional and fast service. Highly recommend.

Diamond Gas is the best company I have ever used for aftercare with my gas central heating system. They always deliver an excellent service.

We have just had our gas boiler serviced for the first time after being supplied and installed a year ago by Diamond gas, The installation process was done to a very high standard and fully explained to us by the Diamond gas engineer. The boiler has performed faultlessly and is very efficient, the service we have received from Diamond Gas has been to a very high standard and we would thoroughly recommend Diamond Gas.

Amazing service, as always. Wouldn’t use anyone else

Shop around this was by far the most expensive, more than double the price for AC unit fitted £2100, V's £950 what I got from a reputable local company.

Brilliant company,excellent staff, unbeatable service

Had this company in to do a complete overhaul of my central heating. They did it in stages as I was decorating various rooms and they worked with me as I needed them. Perfect result and very professional. Highly recommended

No longer recommended

Quick response to our boiler breakdown, fixed next day

Excellent service by a very pleasant engineer, Rob

Recently used this company for a boiler replacement due to age of ours, and they were great. From start to finish, the quote process was easy provided via a video call. They did offer a finance option for payment which would have been a good option for some people. The installation date was prompt, we were not waiting for months and the work done on the day was to a high standard, with likable, friendly engineers. -I would recommend.

Swift response and professional help

Really impressed with Diamond right from our initial video consultation through to the install. We had Dan & his apprentice Jake come out to fit my new combi boiler and move it upstairs. Really professional job by both of them and nothing was too much trouble. Was kept up to date with all the works going on and really happy with how tidy they were and the quality of their workmanship. Would definitely recommend Diamond.

Diamond Gas and Heating installed my Mixergy Smart Hot water cylinder - they did a great job with the installation- highly recommended

Great service :)

Air conditioning install. Steve, Robert and J installed a new air conditioning unit in my home on Friday, they were quick, professional, reliable, friendly, clean and tidy with their work. Steve even came back on Sunday afternoon in install a smart app device to the system. Outstanding work and outstanding company. From the first day I spoke with the company to the day of completion they were on time with the plan throughout.

Diamond Gas and Heating are a great company. We contacted them spoke to Ian and had a follow up visit and we’re given a range of quotes. Dwaine invited us to the show rooms to see the products that were recommended in operation. We had a follow up call where Steve (one of the engineers came out to the property) gave an overview and pre install survey and answered some questions. The communication was first class even when having to give bad news / it was a very hot period and we had to reorganise install dates. This was done in consultation and they moved heaven and earth to accommodate. We are looking forward to receiving the aircon equipment and getting it installed - 👏 Diamond Gas well done from everyone at Ashbys Hotel

We had a new boiler fitted and I have to say that they are worthy of FIVE STARS . They were professional,friendly and highly efficient. I would like to give five gold stars to the fitters and CHARLOTTE in the office for her professional people management in getting things sorted.

Helpful, friendly staff & they done the job at short notice at a really competitive price. Would use again for further plumbing services.

Very efficient. Appointment kept and helpful engineer

Ian was on time. His knowledge and logic with figuring out the antiquated system we have is impressive. We're waiting for his quote to bring our system into the 21st century. My son recommended Diamond after the outstanding service he received from this company.

We have a service contract with Diamond and also Mum has her boiler serviced too. Always very happy with the service and customer support. Drew arrived on time, kept in contact with arrival time which was great. He was very thorough and has arranged for replacement parts which are covered under the contract. Thanks Drew and Diamond Heating.

Drew arrived well on time and very efficiently serviced our Viessmann boiler. He was very helpful and very patiently answered our questions and explained anything we weren't sure of, left everything clean and tidy when he had finished and was extremely professional throughout his time here. He is an asset to your company.

Had an issue with our boiler not working, and hadn’t seemed to work right since moving in a year ago. Had previously had engineers round but none of them seemed to understand our heating system. So as a last ditch attempt to fix it, I called Diamond Heating. They squeezed me in for a next day call out, and as arranged, Steve the engineer turned up. He knew straight away what the problem was. Fixed it, and explained clearly how the heating should work, that even my wife said she now understands the workings of a heating system! So impressed that I’ve now taken out a service plan with them! Well done Steve and all the team at Diamond Heating.

Great company, best recommended

Called them for an emergency as my boiler stopped working in my salon and they was out within half hour sorted my problem out was incredibly friendly very professional would definitely use them again.

I ordered a new boiler from Diamond as my old one had given up. We also wanted to change to a combi boiler and move it to where the old tank was. As we had no hot water or heating Diamond re-arranged engineers to fit us in. The whole process from my initial contact to the job being completed took less than a week. Nothing was too much for Steve the engineer or those in the office. Steve kept us informed how the work was going. Made good the removal of the old system and always kept things tidy. We are very happy with the new system, installed just in time for the cold weather thanks to Diamond!

Diamond Gas & Heating have proved themselves again and again to be very helpful, accommodating and knowledgeable. I would have no reservations in recommending them to anybody.

From start to finish this company provided an excellent service. Steve helpfully guided us through the complexities of selecting the correct boiler for our needs and patiently answered my many questions. The quotes were clear and easy to understand. The fitting was done on time and the house was left clean and tidy.

Engineer had a busy day and was running late and rang to check if he could visit in the evening which was fine for us. Good service by Engineer most would have gone home and left it till another day.

We have been using Diamond Gas for many years now and have always found all the team to be both professional and good value. In recent years we have had a new boiler fitted and subsequent services of both the boiler and gas fire as well as a few smaller jobs on radiators.

Sorry Louise fo taking so long with the review Thanks Jw

Diamond Gas installed our boiler and have serviced it every year since. Always great service and would highly recommend.

A recommendation from friends which we took and were grateful for. Diamond Gas were thorough, professional,punctual and efficient. They also did a job of making good and clearing up..and were pleasant and easy going to have in the home.

Excellent, efficient, timely and professional response to our central heating breakdown. Would definitely use this firm again in preference to British Gas

Very reliable company.used many times now always turn up on time & send a text message when engineers on his way which is very useful. Great service all round keep up the good work.highly recommended

I'm so impressed after several years of relying on a British Gas contract - brilliant and fast service right the way through. The engineer was bang on time and I even received a text when he was on his way with a tracker so I could where he was. Very professional and extremely thorough - checked and explained everything. Couldn't ask for more. Highly recommended.

From start to finish a brilliant service, full boiler, radiator and water tank replaced with new more efficient combination boiler and radiators throughout. Job completed on time, all areas left clean and tidy. Very happy with everything, particular thanks to Duane who was always available to answer calls and emails.

Joe and Matt from Diamond Gas serviced boiler and replaced single radiator with a double. Efficient, excellent job as ever. I have no hesitation in recommending Diamond Gas for expertise, quality and reliability.

Ian duane and steve were all wonderful Week before christmas the boiler packed up. We had no hot water or heating. We were struggling finacially (like most at moment). They took great pains in getting necessary work done to fit our budget. Cant recommend highly enough. Thank you so much x

Always available for help

If it's gas related it's diamond a go to great local company very competetive & very professional together with high standards of work

The service was great and I had a very good gas boiler fitter named Scott. He was very knowledgable and helpful. I’m happy with m boiler.

Very professional and went the extra distance to help us out! Very impressed. Thank you very much!

Professional.. reasonable.. and efficient quote to finish !! Highly recommend 👍

Excellent and professional all the the time

First class service from start to finish. Very clean work, excellent customer service, in all 10 out of 10, can't recommend highly enough.

Company rang to remind me annual boiler service was due , date arranged and confirmed via email. on the day you get a message to confirm engineer on his way. Service friendly and efficient , i have never had any problems with diamond and have been using them for many years highly recommended.

Diamond gas were quick and professional when installing a new boiler within a few days when the snow hit and we were without heating and hot water. Very fair quote. Would highly recommend.

just had my new central heating fitted and can't praise this company enough really lovely guys very respectful and tidy workers as well always kept informed what's going on. 100% recommended pleasure to do business with