Operating from Norwich, Allstar Systems Plumbing & Heating provides specialist plumbing and heating services to residential and commercial clients throughout Norfolk. Our business is founded on principles of safety, reliability and long-term operational performance, ensuring every project is completed to a consistently high standard. We deliver a wide range of heating, boiler and plumbing solutions tailored to individual property requirements.
Our services extend to homeowners, landlords, commercial organisations and property managers, covering boiler installation, servicing and repair work alongside emergency heating assistance. We also provide central heating system upgrades, power flushing, hot water system maintenance, radiator services, underfloor heating installation, bathroom plumbing and general maintenance. Commercial clients benefit from boiler servicing and replacement, gas and LPG services, temporary boiler hire and planned maintenance support. Our engineers provide practical guidance, helping clients select appropriate solutions and ensuring that all work is carried out with clarity, professionalism and attention to detail.
Our services extend to homeowners, landlords, commercial organisations and property managers, covering boiler installation, servicing and repair work alongside emergency heating assistance. We also provide central heating system upgrades, power flushing, hot water system maintenance, radiator services, underfloor heating installation, bathroom plumbing and general maintenance. Commercial clients benefit from boiler servicing and replacement, gas and LPG services, temporary boiler hire and planned maintenance support. Our engineers provide practical guidance, helping clients select appropriate solutions and ensuring that all work is carried out with clarity, professionalism and attention to detail.
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 supports homeowners and businesses seeking dependable heating solutions. We install gas, oil, and LPG boilers after carefully reviewing your property's existing heating system and requirements. This assessment helps us recommend an appropriate replacement with confidence. Modern boilers can improve energy efficiency while delivering more effective heating and hot water performance. 
Our boiler repair service helps customers resolve a variety of heating and hot water faults quickly and professionally. We assess the boiler and heating system thoroughly before advising on suitable repairs. Gas, oil and LPG boilers are all included within our area of expertise. We also assist with related issues involving radiators, controls and domestic hot water systems. We aim to restore dependable heating performance with minimal inconvenience. 
Our power flushing service is intended to improve heating efficiency by removing sludge, rust, and debris from the system. We assess all components before starting work to ensure the heating system is suitable for flushing. Whether the issue involves cold radiators, dirty water, or reduced heat output, we provide a professional solution tailored to the property. We aim to restore reliable circulation and improve overall heating performance. 
At Allstar Systems, we provide tailored hot water system services for properties affected by unreliable or inefficient water heating. Our engineers repair faults involving thermostats, cylinders, immersion heaters, and pressure-related issues. We also install replacement systems designed to meet the specific hot water demands of the household. Every service is completed with careful attention to long-term system performance and operational reliability. 
We deliver professional underfloor heating services tailored to the specific needs of each property. Whether you require electric systems for smaller spaces or wet underfloor heating for larger areas, we ensure every installation is carefully planned. Our team also carries out repairs, upgrades, and system balancing to improve heating performance. Every project is assessed thoroughly to ensure compatibility with your flooring and heating arrangement. 
When urgent plumbing problems occur, we provide a prompt and professional repair service for homes and businesses. Our experienced team works quickly to minimise damage and restore plumbing systems efficiently. We regularly assist with burst pipes, leaks, and other emergency plumbing faults. Clients appreciate our dependable response, quality workmanship, and trusted reputation within the local community. 
We design and install high-quality bathrooms that balance refined aesthetics with practical performance. From bespoke en suites to fully tanked wet rooms, every installation is completed using reliable plumbing systems and premium materials. Our experienced tradespeople ensure all elements work seamlessly together. Each bathroom is tailored to complement the property and the homeowners requirements. 
Our commercial boiler servicing is focused on maintaining safe and efficient heating performance for commercial properties with demanding operational requirements. We inspect boilers thoroughly, review system condition and provide guidance on ongoing maintenance needs. Whether your premises operate gas, LPG or oil systems, we offer servicing solutions that help maintain reliability, improve efficiency and support continued heating performance throughout the building. 
Our team provides commercial gas and LPG services tailored to the operational needs of commercial premises. We undertake installations, gas testing and purging, safety inspections, and pipework support across multiple sectors. Detailed planning and risk assessment procedures are completed before works begin. By maintaining strong health and safety standards, we help commercial clients manage projects with greater confidence and continuity.
Reviews (30)
Anya Hayward-Brown
Mar 06, 2026
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Rob Dunderdale
Mar 03, 2026
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Marcus Brooks
Feb 05, 2026
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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.
William Wilson
Sep 25, 2025
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Will and Ash did a great job. Will arrived very quickly and pointed out several safety critical elements that hadn't been noticed by previous plumbers, he then prioritised sorting it. We really appreciated their skill in considering the whole heating and hot water system (not just one element). We now have a safe and working boiler, underfloor heating and hot water system and would recommend Allstar to anyone.
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.
Arthur
May 19, 2025
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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.
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!
Karl Blenk
Mar 15, 2025
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Parvathy Mnair
Mar 11, 2025
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Last year we had an issue with our boiler, Installers couldn't sort it out and was costing too much money with the the repairs. That's when we found Allstar systems, and our boiler never had any issue since last year,. We have booked for the annual service again this year and the service was again much satisfying. Would definitely recommend to everyone.. Thank you Allstar
Jeanette Stokes
Jan 23, 2025
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Brenda Kallend
Nov 28, 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.
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!
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.
Alison Toon
Mar 04, 2024
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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.
Sebastian Slomkowski
Jan 31, 2024
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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
Stephen Holt
Nov 04, 2023
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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
Laura Parry
Mar 26, 2023
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David Goodman
Mar 10, 2023
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Ben Ogley
Feb 24, 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.
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.
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
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.