Gas Monster Limited

Initial problems with work carried out by the company. They came out and tried to charge me to rectify their work. Work which did not identify or rectify the situation. Other plumbers had to sort out the issue, which was banging in the pipes. The pipes are now leaking and they are refusing to come and rectify the works. Pipes were originally installed unevenly, for want of a better word, and not lagged.

Gas Monster installed a new boiler and central heating in our flat. Their customer service was exceptional, from the first visit to the installation, the team were friendly and helpful, and the work was completed on time and to a very high standard. I would unhesitatingly recommend them and will definitely use them again.

I recently had an extension and kitchen renovation. For heating, plumbing work I have Gas Monster Ltd came and make a survey. It was very smooth process throughout, as Wayne quickly assign me to one of the engineer Billy to work together with my kitchen installer to cap off the gas, install new radiators and also fitted the plumbing for washing machine, dishwasher and fitted the sink drain pipe. Their engineer are very professional, punctual and polite and getting the job done on time and keeping the place tidy. Rebecca also help me to ensure their engineer fit to my project schedule. I am very please with the services they provide. I highly recommend this company and its local to me.

The quality of their work is OK. However, I had to pay £120 for a job, where they pressed two buttons on the controller, and with the testing it took 10-15 minutes altogether, no tools or spare parts used at all. When I asked them why they charged such a high amount, they said it is their minimal charge. When I asked why I can't see this in their website, they said that they do not advertise their fees in their website. Be sure, that you call them only, when you are willing to pay at least £120, even if the problem is much smaller.

Wayne came out to see what was required and very quickly understood exactly what I wanted. The bath, old WC and sink were removed on day one and taken off site. The chippies were friendly and understood the requirement which they completed efficiently with no mess left behind. The electrician completed the new wiring in record time, again with no mess. The plumbers made sure that I was completely satisfied and again left no mess after them. Finally the new flooring looks fabulous and I cannot fault the tradesmen. All in all a great job and I would definitely recommend them. Rebecca was super efficient at answering my queries and a great help. I love my new utility / laundry room.

Why are you looking at this review rated poor? Are your intentions to decide whether to use this company? Do poor reviews provide any useful purpose? If your mind is already made up then despite seeing adverse reviews and hearing of the cheap estimate it still leads one to ask what harm can it do? Well I ignored such reviews and still went ahead and appointed GasMonster of Cottenham. Here are some questions you should consider based upon our truthful and factual experiences. Would you choose a company that despite the Trades description act and the WHICH code of conduct still sent an unqualified convicted burglar to our home? A company that was subsequently referred to the WHICH compliance unit for investigation? A company whose quality of work was described in an independent RISA report as “not of an acceptable standard”? A company that was ordered by the Furniture and Improvement Ombudsman in October 2023 to pay us compensation? If the answer is still yes, then wasn’t reading this review rather pointless? So buyer beware or “Caveat Emptor” after all it’s your decision and your money.

We used Gas Monster to replace our 20 year old condenser boiler and hot water storage tank with a Combi Boiler. Their work was excellent the staff were professional and were very helpful and kept us informed throughout the installation. You wouldn't have known they had been here they were so neat and tidy (ie no mess or debris left behind). Highly recommended.

Gas Monster has recently replaced my boiler and installed a number of new radiators and thermostatic radiator valves with a full system powerflush. I was very impressed with the whole process from the initial survey by Wayne, the prompt answering of my questions and the politeness and efficiency of the engineer Dane and his apprentice Nathan. I had been dreading the mess and disruption the work would cause over a four day period but thanks to the professionalism of the operatives and the care taken by them it was much less stressful than I had anticipated. I am now looking forward to a warmer winter and a trustworthy company to service my boiler in the coming years.

Recently had a combi boiler installed by Gas Monster and the experience with them has been 5-star from start to end. Wayne was very knowledgeable and helpful. As this particular work required a new gas supply, he took the time to explain all the steps involved in the procedure and found an installation option that would suit my needs. The team that installed the entire system was skilled, tidy and courteous. They did a brilliant job in a surprisingly short amount of time, particularly Dayne who was also very patient in answering my numerous questions and in keeping me involved throughout the process. Friendly, professional and clean, I would highly recommend Gas Monster.

Extremely impressed by the whole service from Gas Monster when my boiler died during a cold week in February. I phoned around a few companies, and Gas Monster were the first to come out to have a look, the quickest to send me a quote (which was a fair price, and very similar to several other quotes), and were able to get the work done sooner than anyone else. The new boiler was fitted by Dane, who was very friendly and communicative, and did a brilliant job. I'll definitely use Gas Monster again.

Gas Monster replaced 16 radiators in my house earlier this year and did a great job. So when I decided to replace my 32-year-old boiler with a new more efficient boiler I had no hesitation in asking Gas Monster to do the work. Wayne took the trouble to visit my house so we could review the existing installation and decide on the best replacement. Reese and Jack with help from Wayne and electrician Simon have just completed the installation of a Worcester Bosch Greenstar 24Ri They arrived promptly at the agreed time and completed the work in one and a half days which was less than their estimate of 2 days. The new boiler and associated pipework was installed neatly. The flue outlet through the kitchen wall needed to be raised to suit the new boiler and Reese did a great job of cutting out the bricks where the old flue exited and replacing them with new bricks. He also explained the CO and CO2 tests and minimum and maximum load tests that he did when commissioning the boiler. During the work, they were polite, helpful and kind. On both days before they left they did a great job of cleaning up after their work. My new boiler is working very well. I am very happy with the work which Gas Monster has done for me and I highly recommend them.

Last week, Elliott and his colleague from Gas Monster Ltd replaced 16 radiators, installed a new pump and new three-way valve. They arrived to start work exactly at the time agreed and throughout the installation were hard-working, efficient, friendly and helpful. After the installation they performed a PowerFlush to remove corrosion deposits from the pipework and the boiler. The new metric sized radiators replaced heavily corroded 32 year old imperial sized radiators so changes to the pipework feeding the radiators were needed and they did this very neatly. The work was completed on time and I am very happy with their work. I can definitely recommend Gas Monster for heating and plumbing work in the Cambridge area. Many Thanks! Kind Regards Jerry

We were very impressed with the care taken by Will and his colleagues over the installation of our new boiler, which was also being relocated. We appreciated their considerate approach, their tidiness, the clarity of their communications and the quality of their work. They are strongly recommended.

They talked me through stopping the leak when it happened and then booked an appointment for the full repair. When the plumber turned up he was polite, quick, tidy and Covid-safe. The first repair didn't quite hold, so I called them back. The plumber was back in about 15 miss. All is fine now. They invoiced me afterwards and online payment was straightforward.

Will was great - clever, fast, efficient, effective, tidy, polite, pleasant. What more could one ask for!? He actually arrived early but phoned to check first if that was OK - it certainly was. Booking the job and paying for it online was quick and easy too. The job was fitting a new water pump to a very old system with ineffective isolation valves.

Quote did not include all I asked for. When fitting an additional and absolutely pointless stop valve (instead of replacing one which drips) they have managed to cut through my kitchen waste pipe. I have only noticed three weeks later. Thank goodness it was not a gas pipe. They have failed to repair a bath scratch they have caused. I have paid in full only because their extremely obnoxious email was making me sick and I wanted to put this behind me.

Gas Monster carried a new boiler installation (Worcester-Bosch 8000) and also a new gas pipe to provide adequate pressure. The job was completed over 2 days (plus one day for power flushing). The engineer was professional, respectful, worked quietly on both days. We only had one night without heating but that was a small price to pay for such a great job, in the middle of the winter as well. I have trusted Gas Monster for servicing my old boiler which was really poorly installed and maintained by another company. Their installation of the new boiler was impeccable, hassle-free and although it is still early days, I have peace of mind and confidence that they can fix any possible future problems. Highly recommended!

We recently had our boiler and cylinder replaced by Gas Monster. They came recommended to me and their quote was very competitive. This was a big job and our fitter Brian worked tirelessly for the week. The work was completed in a highly professional manner and I would not hesitate to recommend Gas Monster.

After 30 years it was time to refurbish our downstairs cloakroom. We had various ideas and we were happy that we were listened to, understood and suggestions made to make even more improvements, providing that they would fit in with our budget. We received full itemised costings and a work schedule, which suited us perfectly. Everything was done on time and according to budget. We were very impressed with the professionalism and helpfulness of the Gas Monster team. Any minor issues that surfaced were explained to us and excellent solutions found. We couldn't be happier.

Gas Monster was recommended to us. Old back boiler replaced by a new combi boiler. Our installer, Reiss, worked brilliantly - his work was impeccable. He kept us informed of what he was doing at each stage of the job. He was very kind, polite and just got on with his work to a very high standard and if we had any questions, he took the time to answer without hesitation. The work was finished on time. An old radiator decided to leak rusty water on the day the work was finished - I made a phone call and they came back straight away to isolate it (nothing to do with the work). We are now having old radiators replaced by them. I would highly recommend Gas Monster, 100%.

Wayne, Will and Simon have completed an excellent job. Great team, expert knowledge and pleasant to deal with. The quality of the work has been really good and I feel I’ve received great value for money. I’ll certainly be approaching them for any further work on my home.

Very satisfied. Friendly, polite workmen. Clean and tidy and job seemed to go as planned and as it was explained to us.

Replaced our boiler, hot water tank and all the controls. Great job; professional, considerate and friendly. Finished off the details and tidied up.

Old original boiler was 30-40 years old. It was getting noisy and less efficient and spare parts hard to get hold of. Gas Monster produced a quotation for us for a new boiler more efficient combination boiler and a new thermostatic shower, to replace our old electric shower, previously installed by Wayne. Boiler was moved from the kitchen to the airing cupboard on the landing, with minimal disruption. Had a new Lyric T6R WiFi thermostat installed. Old flue removed and pipework removed from kitchen and hole in wall bricked up. Tiles were replaced in the bathroom where old shower was. New flue had to be installed through the loft and roof. Straightforward, tidy, efficient and courteous service. Job completed in 5 days on time and as expected. we have used Wayne and his team for years to service our previous boiler. Also replaced our toilet & shower over the years. Highly recommended. Thank you to Wayne and Gas Monster team.

Great service. The quote was competitive and the installation was excellent. All queries were quickly answered and all paperwork guarantees etc were emailed within in days of completion. Really happy with install.

Excellent service from the initial site survey, easy to understand information (no jargon), the quote was received within the agreed time-scale. A mutually acceptable installation date was agreed. On the allotted date Wayne arrived & introduced me to his team of installation engineers. This was great as he explained to the engineers the exact installation plan. The installation engineers always (5 days) arrived at the exact predefined start time, their approach to the work very professional & also respectful of property. Dr Alastair J. Durrant

Efficient, fast installation of new boiler. All aspects of installation explained patiently. Very clean worker, put lots of dust sheets down, I really appreciated this. Light fitting got broken, but all successfully resolved. Pleased with new boiler, lovely to have warm house again.

Wayne and the team fitted a new combi boiler in our house two days after moving in. They were all really friendly and provided a great service. We're now planning on using them again to replace all of our radiators!

We used Gas Monster to replace an ageing warm air heating system with central heating and radiators throughout the house. Everything about the service was was fantastic, from the initial enquiry, quotation visit, quality of the work itself and aftercare. They have very responsive and professional customer service which is a real plus. I would definitely recommend Gas Monster to anyone looking for this kind of work.

We needed to replace our existing combi boiler as it was malfunctioning every year. Gas Monster provided us with a quote promptly and even honoured the original price when we finally decided to proceed. They accommodated our needs on dates and completed the work (removal of exisiting machine, replacement, flushing system out and commissioning) in the specified time frame. They showed up on time, worked tidily, and were happy to answer questions. We have used them before and will use them again.

I used Gas Monster to run an annual Gas check on my boiler, central heating and gas appliances. Booking the appointment with them was simple using the on-line tool and they were very responsive to an additional question that I had when I contacted them by phone. The engineer arrived on time and was very polite and efficient fully explaining everything to me and addressing some questions I had about the central heating system. I am very happy with the service they provided and would definitely use them again.

We recently had two bathrooms completely renovated – walls, floors, ceilings, plumbing. It was quite a big job, so we took several estimates from local firms (some personally recommended), and after careful consideration and meetings, chose Gas Monster, who had recently and successfully fitted a new hot water system for us. The work took several weeks from ripping out the old stuff to the final lick of paint, and we were very satisfied with the whole process. Wayne Bell, who runs the company, was a frequent and very helpful presence, and Will Stockton, the senior plumber, was with us practically every day, keeping everything up to schedule and checking all the work in a very professional manner. We were very impressed with the quality of the craftsmanship, and got on very well with all those (eight men in all – various trade specialists - if I remember rightly, including apprentices) who took part. They were cooperative, efficient and tidy, and did their best to minimise inconvenience to us. All the work was done according to the agreed schedule. We recommend them very highly.

Efficient, friendly, responsive and reliable service, fitting new boiler (and smart controls) in next to no time with next to no trouble.

The work was done efficiently and within reasonable time. The workmen were freindly, considerate and tidy. The boiler now works well and I'm sure it benefit is in terms of energy costs.instal!action was not without difficulty because of its site in a bedroom and in a cupboard with restricted space. We trusted the advice that our old boiler which we inherited would become increasingly costly to maintain and was pretty well obsolete Thank you very much for your service and we look forward to your serve in the future.

From visiting to assess the job, providing a quote, discussing and accommodating changes, through to implementing the work, communicating about and managing challenges, and keeping the house clean and tidy, Gas Monster delivered at all stages. We have used them to repair a boiler, service boilers, and carry out a heating system replacement. We have always received friendly but high quality customer care and advice alongside professional work. Most recently work done to replace our heating system was extremely neat and tidy and we are extremely happy with the work.

New boiler installed to replace an old one. Very prompt at coming to give a quote and provided good advice - quick to get back with a date for the installation. All work completed quickly and to plan. They were very respectful in the way they worked and took care and tidied up afterwards. Communication was excellent and I would definitely recommend/use again.

I chose Gas Monsters Ltd from this website and I wasn't disappointed. Wayne, the owner, was so patient with my requests and his advise was spot-on. We had to wait a a couple of months to get all the trades in place, tilers, plumbers, electricians etc - which told me the company was worth waiting for. All the trades were professional, talented in their field and polite and tidy to boot! If I had any queries I could ring or email Wayne and he'd answer quickly and with solutions to my queries. An excellent service. Will use this company again.

After returning from holiday to discover I had no hot water or heating at all, GasMonster were able to respond within 48 hours of contact and very quickly diagnosed the problem. They offered me a range of solutions, and I opted for a complete system replacement. They handled everything, including the removal of the old equipment, bringing the pipe work up to current building regulations and the installation and test of the new equipment. The new system is a massive success, and the engineers were courteous and helpful throughout the whole process. I can happily recommend their services and attest to the competency of their staff.

We have had two lots of work done by Gas Monsters. Firstly they changed all the downstairs radiators. Excellent work and good advice on the type of radiator to have. We then asked them to replace our 21 year old boiler plus sort out another problem. We got good advice on the kind of boiler to have and a senior engineer diagnosed the problem we had had for several years that no one else had diagnosed. The men work well together. They arrive on time and look professional in their corporate clothing. They lay down floor coverings and clean up after they go. Communication during the job being done was excellent so we knew what was going on. This is a good company and we have no hesitation in recommending them to people.

The staff are very friendly and helpful. Excellent service and staff very helpful. From now on I will not go anywhere else.

My old electrical hot water system, installed in an unvented store cupboard, finally died leaving me with no hot water. A number of plumbers who, once they saw the old system and its situation, disappeared without further contact. Trading Standards put me onto the local Which Trusted Traders, who gave me a list of 3 names. I phoned Gas Monsters; Rebecca answered and was most friendly and helpful, making an early appointment and warning me the work could not be carried out for a further 6 weeks because of their commitments - I knew where I stood. I think it was Brian who came to view. He saw no problem with removing my old system and suggested replacing it with a Megaflo Eco Unvented Hot water cylinder. What a relief to have a solution to my problem at last! Installation started on 2nd Jan and took three days. A decorator was scheduled for Monday 7th Jan to paint the plinth and on Fri 11th Jan an electrician signed off the installation. The old, very rusty system was taken away a few days later. All work was completed with minimum fuss - any resultant mess was continuously and quickly cleaned up. The workmen worked efficiently. I was worried that I would lose cupboard space in my tiny kitchen when they ran the pressure pipe from the storeroom to the outside wall but, no, it was positioned between the cupboard end and the bedroom wall to reach the outside wall. Again, professional clean work was completed efficiently. I happily recommend Gas Monsters.

Gasmonster did an amazing job fitting a beautiful new bathroom and installing a new boiler for us. All the tradesmen were very professional and friendly. I couldn't be happier with the result, and the price was very reasonable. Will definitely be using them for any future work and would recommend to anyone!

A first class job from getting the quote from Wayne to the installation of a replacement boiler and shower. The team were efficient, friendly, prompt and cleaned up at the end of each day. I highly recommend Gas Monster and would use them again.