Allstar Systems Plumbing & Heating is a professional plumbing and heating company based in Norwich, serving domestic and commercial customers across Norfolk. The business provides a wide range of heating, boiler, plumbing and system maintenance services, with a strong focus on safe workmanship, reliable service and long-term performance.
The company supports homeowners, landlords, businesses and commercial property managers with boiler installation, boiler servicing, boiler repairs, emergency heating support, central heating upgrades, power flushing, hot water systems, radiator work, underfloor heating, bathroom plumbing and wider plumbing maintenance. In addition, Allstar Systems works across commercial heating systems, including commercial boiler servicing, commercial boiler replacement, gas and LPG services, temporary boiler hire and planned maintenance.
Allstar Systems is known for combining practical experience with professional standards. Its engineers help customers choose the right solution for each property, whether that means repairing an existing boiler, improving heating efficiency, replacing an old system, or maintaining essential commercial plant rooms. Moreover, the team gives clear advice, explains options in plain language and focuses on dependable results rather than quick fixes.
The business works with respected heating brands and supports efficient, modern heating systems for homes and businesses. Its services help improve comfort, reduce breakdown risks, maintain safety, and keep heating and hot water systems running smoothly throughout the year. Therefore, customers can rely on Allstar Systems for both routine care and urgent support.
As a local Norwich company, Allstar Systems places strong value on trust, responsiveness and customer care. The team understands the needs of Norfolk properties, from family homes and rental properties to offices, schools, hospitality buildings and larger commercial sites. Through qualified engineers, careful diagnostics and high service standards, Allstar Systems provides plumbing and heating support that customers can depend on.
The company supports homeowners, landlords, businesses and commercial property managers with boiler installation, boiler servicing, boiler repairs, emergency heating support, central heating upgrades, power flushing, hot water systems, radiator work, underfloor heating, bathroom plumbing and wider plumbing maintenance. In addition, Allstar Systems works across commercial heating systems, including commercial boiler servicing, commercial boiler replacement, gas and LPG services, temporary boiler hire and planned maintenance.
Allstar Systems is known for combining practical experience with professional standards. Its engineers help customers choose the right solution for each property, whether that means repairing an existing boiler, improving heating efficiency, replacing an old system, or maintaining essential commercial plant rooms. Moreover, the team gives clear advice, explains options in plain language and focuses on dependable results rather than quick fixes.
The business works with respected heating brands and supports efficient, modern heating systems for homes and businesses. Its services help improve comfort, reduce breakdown risks, maintain safety, and keep heating and hot water systems running smoothly throughout the year. Therefore, customers can rely on Allstar Systems for both routine care and urgent support.
As a local Norwich company, Allstar Systems places strong value on trust, responsiveness and customer care. The team understands the needs of Norfolk properties, from family homes and rental properties to offices, schools, hospitality buildings and larger commercial sites. Through qualified engineers, careful diagnostics and high service standards, Allstar Systems provides plumbing and heating support that customers can depend on.
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
We offer reliable boiler replacement and installation services for residential and commercial properties. Our team installs gas, LPG, and oil boilers based on the specific demands of your heating and hot water system. Every property is carefully assessed to identify the most suitable boiler option. Replacing an outdated boiler can improve efficiency, comfort, and overall heating performance. 
We provide comprehensive boiler repair support for domestic and commercial heating systems. Our engineers investigate each fault carefully to understand the cause before suggesting repairs. We work with gas, oil and LPG boilers across a range of makes and models. Problems such as boiler lockouts, leaks and poor heating circulation are handled professionally. Our objective is to restore heating and hot water with safe and effective repair solutions. 
We carry out comprehensive power flushing services designed to restore heating systems suffering from poor circulation and sludge accumulation. Before beginning any work, we inspect the system thoroughly to confirm that power flushing is appropriate. Our service helps address uneven heating, cold spots in radiators, and excessive boiler noise. We work with both domestic and commercial systems while maintaining recognised industry standards throughout every project. 
We provide expert hot water system repairs, installations, and upgrades for homes experiencing unreliable water heating performance. Our engineers deal with faults including leaking cylinders, failing immersion heaters, expansion vessel problems, and inconsistent hot water supply. Every property is assessed carefully to determine the most suitable solution. By combining professional workmanship with thorough inspections, we ensure your hot water system operates efficiently and reliably. 
We install and maintain underfloor heating systems designed to deliver efficient and consistent warmth throughout your property. Whether you require electric heating mats for smaller rooms or wet systems for open-plan spaces, we provide solutions suited to your needs. Our engineers also diagnose faults, repair underperforming systems, and improve heating controls where necessary. Every installation is planned carefully to support long-term reliability. 
We provide fast emergency plumbing repairs for residential and commercial properties experiencing urgent faults. Quick response times enable us to reduce the damage often caused by leaks, burst pipes, and related plumbing problems. Our experienced team carries out reliable repair work with professionalism and care. Customers choose us because of our trusted service, expert workmanship, and dependable support. 
At Allstar Systems, we install luxury bathrooms that combine sophisticated design with dependable functionality. Our team works on bespoke bathrooms, cloakrooms, wet rooms, and walk-in shower spaces using carefully selected fittings and materials. Every stage of the installation is professionally managed to ensure quality results. We take pride in delivering bathrooms that are durable, practical, and visually refined. 
Our engineers deliver commercial boiler servicing for a range of commercial environments requiring dependable and efficient heating systems. We assess the boiler, inspect associated heating components and identify any maintenance concerns during each visit. By servicing gas, LPG and oil systems, we support the safe operation of commercial heating equipment while helping extend the working life of the boiler plant. 
We support commercial properties with professional gas and LPG services, including installations, safety inspections, testing, and pipework projects. Our experience covers schools, offices, healthcare settings, retail units, and industrial environments. Every project is reviewed in advance to identify site requirements and safety considerations. This structured approach allows us to deliver reliable support while maintaining safe working conditions throughout the process.
Reviews (30)
William Stovell
Apr 13, 2026
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I contacted Allstar for a quote to repalace 3 radiators. Will replied and quickly arrived to size up the job. He was polite, prompt and professional. The quote was good value. Will turned up promptly, with his team, and immediately began work. The quality of work was first class and caused minimal bother to our normal routine. I highly reccomend Allstar to anyone.
After a few months, we approached Allstar again for a heating system update, involving a boiler change and system update. We received great service. The team were punctual, polite, professional and took a great deal of pride in their work. We opted for an external boiler, which involved a good deal of pipe renewal. Despite miserable weather, they ensured that everything was to the highest standard and no corners were cut. Will made sure the system operated safely and correctly and I understood how to program the system and could spot any faults. Will, Ash, Bank and Geordie did an excellent job. They cleared up after themselves and we now have a beautiful new system. Many thanks to all.
After a few months, we approached Allstar again for a heating system update, involving a boiler change and system update. We received great service. The team were punctual, polite, professional and took a great deal of pride in their work. We opted for an external boiler, which involved a good deal of pipe renewal. Despite miserable weather, they ensured that everything was to the highest standard and no corners were cut. Will made sure the system operated safely and correctly and I understood how to program the system and could spot any faults. Will, Ash, Bank and Geordie did an excellent job. They cleared up after themselves and we now have a beautiful new system. Many thanks to all.
Jonny Benton
Nov 26, 2025
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James Wall
Sep 15, 2025
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I cannot recommend the services of the team enough. Will and Ash are extremely knowledgable, friendly and approachable. Clearly committed to their crafts the team responded quickly to our needs and were extremely pleased with the results. Having only fairly recently moved to the area, its great to have found our go to team for all things heating and plumbing. Will be using them for future projects and any issues without question.
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.
Rhi
May 24, 2025
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Couldn't be happier with William and Ashley at Allstar. Booked in very quickly and easily when boiler had an issue, then easily enough for repairs and servicing a few weeks later. The team were flexible enough to bring the apt forward a week and diligently replaced the parts as originally recommended and provided our yearly service. Very responsive to calls and emails.
Ashley was very professional, friendly, kindly showing and explaining some parts to me and what it could mean/need. Will be booking in with them again for any further issues and servicing needs.
Thanks guys!
Ashley was very professional, friendly, kindly showing and explaining some parts to me and what it could mean/need. Will be booking in with them again for any further issues and servicing needs.
Thanks guys!
Craig Brown
Apr 22, 2025
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Had a major problem with our hot water system that William sorted and replaced in a very timely manner. Keeping us in the loop on time scales for replacement parts along with how the work schedule would be completed. Being without hot water over the Christmas period seemed like a real possibility but Allstar made sure we were sorted professionally and promptly.
Installation looks a big improvement on the old system as well - first rate service all round.
Installation looks a big improvement on the old system as well - first rate service all round.
Sarah Cassells
Mar 22, 2025
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Our boiler died during a freezing February week and after being messed around by an emergency engineer, William was an absolute hero. Within two days of contacting him our new boiler was in and heating our radiators and hot water more efficiently than ever. I have never encountered a heating engineer who is so friendly and professional and cannot recommend him highly enough.
Jeanette Stokes
Jan 23, 2025
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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.
Chris Burdett
Nov 18, 2024
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Derek Selden
Oct 24, 2024
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Two weeks before Christmas and our unvented mains hot water tank died.
Allstar visited within a couple of days and not only deemed it terminal but that it had been installed incorrectly, illegally, by the original plumber.
Within a week they had sourced a new tank and installed in line with the building regulations.
One cannot ask for better service than that.
If you want, or have got an unvented mains hot water tank, ("Megaflow"), these are your guys. They have the essential additional qualifications over and above the usual "Gas Safe" one.
Allstar visited within a couple of days and not only deemed it terminal but that it had been installed incorrectly, illegally, by the original plumber.
Within a week they had sourced a new tank and installed in line with the building regulations.
One cannot ask for better service than that.
If you want, or have got an unvented mains hot water tank, ("Megaflow"), these are your guys. They have the essential additional qualifications over and above the usual "Gas Safe" one.
Justine Hobbs
Oct 12, 2024
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Saretta By The Sea
Sep 28, 2024
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Really impressed and reassured by Allstar Systems (Norwich) LTD.
We had a dangerous issue with our oil fired boiled and William came out as an emergency. He ensured the safety of our tenants and had a new boiler installed ASAP with no disruption to our guests. He also talked us through some basic procedures and was very quick to get back to us when needed.
Very reliable and have recommended to other landlords who prioritise safety.
Hopefully we won't need them to attend again. But if we do we know we'll be in safe hands.
Thank you!
We had a dangerous issue with our oil fired boiled and William came out as an emergency. He ensured the safety of our tenants and had a new boiler installed ASAP with no disruption to our guests. He also talked us through some basic procedures and was very quick to get back to us when needed.
Very reliable and have recommended to other landlords who prioritise safety.
Hopefully we won't need them to attend again. But if we do we know we'll be in safe hands.
Thank you!
Jason Hudson
Sep 12, 2024
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Having brought a house with a boiler that was extremely old and not working - Allstar was very quick to get back to me with a quote and when they can install. I was extremely happy that they could install a couple of days later as I didnt have hot water and heating. They turned up on time arranged and rapidly swapped my boiler over so I had heating and hot water. Would highly recommended.
Sue Cheng
Mar 11, 2024
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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
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
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.
John Smith
Feb 15, 2024
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William and his team once again provided professional, excellent service, replacing my water feed tank system with an unvented cylinder together with a water softener at the mains inlet. His in-depth knowledge inspires confidence. Communication and reliability are first rate. I recommend this company without any reservations.
Tara Lemay
Nov 08, 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
John LeMay, Merryfield services
Richard Pettit
Oct 11, 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
Vanessa Sinclair
Sep 22, 2023
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I had a 6 year old thermal store cylinder which failed and flooded my kitchen and dining room. I contacted Allstar Systems and William came round the same evening to discuss options. I now have an efficient unvented hot water system along side a fully pumped sealed s-plan heating system with the cylinder relocated next to the boiler. New pipe work was required due to the relocation of the cylinder which left very little visible disruption. The installation was dealt with promptly and efficiently. I was kept informed of all changes. Im extremely pleased with the result and would not hesitate in using the company again or recommending them.
Laura Parry
Mar 26, 2023
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David Goodman
Mar 10, 2023
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Darren Morrow
Dec 19, 2022
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My oldish combi boiler broke during the recent cold spell. Will attended out-of-hours on the day that I called him. He swiftly diagnosed the problem and discussed in detail the options of an attempted repair or a new boiler. I was given ample time and information to make my decision. I chose the latter and it was installed and working within a week. Will is courteous, respectful, responsive and knowledgeable. The work was completed to a very high standard and my house was left clean and tidy. I am very happy to highly recommend Allstar Systems.
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.
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.
Peter Webber
Sep 19, 2022
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Contacted Allstar Systems with a problem in a tenanted property. The tenant was complaining of a loud 'foghorn' type of noise when running the hot water system.
Will responded to my call immediately and promptly attended the property, identifying the problem as a faulty ball valve which was then replaced.
From beginning to end, Will was efficient, polite and professional. I would thoroughly recommend using Allstar Systems again.
Barbara Lock and Peter Webber
Will responded to my call immediately and promptly attended the property, identifying the problem as a faulty ball valve which was then replaced.
From beginning to end, Will was efficient, polite and professional. I would thoroughly recommend using Allstar Systems again.
Barbara Lock and Peter Webber
Hicks
Apr 25, 2022
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Will has been an absolute gem and a pleasure to have replace my broken down boiler, add an additional emergency hot water system and to replace the previously incorrectly installed shower.
Will and his team are trustworthy, professional and completely transparent when it comes to what's wrong, and provides different options to accommodate your budget as best as he can.
I would recommend All-star to everyone and I wouldn't use anyone else. Cheers Will
Will and his team are trustworthy, professional and completely transparent when it comes to what's wrong, and provides different options to accommodate your budget as best as he can.
I would recommend All-star to everyone and I wouldn't use anyone else. Cheers Will
D. Mb
Apr 03, 2022
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Will and Allstar Systems give exceptional service and expertise. Allstars offers a properly premium service, who are completely professional, and clearly pride themselves in their quality of work and tidiness. If you want someone who responds promptly, is honest, knowledgeable to another level and carries out exceptional work; honestly look no further.
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.
Abbie
Mar 30, 2021
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I would 100% recommend this company for all of your plumbing needs! We have used them on a couple of occasions and most recently they really did save the day (we had a boiler leak on NYs Day!!) Ashley could not have been more helpful and responded instantly despite it being a bank holiday. Allstar Systems are reliable and are incredibly reasonably priced. Ashley took safety very seriously which was very reassuring during the pandemic. 5 stars from me, I couldnt recommend enough!!