Endorsed by Which?

Allstar Systems (Norwich) LTD

5.0

117 Reviews

Opening Hours
Today - 24 hours
  • Monday - 24 hours
  • Tuesday - 24 hours
  • Wednesday - 24 hours
  • Thursday - 24 hours
  • Friday - 24 hours
  • Saturday - 24 hours
  • Sunday - 24 hours

Organisations and Awards

Aug 2019

About

Established in 2011, Allstar Systems is a trusted plumbing, heating, and renewable energy specialist based in Norwich and serving customers across Norfolk.

We deliver high-quality boiler installations, servicing, repairs, central heating upgrades, hot water systems, bathrooms, plumbing services, and renewable heating solutions for domestic and commercial clients.

Our experienced engineers take pride in providing honest advice, reliable workmanship, and exceptional customer service. Every project receives careful planning and attention to detail, ensuring efficient, long-lasting results.

We are proud to hold industry-leading accreditations, including Gas Safe, OFTEC, Worcester Bosch Accredited Installer, Which? Trusted Trader, Trust Mark, Norfolk Trusted Trader, CHASElite, SafeContractor, CIPHE, and Anglian Water Approved Plumber status.

What we do

  • Plumbers

    • Emergency plumbing services
    • Unvented cylinder installation and maintenance
    • Water softener installation and maintenance
    • Appliance Installation
    • Bathroom Plumbing
    • Drainage Services
    • Heating System Installation
    • Leak Detection
    • Plumbing Fixtures
    • Water Heater Repair Services
  • Heating contractors

    • Central heating systems (installation and servicing)
    • Oil fired heating equipment
    • Automated Heating
    • Immersion Heaters
  • Boiler, central heating and gas engineers

    • Boiler installation
    • Boiler repair
    • Boiler servicing
    • Radiators and central heating
    • Gas safety testing and inspection
    • Gas cooker installation
    • Gas cooker repair
    • Gas emergencies
    • Gas fire repair and servicing
    • Immersion Heaters
    • Power flushing
    • Underfloor heating
  • More Services

    • lpg heating

Customer reviews

Why you can trust these reviews

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5.0
117 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Heating system upgrade
Customer Service
Quality
Value
We live in a 500 year old property where the heating system was not fit for purpose, was inefficient and used far more heating oil than necessary. Will came to assess the problems and quoted to resolve with a system upgrade. The professionalism and expertise of the Allstars team (Will, Ashley and Bank) was at the highest level and the job was completed on time, on budget and always with consideration to us. Just as importantly, we have the reassurance that the team will provide us with great customer service in the years to come, enabling our heating system to function at an optimum level. Our new system is a game changer and we’re delighted with the result. We have absolutely no hesitation in recommending Allstars.
Customer in Norfolk Posted on 10/09/2022 , work completed 09/09/2022
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased you trusted Allstar Systems with upgrading the heating in your 500-year-old property. Older homes can present unique challenges, so it’s great to hear the new heating system has made such a difference in efficiency and oil usage. We always aim to deliver tailored heating system upgrades that improve performance, reliability, and long-term running costs. We’re glad Will, Ashley, and Bank delivered such a high standard of workmanship. Completing the project on time and on budget, while respecting your home, is always a priority for our plumbing and heating team. It’s especially rewarding to know the new system has been a real game changer. We’ll continue to support you with ongoing boiler servicing and heating maintenance to keep everything running at its best. Thank you again for your recommendation and for choosing Allstar Systems.
Pipe cold water supply & components to unvented hot water system
Customer Service
Quality
Value
I sent out an email on the 28th September that I'd leaking pressure relief valve and had a reply the same day arranging to visit the next day. William came on the 29th carried out the repair, there were further faults on the system and an appointment was made for the 30th. Ash came on the 30th carried out the remedial work. All work was explained to me and was carried out in an efficient professional manner. Excellent service I highly recommend Allstar for any heating problems.
Mike in Norfolk Posted on 02/09/2022 , work completed 01/09/2022
The trader replied (on 24/04/2026)
Thank you for your excellent feedback. We’re really pleased we could respond quickly and help with your leaking pressure relief valve. It’s great to hear William and Ash explained the heating system faults clearly and completed the repair work efficiently. Clear advice, reliable heating repairs, and professional plumbing and heating service are always important to us. We’re also glad the follow-up remedial work was arranged promptly, so your heating system could be repaired without delay. Thank you for highly recommending Allstar Systems for heating problems, boiler repairs, and plumbing and heating support. We really appreciate your trust in our team.
Prompt, polite and efficient!
Customer Service
Quality
Value
We were really pleased with Ashley's polite and prompt service. He was able to solve the problem that we had been putting up with for a long time on the day. Everything has been left clean and tidy and would definitely call him back for a service or any other problems in the future. Thank you
Customer in Norfolk Posted on 22/04/2022 , work completed 21/04/2021
The trader replied (on 24/04/2026)
Thank you for your lovely feedback. We’re really pleased Ashley could provide such polite, prompt service and resolve the problem on the day. It’s great to hear everything was left clean and tidy. Reliable plumbing and heating repairs, clear workmanship, and respectful service are always important to us. We’re glad you would call Allstar Systems again for future boiler servicing, heating repairs, or any other plumbing and heating problems. Thank you again for choosing Allstar Systems.
Very quick response
Customer Service
Quality
Value
William came out at short notice as we needed our heating systems serviced/checked before our house sale. Came out the next day, checked the system and provided us with lots of instructions we were not aware of before his visit. He seemed very knowledgeable and would recommend
Customer in Essex Posted on 09/04/2022 , work completed 01/02/2022
The trader replied (on 24/04/2026)
Thank you for your kind feedback. We’re really pleased William could attend at short notice and help with your heating system checks ahead of your house sale. It’s great to hear the system was serviced promptly and that the advice provided was helpful. We always aim to deliver thorough boiler servicing and heating system inspections, along with clear guidance so you feel confident everything is working as it should. We’re glad William’s knowledge and professionalism stood out during the visit. Thank you for your recommendation and for choosing Allstar Systems for your boiler servicing and heating support.
Professional and reliable service
Customer Service
Quality
Value
William and his team did exactly what he said he would do when I called him. He came out to an emergency weekend call for a no-heating/no hot water crisis. He tried his best to find a temporary stop-gap solution but when that was not possible he did what he could to find and install a new boiler as quickly possible. All in a matter of days. Correspondence with him was always clear and professional. An excellent service from start to finish which I can only highly recommend.
Customer in Norfolk Posted on 04/03/2022 , work completed 12/02/2022
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased William and the team could support you during your no heating and no hot water emergency. We always aim to respond quickly to urgent boiler breakdowns and heating system failures. It’s great to hear every effort was made to find a temporary solution before moving forward with a new boiler installation. We’re glad the replacement boiler was sourced and installed within just a few days, restoring your central heating and hot water as quickly as possible. Clear communication and professional service throughout every stage are always a priority for our plumbing and heating team. Thank you for your high recommendation and for choosing Allstar Systems for your emergency boiler repair and installation.
customer solution focussed
Customer Service
Quality
Value
Can't speak highly enough of Will and his team. He switched our property from a failed borehole water supply to a new mains supply with 2 mains boost water vessels (with a new 300 metre supply pipe from the mains). This was a major project - the solution design was great, the installation was smooth and planned in and installed over a 4 week period to tie in with Anglian Water / local council timetable. We love the new, reliable high pressure we now get on showers etc. One of the most commendable aspects is that Will helped us deal with the very major challenge of putting in a temporary water supply at extremely short notice, devising a clever short-term fix and organising the resources to deliver this within a week. This bought us time to consider the options for the permanent solution which Will helped us assess and then plan / deliver. He is really client focused and gave us the feeling that he enjoyed the challenge of getting a high quality solution to a very challenging situation.
Customer in Norfolk Posted on 17/02/2022 , work completed 20/09/2021
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased you trusted Allstar Systems with such a complex water supply and plumbing project. Switching from a failed borehole to a new mains water supply is a major upgrade, so it’s great to hear the system design, planning, and installation all went smoothly. Delivering a 300 metre supply pipe and installing mains boost vessels to improve water pressure is something we take great care in, ensuring reliable performance for your home. We’re especially glad the temporary water supply solution helped at short notice. Finding practical, fast plumbing solutions during urgent situations is always a priority, giving you time to plan the right long-term fix. It’s also great to hear you’re enjoying the improved water pressure across your showers and system. High-quality plumbing installations and water system upgrades should always deliver noticeable, long-term benefits. Thank you for recognising Will’s commitment and problem-solving approach. We take pride in delivering tailored plumbing and heating solutions, even in the most challenging situations. We really appreciate your recommendation and for choosing Allstar Systems for your water supply and plumbing work.
Excellent service
Customer Service
Quality
Value
I had a tricky leak on a pump repaired if extra speedy time on a Saturday afternoon, nothing was too much trouble.I can’t recommend them enough. A+++++
(your username) Posted on 13/02/2022 , work completed 12/02/2022
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased we could attend quickly and repair the pump leak for you, especially on a Saturday afternoon. We always aim to provide fast, reliable emergency plumbing repairs, and it’s great to hear nothing was too much trouble for the team. Resolving leaks and keeping your water system running efficiently is always a priority. Thank you for your recommendation and for choosing Allstar Systems for your plumbing and heating support.
Boiler replacement
Customer Service
Quality
Value
Will and his team removed an old back boiler and replaced it with a combi. Their work was excellent from the moment they arrived. They were clean and tidy and kept us fully informed of progress. Will is a very knowledgeable tradesman and his advice he gave us at the start and throughout was first class. Highly recommend Will and his team.
Customer in Norfolk Posted on 11/02/2022 , work completed 03/02/2022
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased you’re happy with your new combi boiler installation. Removing an old back boiler and upgrading to a modern combi boiler is a great way to improve efficiency and heating performance, so it’s great to hear everything went smoothly from start to finish. We’re glad the team kept you informed throughout and maintained a clean and tidy workspace. Clear communication and high standards are always a priority on every boiler installation and heating upgrade we carry out. It’s also great to hear Will’s knowledge and advice stood out during the project. Providing honest guidance and reliable plumbing and heating solutions is at the heart of what we do. Thank you for your recommendation and for choosing Allstar Systems.
Another excellent piece of work
Customer Service
Quality
Value
Will and his team installed both a new immersion heater and boiler at my converted chapel in north Norfolk. Very rapid service, extremely helpful and professional. They know exactly what they are doing and are a pleasure to deal. I won't use anyone else now.
Customer in Norfolk Posted on 06/12/2021 , work completed 06/12/2021
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased you’re happy with your new boiler installation and immersion heater. It’s great to hear the work at your converted chapel was completed quickly and to a high standard. We always aim to deliver efficient, reliable boiler installations and hot water system upgrades, tailored to each property. We’re glad you found the team helpful, professional, and easy to deal with. Providing clear advice and high-quality plumbing and heating solutions is always a priority for us. Thank you for your loyalty and for choosing Allstar Systems—we really appreciate your support.
Professional, reliable, trustworthy
Customer Service
Quality
Value
What can I say. Honest appraisal of work required, William showed an incredible in depth knowledge of the systems and requirements. Sorted out my old heating system wonderfully (and saved me with an evening call when it broke). Cannot recommend enough, having AllStar around next year to service my now fully working boiler again. Thanks guys.
Customer in Norfolk Posted on 06/10/2021 , work completed 05/10/2021
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased William could provide an honest assessment and get your heating system working properly again. It’s great to hear the issue was resolved effectively, and that we could also help with the evening call when your boiler broke down. We always aim to deliver reliable boiler repairs and heating system fault finding, especially when urgent support is needed. We’re glad William’s knowledge and clear advice stood out. Providing trustworthy guidance and high-quality plumbing and heating solutions is at the core of what we do. We look forward to carrying out your boiler servicing next year and keeping your heating system running efficiently. Thank you again for your recommendation and for choosing Allstar Systems.