Allstar Systems Plumbing & Heating operates as a professional plumbing and heating provider located in Norwich, delivering services to both domestic and commercial clients throughout Norfolk. The company is committed to delivering safe workmanship, dependable service and long-term system performance across all heating, boiler and plumbing requirements. Its approach is centred on professionalism and consistency, ensuring that each customer receives a reliable and effective solution tailored to their property.We provide comprehensive support to homeowners, landlords, businesses and commercial property managers. Our services include boiler installation, servicing and repairs, emergency heating assistance, central heating upgrades, power flushing, hot water system maintenance, radiator works, underfloor heating solutions, bathroom plumbing and general plumbing upkeep. In the commercial sector, we also undertake boiler servicing and replacement, gas and LPG work, temporary boiler hire and planned maintenance programmes. Our engineers focus on practical, efficient solutions, offering clear explanations and professional guidance. We prioritise informed decision-making, whether repairing, upgrading or maintaining heating systems, ensuring dependable outcomes across all projects we undertake.
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
Our boiler installation and replacement service is available for a range of residential and commercial properties. We fit gas, oil, and LPG boilers and ensure every recommendation is based on a careful evaluation of the current heating system. Replacing an inefficient boiler can improve reliability and energy performance. We aim to provide practical solutions suited to your property's requirements. 
At Allstar Systems, we provide professional boiler repair services for domestic and commercial properties. Our engineers diagnose faults carefully before recommending the most suitable repair solution. We work with gas, oil and LPG boilers across a wide range of makes and models. Our team also assists with heating system issues affecting radiators, cylinders and hot water performance. We aim to restore reliable heating and hot water as quickly as possible. 
Our experienced engineers provide power flushing services for heating systems experiencing poor efficiency and circulation issues. Sludge accumulation can result in slow warm-up times, noisy operation, and radiators remaining cold in certain areas. We assess the condition of the entire heating system before recommending any work to ensure suitability. The flushing process is designed to improve circulation and support the reliable performance of boilers and radiators alike. 
At Allstar Systems, we provide professional hot water system services for domestic properties requiring reliable and efficient hot water performance. Our engineers handle faults including poor pressure, leaking cylinders, faulty immersion heaters, and inconsistent temperatures. We carefully assess every property before recommending repairs or upgrades. Whether you require installation, replacement, or maintenance, we ensure your system is suited to your household demand. 
At Allstar Systems, we provide underfloor heating solutions designed to deliver dependable warmth, efficient energy use, and straightforward controls. We install and repair both electric and wet underfloor heating systems to suit different property requirements. Our engineers carefully assess your flooring and heating needs before recommending the most suitable option. We also offer retrofit systems, upgrades, and ongoing support to help maintain reliable performance. 
Our emergency plumbing repairs are carried out promptly to address urgent problems before they worsen. We assist both homeowners and commercial clients with leaks, burst pipes, and other unexpected plumbing faults. By responding quickly, we help limit damage and restore systems efficiently. Customers value our professional approach, dependable repairs, and the high standard of workmanship we consistently provide. 
We provide complete bathroom installation services using premium products and skilled workmanship throughout. From feature shower rooms to elegant en suites, every installation is designed around the available space and practical requirements of the property. We focus on ensuring all plumbing systems and fixtures operate efficiently over time. Each bathroom is finished to a consistently high standard. 
We provide structured commercial boiler servicing for buildings where reliable heating and hot water are essential to daily operation. Each service visit includes inspections of the boiler and wider heating system, together with safety assessments and maintenance recommendations. Our engineers work with gas, LPG and oil commercial boilers, helping clients improve efficiency, maintain safe performance and reduce the risk of system failure. 
We support commercial clients with professional gas and LPG services covering installations, inspections, testing, and purging requirements. Our work is carried out across offices, schools, hospitality venues, industrial premises, and healthcare environments. Every project is managed with careful preparation and attention to site safety. We also communicate clearly throughout the process to support efficient and organised project delivery.
Reviews (30)
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.
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.
Marcus Brooks
Feb 05, 2026
Jon Frith
Jan 26, 2026
Jonny Benton
Nov 26, 2025
James Wall
Sep 15, 2025
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.
Nathan Gull
Jun 16, 2025
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
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
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!
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.
Karl Blenk
Mar 15, 2025
Parvathy Mnair
Mar 11, 2025
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
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.
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!
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!
Chris Burdett
Nov 18, 2024
Trudi N.
Sep 14, 2024
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.
Sue Cheng
Mar 11, 2024
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
Alison Toon
Mar 04, 2024
Philip Moxon
Mar 03, 2024
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.
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
John LeMay, Merryfield services
Vanessa Sinclair
Sep 22, 2023
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.
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.
Anshuman Mondal
Nov 09, 2022
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.
Peter Webber
Sep 19, 2022
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
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
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!
D. Mb
Apr 03, 2022
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.
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!!
Anita Opperman
Mar 15, 2020
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.
Susie Jones
Mar 15, 2020