Based in Norwich, Allstar Systems Plumbing & Heating delivers professional plumbing and heating services to customers across Norfolk, serving both residential and commercial sectors. Our company is committed to safe workmanship, reliable service and long-term performance across all heating and plumbing systems we manage. We provide a comprehensive range of services designed to meet varied property needs.Our work includes supporting homeowners, landlords, businesses and commercial property managers with boiler installation, servicing and repair work, alongside emergency heating support. We also undertake central heating upgrades, power flushing, hot water system maintenance, radiator installation, underfloor heating, bathroom plumbing and general plumbing services. For commercial operations, we offer boiler servicing, boiler replacement, gas and LPG services, temporary boiler hire and planned maintenance solutions. Our engineers deliver clear advice and practical recommendations, ensuring each client receives an appropriate and effective solution.
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 engineers provide boiler installation services for homes, apartments, and commercial buildings using gas, LPG, and oil systems. Every installation begins with an assessment of the property's heating and hot water requirements. This enables us to recommend the most appropriate boiler replacement for your existing system. A modern boiler can improve efficiency, comfort, and day-to-day heating reliability. 
Our engineers provide boiler repair solutions for properties affected by heating and hot water problems. We examine each fault thoroughly to identify the source of the issue and recommend appropriate repairs. Gas, oil and LPG boilers are all covered within our service. We also assist with heating system components including radiators, controls and cylinders. Our approach is centred on delivering reliable repairs with clear and practical guidance for customers. 
At Allstar Systems, we support homeowners and businesses with professional power flushing solutions for heating systems affected by circulation problems. Sludge within the system can lead to inefficient heating, noisy boilers, and uneven temperatures across the property. We carefully inspect the system before carrying out any flushing work and recommend alternative solutions where necessary. Our engineers focus on restoring efficient and dependable heating operation throughout the property. 
We deliver comprehensive hot water system solutions designed to improve the reliability and performance of your propertys water supply. Our experienced engineers repair issues such as low pressure, heating delays, thermostat faults, and leaking cylinders. Every system is thoroughly inspected to identify the correct solution before work begins. From hot water cylinder installations to ongoing maintenance, we provide dependable support for homes requiring improved hot water systems. 
We provide complete underfloor heating support, from initial assessments through to installation, repairs, and system upgrades. Our team works with electric and wet underfloor heating systems for bathrooms, kitchens, extensions, and open-plan areas. We also resolve issues such as uneven temperatures, thermostat faults, and poor heating response. Careful system design and planning help ensure dependable heating performance throughout the property. 
Our team delivers urgent plumbing repairs for residential and commercial customers requiring immediate assistance. We respond rapidly to plumbing emergencies to help limit damage caused by faults and leaks. From broken pipes to unexpected water issues, we provide dependable repair services around the clock. Clients continue to trust us for our skilled workmanship and professional plumbing support. 
At Allstar Systems, we provide luxury bathroom installations for clients seeking quality, reliability, and exceptional finishes. We undertake projects ranging from compact cloakrooms to spacious spa-style bathrooms with bespoke features. Every installation is carefully planned to ensure efficient plumbing performance and a cohesive design. Our focus remains on delivering bathrooms that are both elegant and durable. 
We undertake commercial boiler servicing with a focus on safety, efficiency and long-term heating reliability for commercial premises. Every service includes a detailed inspection of the boiler and heating system to identify areas requiring maintenance or further attention. Supporting commercial gas, LPG and oil boilers, we help clients maintain operational performance and improve confidence in the condition of their heating systems. 
Our commercial gas and LPG services are intended for businesses needing reliable support with installations, gas pipework, safety inspections, and testing procedures. We recognise the importance of maintaining safe and compliant environments during commercial works. For that reason, each project is carefully planned and reviewed before commencement. We deliver structured solutions suited to the operational requirements of the site.
Reviews (30)
Anya Hayward-Brown
Mar 06, 2026
Rob Dunderdale
Mar 03, 2026
Jon Frith
Jan 26, 2026
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.
Sarah Lewins
Jul 25, 2025
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
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!
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
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
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!
Jeanette Stokes
Jan 23, 2025
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!
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
Justine Hobbs
Oct 12, 2024
Saretta By The Sea
Sep 28, 2024
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
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.
Brett M.
Mar 10, 2024
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.
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.
Sebastian Slomkowski
Jan 31, 2024
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
Stephen Holt
Nov 04, 2023
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.
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.
Vicky McKenzie
Sep 30, 2022
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.
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.
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
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.
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
Paul Wiffen
Mar 25, 2022
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
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