From Norwich, Allstar Systems Plumbing & Heating provides expert plumbing and heating services throughout Norfolk for both residential and commercial clients. We prioritise safe working methods, dependable service and durable performance across all heating, boiler and plumbing systems we service. Our company delivers a wide range of tailored solutions to meet varying property needs.
We work with homeowners, landlords, businesses and commercial property managers, offering boiler installation, servicing and repair, emergency heating assistance, central heating upgrades, power flushing, hot water system maintenance, radiator services, underfloor heating, bathroom plumbing and general maintenance. In the commercial sector, we provide boiler servicing and replacement, gas and LPG services, temporary boiler hire and planned maintenance contracts. Our engineers ensure all advice is clear and practical, helping clients make informed choices regarding repair, improvement or replacement of systems.
We work with homeowners, landlords, businesses and commercial property managers, offering boiler installation, servicing and repair, emergency heating assistance, central heating upgrades, power flushing, hot water system maintenance, radiator services, underfloor heating, bathroom plumbing and general maintenance. In the commercial sector, we provide boiler servicing and replacement, gas and LPG services, temporary boiler hire and planned maintenance contracts. Our engineers ensure all advice is clear and practical, helping clients make informed choices regarding repair, improvement or replacement of systems.
Served areas
- Norwich, Norfolk, Aylsham, Attleborough, Blakeney, Brundall, Burnham Market, Coltishall, Costessey, Cromer, Dereham, Diss, Downham Market, Fakenham, Great Yarmouth, Hethersett, Holt, Horning, Horsford, Hunstanton, King’s Lynn, Long Stratton, North Walsham, Reepham, Sheringham, Swaffham, Thetford, Wymondham
Details
- Year established: 2011
- Employees: 4
- Licensed
- Insured
Highlights and features
- Trusted Norwich-based plumbing and heating company
- Serving domestic and commercial customers across Norfolk
- Boiler installation, servicing and repair specialists
- Emergency plumbing and heating support available
- Gas, oil, LPG and electric heating expertise
- Commercial boiler servicing and replacement
- Power flushing and heating system maintenance
- Central heating upgrades and radiator work
- Hot water systems and underfloor heating support
- Bathroom plumbing and installation services
- Qualified, experienced plumbing and heating engineers
- Gas Safe and OFTEC registered services
- Worcester Bosch Accredited Installers
- Norfolk Trading Standards Approved / Norfolk Trusted Trader
- Which? Trusted Traders approved
- Clear advice with no-pressure recommendations
- Reliable workmanship focused on long-term performance
- Local knowledge of Norwich and Norfolk properties
- Support for homes, landlords, businesses and commercial sites
- Professional service from routine maintenance to complex projects
Associations and certifications
- Gas Safe Registered
- OFTEC Registered
- Worcester Bosch Accredited Installers
- Which? Trusted Traders
- Norfolk Trusted Trader / Norfolk Trading Standards Approved
- TrustMark Endorsed
- Anglian Water Approved Plumbers
- CIPHE member
- CHAS Elite Accredited
- SafeContractor Approved
- G3 Unvented Hot Water Systems qualified
- NVQ Level 2 & 3 qualified plumbing and heating engineers
Payment methods
- Cash
- Mobile payments
- Bank transfers
Services
Our boiler installation service is designed to improve heating reliability and hot water performance across a range of properties. We install gas, oil, and LPG boilers in residential and commercial buildings. Before recommending a replacement, we evaluate your current heating setup and usage requirements. This allows us to provide practical advice and install a boiler suited to your property. 
Our boiler repair service is designed to support both residential and commercial customers with heating breakdowns and system faults. We investigate each issue thoroughly to determine the most appropriate repair approach. Our engineers work on gas, oil and LPG boilers as well as related heating system components. Whether the problem involves pressure loss, noisy operation or faulty controls, we provide practical assistance. We are committed to restoring heating and hot water safely and efficiently. 
We offer specialist power flushing services to remove sludge build-up that affects heating performance across a property. Our engineers inspect the heating system carefully before any flushing process begins to ensure the correct approach is taken. Power flushing can help improve circulation, reduce boiler strain, and eliminate cold areas within radiators. Every service is carried out professionally with consideration for the overall condition of the heating system. 
At Allstar Systems, we help homeowners resolve a wide range of hot water system faults with professional repair and installation services. Problems such as no hot water, poor pressure, faulty thermostats, and noisy cylinders are thoroughly investigated by our qualified engineers. We ensure every system is correctly sized and installed for the property. Our approach focuses on delivering reliable long-term performance for domestic hot water systems. 
We offer underfloor heating installations and repairs for homes seeking dependable heating and improved comfort beneath the floor surface. Our services include electric systems, wet systems, retrofit installations, and heating upgrades tailored to different property requirements. We carefully assess each system before carrying out any work to ensure effective performance. Our engineers also provide support with controls, thermostats, and zoning adjustments. 
We offer a responsive emergency plumbing service designed to address urgent faults quickly and efficiently. Immediate action is essential when plumbing problems occur, and our team works to minimise disruption and property damage. We undertake repairs for leaks, burst pipes, and other emergency plumbing issues. Our customers value our reliable service, expert guidance, and professional approach. 
At Allstar Systems, we specialise in bespoke bathroom installations for homeowners seeking a premium finish. Every bathroom is designed with the property layout and practical requirements in mind. From concealed pipework to frameless showers and recessed storage, all features are professionally integrated. Our experienced team ensures the completed installation offers reliability, comfort, and a high-quality appearance. 
We offer commercial boiler servicing that goes beyond a standard inspection by reviewing the overall condition and performance of the heating system. Our servicing process includes safety checks, maintenance assessments and identification of any developing issues affecting the boiler. Supporting gas, LPG and oil systems, we help commercial premises maintain reliable heating and improve the long-term efficiency of their equipment. 
Our team delivers commercial gas and LPG solutions for offices, retail premises, schools, industrial buildings, and hospitality venues. Services include installations, gas testing and purging, pipework support, and safety inspections. We prioritise detailed preparation and structured project management throughout every stage. By focusing on health and safety, we help commercial sites continue operating as smoothly as possible. Gallery
Reviews (44)
Rob Dunderdale
Mar 03, 2026
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Elisa Moore
Feb 22, 2026
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We had an issue with the boiler so I called Allstar Systems and William got straight back to me and arranged to visit within the hour. The issue was sorted quickly so we had access to heating and hot water. William provided me with details of the repairs that were required and an appointment made for these to be completed as well as a boiler service. A quote was provided for the work which I agreed to and the work was carried out a few days later. I am impressed with the communication received and the work undertaken by William and the team. I will not hesitate to use this company again.
Nunu
Dec 23, 2025
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Really great service from William from Allstar Systems. I gave him a call directly because our boiler packed up on Friday evening. He attended within a couple of hours even though he was miles away attending another job. He showed me the problem with the boiler and explained everything in layman's terms. He got the boiler working and gave honest recommendations for the future regarding the boiler. I have no hesitation in recommending him and this company.
Jonny Benton
Nov 26, 2025
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Sarah Lewins
Jul 25, 2025
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Initially called William at Allstar because of concerns with my underfloor heating.
He identified the problem without hesitation and advised other areas in great need of improvement, which have already made a significant, noticeable difference.
I cannot speak highly enough of both him and Ashley. Both were very polite, professional, tidy and punctual.
Had all work carried out to the highest standard and at every stage, William was very patient, explaining everything in full.
I would definitely recommend and will be using them again without hesitation.
Excellent service
He identified the problem without hesitation and advised other areas in great need of improvement, which have already made a significant, noticeable difference.
I cannot speak highly enough of both him and Ashley. Both were very polite, professional, tidy and punctual.
Had all work carried out to the highest standard and at every stage, William was very patient, explaining everything in full.
I would definitely recommend and will be using them again without hesitation.
Excellent service
Nathan Gull
Jun 16, 2025
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Called out Allstar for a broken-down boiler which had been on its last legs for a while. They were the quickest company to respond, came straight out, organised a replacement boiler and installed it quickly and professionally. Absolutely 5-star customer service and looked after us really well, highly recommend!
Andrew Cox
May 28, 2025
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I called Allstar Systems at 5.00 in the morning when I found that my boiler was malfunctioning. William identified the problem and talked me through the process in making sure the house was safe and secure. The next day his team installed a new cylinder and I was impressed how swiftly the company resolved this problem and took the stress out of a really stressful situation. Couldn't be happier with the service provided.
Mn Baker
Apr 04, 2025
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William came out on a Saturday when our boiler broke down. He worked for three hours to get the hot water working and recommended a new boiler. The whole system was cleaned and the boiler replaced in a single day the following week. The team worked so hard to make sure that we were not left without heating. I was not charged for the original call out. Very happy with the service, andvice and our new heating system. It has made an enormous difference!
Annie Naylor-Clements
Jan 31, 2025
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Will came to service our old oil fired boiler and discovered that it had been fitted incorrectly and that the subsequent services (by other engineers) had resulted in incorrect parts being used, rendering our boiler unsafe. We decided that a new boiler was the way to go, being a Friday, time was tight but by midday Will had ordered the new boiler ready to install on Monday.
He and Ash worked hard in horrible weather to ensure the new boiler was fitted and running well. To say they have made a difference to our house is an understatement, our radiators are warmer, the water pressure has improved 10 fold and we are far more relaxed knowing that the boiler is safe. I'd happily recommend them to anyone in need of a heating engineer.
He and Ash worked hard in horrible weather to ensure the new boiler was fitted and running well. To say they have made a difference to our house is an understatement, our radiators are warmer, the water pressure has improved 10 fold and we are far more relaxed knowing that the boiler is safe. I'd happily recommend them to anyone in need of a heating engineer.
Jeanette Stokes
Jan 23, 2025
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Jenny Mollan
Jan 14, 2025
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We called William in to service our 17 year old boiler. On inspection Will pointed out several major problem areas and we concluded that it was not economical to.carry out the necessary repairs.
Our stars must have been in alignment that day: the replacement we had selected was in stock and with a bit of juggling and non-stop hard graft the new boiler was up and running just 27 hours later, with a beautiful array of orderly copper piping replacing the Heath Robinson arrangement that had gone before. Everything was left clean and tidy,, we're enjoying the greatly improved heating system, and last but not least, looking forward to significantly lower bills.
We took a punt on Will and it has been money well spent. Thank you!
Our stars must have been in alignment that day: the replacement we had selected was in stock and with a bit of juggling and non-stop hard graft the new boiler was up and running just 27 hours later, with a beautiful array of orderly copper piping replacing the Heath Robinson arrangement that had gone before. Everything was left clean and tidy,, we're enjoying the greatly improved heating system, and last but not least, looking forward to significantly lower bills.
We took a punt on Will and it has been money well spent. Thank you!
Brenda Kallend
Nov 28, 2024
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Hero Chalmers
Nov 25, 2024
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William really saved us when our boiler gave up on the coldest day of the year. He was round within the hour and, when it turned out the old boiler was finished, he arranged to fit a new one with a fantastic new hot water system within days. He was friendly, efficient and clear about our options. He and Ashley worked incredibly hard to get this sorted and make sure our radiators were working optimally. It feels like a different house! Would highly recommend Allstar on the basis of this experience.
Trudi N.
Sep 14, 2024
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Allstar have been brilliant whenever Ive needed them. William came out really quickly to fix some issues and restart my mums oil fired boiler, so that she wasnt left for a 4th night without heat, after a long wait for an oil delivery in winter. He came round soon after the oil arrived, and was outside in minus temps, on a dark night to get it all running for her. He went above and beyond to help.
Recently, he also came out urgently on a weekend, to stop a leak on my dads gas boiler. He then checked the whole system out to make sure it was safe, and found a couple of important issues which he dealt with straight away. The heating and boiler now runs more efficiently, and he gave advice for future improvements, without being at all pushy. He really knows his craft and explains things easily to you.
Ive found them to be incredibly helpful, trustworthy, reliable and well priced. A rare find these days! I am a genuine customer with no personal connection, and I highly recommend them.
Recently, he also came out urgently on a weekend, to stop a leak on my dads gas boiler. He then checked the whole system out to make sure it was safe, and found a couple of important issues which he dealt with straight away. The heating and boiler now runs more efficiently, and he gave advice for future improvements, without being at all pushy. He really knows his craft and explains things easily to you.
Ive found them to be incredibly helpful, trustworthy, reliable and well priced. A rare find these days! I am a genuine customer with no personal connection, and I highly recommend them.
Philip Moxon
Mar 03, 2024
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Talked through and explained works needed to replace boiler and secure functioning of new boiler for anticipated lifespan. Heating system zoned. All explained. All work neatly done with attention to detail. All left clean and tidy, even filled old holes left from previous installation done by others. Would recommend to anyone who wants good quality and professionalism.
James Gordon
Dec 22, 2023
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Stephen Holt
Dec 21, 2023
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Alison Toon
Dec 15, 2023
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Paul Stokes
Dec 12, 2023
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Simon Hollis
Dec 07, 2023
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Jo Barker
Dec 04, 2023
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Fantastic service, highly recommended! Boiler failed to work 6am Saturday morning, contacted Allstar Systems, instant response and engineer out by lunchtime. Diagnosed problem straight away, all fixed & hot water and heating back on by the afternoon! Do not hesitate to contact Allstar Systems, very genuine and even contacted us later to make sure everything was all going well. Well done Allstar, will be recommending you to friends and family.
Aiden Rice
Dec 03, 2023
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Kinvallatas K.
Nov 28, 2023
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Sue Cheng
Oct 22, 2023
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Will and his team did an excellent job of installing an unvented cylinder, upgrading the central heating system and a new boiler. He also helped to replace new kitchen and bath taps. Will is very patient in explaining what works needed to done and why. He was also on hand and available to answer questions I had no matter how busy he was. Definitely recommend
Lucy Mowatt
Oct 19, 2023
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Sebastian Slomkowski
Sep 21, 2023
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Brett M.
Sep 19, 2023
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Tara Lemay
Sep 18, 2023
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We have used Allstar systems for several years. On my own property and for my own customers. They have just installed another heating system for my company. I highly recommend them to all my customers as they are reliable, efficient, and good value for money. Work is always at a high standard. Thanks will and boys. John LeMay, Merryfield services
Kelly Smith
Sep 18, 2023
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Great service from this company, reasonably priced, professional and highly experienced. Have used to recently fit out a full bathroom suite and service boiler, will not use anyone else! Highly recommend! Services:Heating system repair, Shower installation, Plumbing pipe repair, Heating system installation, Install thermostat
Simon Nebesnuick
Sep 06, 2023
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Arthur Kidd
Aug 29, 2023
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Hi there William have been working on my project and I must say he was understanding and very patient with us not pushy when we couldn't make up i mind on thing he explains things to us to a tea and work with us Once we made up I mind his workmanship was 5star and him and his team work there socks off to complete the job by our deadline I can't praise him enough very satisfied with him and would recommend him to anyone Many thanks
Richard Pettit
Jul 01, 2023
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I found Allstar Systems via Which? Trusted Traders, they looked good so I contacted them and asked for a quote for the installation of an unvented hot water tank, which I accepted. They turned up when they said they would and just worked solidly. Will made several suggestions, which I agreed to, and I asked for some extra work to be done. In all it took them 5 days but now I have high pressure hot water system (decent showers!), a pressurised, zoned, filtered and cleaned heating system, a whole-house water conditioner and some awkward pipes given better routing (which was actually quite complicated).
They were all very friendly, knowledgable and skilled, they cleaned up after themselves, they even removed their shoes every time they came into the house! They are now the only plumbers I will call. Thank you Will, Ash and Banki
They were all very friendly, knowledgable and skilled, they cleaned up after themselves, they even removed their shoes every time they came into the house! They are now the only plumbers I will call. Thank you Will, Ash and Banki
Laura Parry
Mar 26, 2023
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Dariush Fassihi
Mar 05, 2023
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Have used previously for an oil boiler repair when my usual engineer was busy, Will was very responsive and professional. This time I needed a whole system replacement and my engineer could only install in a couple of months. Will was again very quick to reply, provide a full and accurate quote then scheduled me in within a few days! Service:Heating system installation
Ben Ogley
Feb 24, 2023
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Michael Clay
Jan 23, 2023
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Aimee Leggoe
Nov 25, 2022
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allstar recently replaced my boiler. Amazing service from the most professional team. Could not recommend them enough. Will was very clear on the phone and had a brilliant manner. Ashley completed the work quickly and to the best standard. We now have a top of the range Worcester bosch boiler supplied with a 10 year guarantee. We will be using them in the future to replace our bathrooms.
Anshuman Mondal
Nov 09, 2022
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I have been using All Star systems for several years. As a Which? Member, I found them using the Which? Trusted Trader system, and I am very glad I did. Will and his team are excellent. Over the years, they have upgraded our old gravity based heating system to a pressurised system, installed new pumps, and serviced our two boilers (one in the annexe) annually. They are professional and courteous and I highly recommend them.
Lauren Mills
Oct 03, 2022
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Called Allstar Systems for an emergency call out to check the boiler and oven, after our carbon monoxide alarm went off. Will was upfront with the cost, came as quickly as he was able to, and kept in touch with us when he was running behind schedule. He was incredibly knowledgeable about our boiler and did a thorough check for any carbon monoxide. Would recommend to anyone who requires help with their boiler/heating systems.
Vicky McKenzie
Sep 30, 2022
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Im so impressed by this company. My boiler broke on a Sunday, and by Tuesday Will and his team had installed a new boiler. They were everything you ever want from such a company; professional, knowledgeable, very prompt in all communication, excellent workmanship, everything tidied up after them etc. They went above and beyond to ensure that I was not left in minus temperatures for a minute longer than necessary.
I will absolutely be going back to them for servicing and any future heating issues.
I will absolutely be going back to them for servicing and any future heating issues.
Francis Reed
Jun 26, 2022
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Allstar Systems installed a new replacement gas boiler for me a couple of years ago in my new home in Norwich and they have completed the annual service on it twice since then. All is going well, and I am very pleased to have a new (and much more efficient) Worcester Bosch condensing combo boiler installed, especially since the recent drastic increase in the cost of my gas by over 90 percent in April 2022!
Paul Wiffen
Mar 25, 2022
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Had a new large domestic heating system installed. Good experience all round. The team were on time each day and always put in a full days work. Went the extra mile to ensure the end result was as good as it could be, including some suggested changes along the way. I would have no hesitation recommending this company.
David Carney
Mar 20, 2022
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My parents ageing boiler had been playing and finally gave up the ghost. Called Allstar and spoke to will who was there within 3 hours. Took the time to show me the issues and gave me a number of options. We decided to go for a new boiler and this included filters, powerflush, vertical flue and new controller with thermostat. All work was done to an exceptional standard and within a day. My parents are really happy with it and more importantly they were very comfortable with having the three Allstar guys in their home. They were professional, polite and patient when handing over the system. Also very happy to take a call to explain the system to me so that I can get them working again when the inevitable "user error" crops up! Highly recommended.
Anita Opperman
Mar 15, 2020
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Will and his team were totally professional in all that they did.
Worked solidly for 2 weeks to complete all of our works, including some late nights.
Will shared his great knowledge and advised us with patience and total understanding of our needs.
Work completed to a very high standard and all emails and phone calls answered promptly.
Nothing was too much trouble for this highly recommended team.
Will definitely call on these guys again for all our plumbing and heating needs.
Thank you so much Will, Ash, Banki and Luke for all of your hard work; its really appreciated.
Worked solidly for 2 weeks to complete all of our works, including some late nights.
Will shared his great knowledge and advised us with patience and total understanding of our needs.
Work completed to a very high standard and all emails and phone calls answered promptly.
Nothing was too much trouble for this highly recommended team.
Will definitely call on these guys again for all our plumbing and heating needs.
Thank you so much Will, Ash, Banki and Luke for all of your hard work; its really appreciated.