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From our base in Norwich, Allstar Systems Plumbing & Heating offers professional plumbing and heating services across Norfolk for both domestic and commercial sectors. Our company is dedicated to delivering safe, reliable and long-lasting solutions across all heating, boiler and plumbing works. We emphasise quality workmanship and consistent service standards in every project undertaken.

We work with homeowners, landlords, businesses and commercial property managers, providing boiler installation, servicing and repair services, as well as emergency heating assistance. Our expertise also includes central heating upgrades, power flushing, hot water system servicing, radiator installation, underfloor heating solutions, bathroom plumbing and ongoing maintenance. For commercial clients, we deliver boiler servicing, boiler replacement, gas and LPG services, temporary boiler hire and planned maintenance. Our engineers combine technical knowledge with clear communication, ensuring customers are fully informed and confident in the solutions provided.

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
Business 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
Boiler Installation We install replacement boilers for properties experiencing poor heating performance or ongoing boiler issues. Our engineers work with gas, oil, and LPG systems and assess your current setup before advising on a suitable replacement. Upgrading your boiler can improve efficiency and hot water performance throughout the property. We provide clear and practical guidance during the installation process.
Boiler Repair Allstar Systems delivers boiler repair services for customers dealing with heating and hot water interruptions. Our engineers diagnose faults professionally to ensure the correct repair approach is recommended. We repair gas, oil and LPG boilers in both domestic and commercial properties. Heating system concerns involving radiators, circulation or controls can also be assessed by our team. We work to restore boiler function efficiently while providing straightforward and reliable guidance.
Power Flushing At Allstar Systems, we carry out power flushing services to remove sludge and debris from heating systems with circulation problems. We assess the heating system in advance to determine whether flushing is suitable or if alternative work is required. Common signs include noisy boilers, poor heat output, and radiators heating unevenly. Our engineers focus on restoring cleaner circulation and improving the overall efficiency of the system.
Hot Water Systems We offer complete hot water system services for properties experiencing problems with heating performance or water supply reliability. Our engineers repair faults such as leaking cylinders, fluctuating temperatures, faulty controls, and low pressure systems. Every installation or repair begins with a full assessment of your propertys hot water requirements. We aim to provide durable solutions that improve overall system performance and efficiency.
Underfloor Heating Our engineers provide underfloor heating services that are planned around the needs of your property and heating system. We install electric underfloor heating for smaller areas and wet systems for larger spaces requiring steady heat distribution. Alongside installations, we repair faults, improve controls, and upgrade outdated systems. Every underfloor heating project is assessed thoroughly to ensure reliable and efficient operation.
Emergency Plumbing We specialise in emergency plumbing repairs for properties experiencing urgent plumbing faults. Quick response times allow us to reduce the impact of leaks, burst pipes, and related issues. Our service is available for both domestic and commercial plumbing requirements. Customers choose our company because we provide reliable repairs, professional advice, and consistently high standards of workmanship.
Bathroom Installation We create luxury bathrooms that are carefully designed to suit both contemporary and traditional properties. Our services include en suites, cloakrooms, wet rooms, and walk-in shower installations using premium fittings and materials. Attention is given to every stage of the installation, from plumbing performance to the final finishing details. Each project is completed with professionalism and precision.
Commercial Boiler Servicing Our commercial boiler servicing is intended to help commercial premises maintain safe, efficient and dependable heating systems throughout the year. We carry out detailed inspections of boilers and associated heating equipment, identifying maintenance requirements and operational concerns. We service gas, LPG and oil commercial boilers for buildings such as schools, offices, hotels and healthcare facilities requiring reliable heating performance.
Commercial Gas Services We carry out commercial gas and LPG projects for a variety of commercial properties, including healthcare facilities, retail spaces, and shared commercial sites. Services include commercial gas installations, testing, purging, inspections, and pipework works. Every project begins with a detailed site assessment to identify the safest and most effective route forward. We remain focused on compliance and communication throughout the process.
Reviews (30)
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William Stovell
Apr 13, 2026
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.
Rob Dunderdale
Mar 03, 2026
William was brilliant, soon got us booked in and when he came, he thoroughly explained how our boiler worked (we had just moved in) and carried out its yearly service.
Marcus Brooks
Feb 05, 2026
Excellent service provided by William
I'm very thankful for him to be able to fix my heating at such a quick response
Highly recommended and excellent and thorough service
5 stars all the way
William Wilson
Sep 25, 2025
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.
Andrew Cox
May 28, 2025
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
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!
Sarah Cassells
Mar 22, 2025
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.
Annie Naylor-Clements
Jan 31, 2025
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.
Jenny Mollan
Jan 14, 2025
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!
Brenda Kallend
Nov 28, 2024
We have just recently had a new gas boiler installed by William Smith and his team from Allstar Systems. who have given us excellent service. We are delighted to have a warm house again. We will see them in 12 months time for an annual service.
Hero Chalmers
Nov 25, 2024
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
Prompt service from a professional team who ensured that our hot water system was properly configured as well as providing the power flush quoted for. Heating and hot water now performing better than they have in years!
Derek Selden
Oct 24, 2024
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.
Justine Hobbs
Oct 12, 2024
Really great service, very efficient and prompt, very happy with our new radiator and all other jobs such as removal of old gas heater and the plumbing that was sorted in the kitchen is fab. Would highly recommend. Thanks for the great work!
Brett M.
Mar 10, 2024
Allstar have done a boiler installation for us and a few boiler services. They've always been on time, polite and take the time to explain what's going on. Happy to recommend.
Jo Barker
Feb 28, 2024
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.
John Smith
Feb 15, 2024
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
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
Stephen Holt
Nov 04, 2023
Allstar has just finished a major overhaul of our complex heating system. They have done a superb job and are really nice people to work with and have in your home. Friendly Norfolk family company who I cant recommend more highly.
Richard Pettit
Oct 11, 2023
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
Dariush Fassihi
May 07, 2023
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!
David Goodman
Mar 10, 2023
We had a burst pipe in our central heating system. Will from Allstars came out late at night and at short notice. The service was professional, timely and top notch. Thank you Will and the team.
Darren Morrow
Dec 19, 2022
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.
Aimee Leggoe
Nov 25, 2022
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.
Ian Ward
Sep 24, 2022
Will and the team changed out our complete heating system from an older less efficient oil boiler and water tank system for an energy efficient Bosch combo oil boiler, whilst removing our loft installed water tanks. All completed over two long days and we now have an energy saving pressurised system. We had a full flush before commissioning. An excellent all round system and a perfect installation. I will be back in touch to get both bathrooms updated next year, 2023. Cheers Allstar heating and plumbing.
Anna Pank
Sep 11, 2022
I cant recommend Will and his team enough. Our heating broke on the Sunday and Will responded straight away and came on Monday. We ended up needing a new boiler and Will worked the following weekend to get it sorted knowing we had a baby. He explained everything and was friendly and always punctual. I wont ever use anyone one else for repairs.
Francis Reed
Apr 19, 2022
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!
Colette Hollands
Jan 09, 2022
Called Allstar for an emergency when our boiler wouldn't fire up. Will got the boiler up and running again but, we knew it was on it's last legs. Will and his team had a new boiler within 2 weeks, ordered and fitted, with new thermostat valves. And to the exact price that was originally quoted. Would definitely recommend and we will be using Allstar Systems for our annual servicing going forward.
Abbie
Mar 30, 2021
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!!
Susie Jones
Mar 15, 2020
Would highly recommend to anyone. Helped me out over the phone about my boiler leaking water on a Saturday evening! Came out the following week and fitted a new boiler for me. Very hard-working and knowledgeable.