Endorsed by Which?

Allstar Systems (Norwich) LTD

5.0

116 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

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5.0
116 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Replaced our boiler and cylinder
Customer Service
Quality
Value
Called on the 7th, they came round the same day. We had no heating or hot water, so he assessed it and said would be able to replace the boiler that week. Got a quote later that night, and agrred the next day. Work then started on the 9th, 4 workman were round all day to priotise the hot water. Returned on the 11th to finish up and was all completed. Everythign was clean, everything was expalined. they were super effiecent and know what they were doing.
Which? Trusted Traders Consumer Posted on 11/10/2019 , work completed 11/10/2019
The trader replied (on 24/04/2026)
Thank you for your great feedback. We’re really pleased we could help so quickly when you were left without heating and hot water. It’s great to hear the team attended the same day, assessed the issue, and arranged a prompt boiler replacement within the week. When heating systems fail, especially in winter, we always aim to prioritise restoring hot water and central heating as quickly as possible. We’re glad the installation was completed efficiently over the two visits and that everything was left clean and clearly explained. Providing clear communication, reliable boiler installation, and professional plumbing and heating service is always a priority for our team. Thank you for your recommendation and for choosing Allstar Systems for your emergency boiler replacement and heating system support.
First annual service...
Customer Service
Quality
Value
Will and his team installed a new Worcester Bosch Combi boiler etc approx a year ago today at very short notice after I came home from holiday to heating problems. He came round quickly, assessed my needs and took the trouble to explain my options and after we agreed, he smoothly set the wheels in motion. The job was pretty straightforward, but as it progressed it became necessary to also replace an exterior gas pipe, which in turn led to my meter needing to be changed due to a small leak. He called the relevant authorities and got that sorted too. I think Will's mission is to be the very best in his field and in every aspect of my job I don't think anyone could have been better. And I don't want to miss anyone out in my praise either, because ALL his team were incredibly efficient, good humoured, polite, kind, and a pleasure to have in the house. Today after having had the first annual service carried out, my opinions have not changed one iota. Excellent, well-run company, with the principles of times gone by and if I can paraphrase a well- known advert, they not only 'do what it says on the tin' but they know an awful lot about what's inside the tin too!
Diane, Norwich Posted on 01/10/2019 , work completed 01/10/2019
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased you’re still happy a year on from your Worcester Bosch combi boiler installation. It’s great to hear Will was able to attend quickly after your return from holiday, assess the heating issues, and clearly explain your options before moving forward. We always aim to provide honest advice alongside reliable boiler installation and heating system support. We’re also glad the wider work, including the external gas pipe replacement and coordination with the relevant authorities for the meter issue, was handled smoothly. Ensuring full safety and compliance across all gas and heating systems is always a key priority. It’s especially rewarding to hear the whole team made a positive impression throughout the installation and that the service has remained excellent following your annual boiler service. Providing consistent, long-term support for central heating systems is something we take real pride in. Thank you for your recommendation and for choosing Allstar Systems for your boiler installation, gas work, and ongoing boiler servicing and heating support.
Very knowledgable and great service.
Customer Service
Quality
Value
The guy that runs it, Will, is really knowledgable. Great service. Sorted problems right away. Explained everything. Neat and tidy. Very good service.
Joe, Norwich Posted on 24/09/2019 , work completed 24/09/2019
The trader replied (on 24/04/2026)
Thank you for your great feedback. We’re really pleased you’re happy with the service from Will and the team. It’s good to hear the issues were resolved quickly and everything was clearly explained throughout the visit. We always aim to provide reliable boiler repairs and heating system support, along with straightforward advice so you understand exactly what’s been done. We’re also glad the work was carried out neatly and left tidy, as maintaining a clean and professional approach is always important to us. Thank you for your recommendation and for choosing Allstar Systems for your plumbing and heating support.
Replacement boiler
Customer Service
Quality
Value
From my initial phone inquiry through to the installation and commissioning of the boiler, the service offered by William was friendly and first-rate. During the initial visit, clear and honest advice was given as to what would need to be done and why - and the price quoted was very competitive. When he arrived with his team on the agreed day, everything was carried out with calm efficiency and completed on time, and to the agreed budget. Communication throughout the process, whether by phone or email, was prompt and courteous and the warranty situation was clearly explained. Highly recommended.
Chris - Old Costessey, Norwich Posted on 08/09/2019 , work completed 23/08/2019
The trader replied (on 24/04/2026)
Thank you for your excellent feedback. We’re really pleased you’re happy with your boiler installation and the service provided by William and the team. It’s great to hear the initial assessment and advice were clear and honest, with a transparent explanation of the work required and why. We always aim to provide competitive, upfront pricing alongside reliable boiler installation and heating system solutions. We’re also glad the installation day went smoothly and was completed on time and within budget. Delivering efficient boiler installations with minimal disruption and strong organisation is always a priority for our plumbing and heating team. It’s especially good to hear communication remained prompt and courteous throughout, and that the warranty information was clearly explained for peace of mind. Thank you for your recommendation and for choosing Allstar Systems for your boiler installation and heating support.
Quick and Efficient
Customer Service
Quality
Value
Very clean, cleaned up after themselves. Very happy.
Which? Trusted Traders Consumer Posted on 30/07/2019 , work completed 30/07/2019
The trader replied (on 24/04/2026)
Thank you for your feedback. We’re really pleased you’re happy with the service and the boiler installation work carried out. Keeping everything clean and tidy, and making sure we leave no mess behind, is a key part of our plumbing and heating service. We always aim to deliver efficient boiler installations and heating system work with minimal disruption to your home. Thank you for choosing Allstar Systems—we really appreciate your support.
Great job, very well done.
Customer Service
Quality
Value
Will Smith and his team were prompt, professional, and polite. They were also good-natured and hard working, obviously very knowledgeable and helpful with a plumbing query not directly related to the gas boiler installation they were working on. Will explained what he was doing and why, and helped us decide on the best options of our installation.
Ben, Norfolk Posted on 09/07/2019 , work completed 09/07/2019
The trader replied (on 24/04/2026)
Thank you for your excellent feedback. We’re really pleased you’re happy with your boiler installation and the service from Will and the team. It’s great to hear the team were punctual, professional, and polite throughout the work. We always aim to deliver reliable boiler installation and plumbing and heating services with clear communication and a friendly approach. We’re also glad Will was able to explain the process clearly and help you choose the best options for your installation. Providing honest advice and support across both boiler and wider plumbing queries is an important part of our service. Thank you for your recommendation and for choosing Allstar Systems—we really appreciate your support.
Very good work at a reasonable price
Customer Service
Quality
Value
Will and his team replaced my mother in law's ancient boiler, replaced leaking pipework and installed her new cooker this week. Will came to her house on a Saturday afternoon to see what needed to be done and provided a very reasonable quotation that same evening, which we accepted and a date was arranged for the work to start. Due to my mother in law's deafness we had joined her at her house to explain what she wanted done. Will was very understanding and kept me upto date by phone when the work was in progress and when a bit of additional work needed to be done (the valves needed to be changed on the radiators before the system could be flushed) as mother in law probably didn't hear a lot of what she was asked. Mother in law is very happy with the work. She had been worried about the disruption, but Will and his team were tidy, polite and did the work in a couple of days. She is very happy to have heating, hot water and a working cooker again as, due to the leaks, the gas had been turned off for while. Would certainly recommend Allstar Systems.
Louise Posted on 13/06/2019 , work completed 12/06/2019
The trader replied (on 24/04/2026)
Thank you for your fantastic feedback. We’re really pleased we could help your mother-in-law and get everything safely back up and running. It’s great to hear Will was able to attend on a Saturday, assess the situation, and provide a clear and reasonable quotation the same day. We always aim to respond quickly, especially when heating, hot water, and gas appliances have been affected. We’re also glad the team handled the boiler replacement, leaking pipework repairs, and cooker installation efficiently over the two days. Carrying out safe gas and heating work while keeping disruption to a minimum is always a priority for our plumbing and heating team. It’s especially important that communication was maintained throughout, and we’re pleased Will kept you updated during the works. We understand how important this is in situations where customers may need extra support. We’re really happy to hear your mother-in-law is now comfortable again with heating, hot water, and a working cooker. Thank you for your recommendation and for choosing Allstar Systems—we truly appreciate your trust in us.
Friendly and professional
Customer Service
Quality
Value
Allstars were very helpful, efficient and always were able to give useful advice. They did a great job, and tidied up afterwards. I will be using them again.
Alice, Norfolk Posted on 14/05/2019 , work completed 14/05/2019
The trader replied (on 24/04/2026)
Thank you for your kind feedback. We’re really pleased you’re happy with the service from Allstar Systems. It’s great to hear the team were helpful, efficient, and able to provide clear advice throughout the work. We always aim to deliver reliable plumbing and heating services, whether that’s boiler servicing, boiler repairs, or wider heating system support. We’re also glad the job was completed to a high standard and that everything was left clean and tidy afterwards. Maintaining a professional finish is always important to us on every visit. Thank you for your recommendation and for choosing Allstar Systems—we look forward to helping you again in the future.
Highly recommended, Excellent workmanship and knowledge.
Customer Service
Quality
Value
Had a new boiler, cold water mains boost vessel and a water softener installed. The quote was very detailed and fair, breaking down the individual cost of each aspect. William and his team arrived promptly, were thorough and very conscientious. William is very professional and meticulous. Puts you at ease the minute you meet him and obviously very good at what he does. Will be using Allstar Systems for all heating needs going forward and will be recommending them to all I know. C Merchan 27/04/2019
Customer in Norfolk Posted on 27/04/2019 , work completed 25/04/2019
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 the additional plumbing upgrades. It’s great to hear the detailed quotation was clear and transparent, breaking down each element of the work. We always aim to provide honest pricing alongside high-quality plumbing and heating solutions, including boiler installation, mains water boost systems, and water softener installations. We’re also glad William and the team arrived promptly and delivered a thorough, conscientious service throughout. Professional boiler installation and heating system upgrades require careful planning, so it’s great to hear the work was carried out with precision and attention to detail. It’s especially good to know you felt at ease and confident in the service provided. Building trust through clear communication and expert advice is something we take real pride in. Thank you for your recommendation and for choosing Allstar Systems for your boiler installation, plumbing upgrades, and heating system services.
Very Efficient
Customer Service
Quality
Value
Will and his team replaced a boiler and I can honestly say that there was not a single problem with the work throughout. Will worked an incredibly long day to get the boiler up and running on the first day so we could have heat in the house. His knowledge of the boiler system is incredible and I would definitely recommend him to anyone.
Customer in Norfolk Posted on 14/04/2019 , work completed 06/04/2019
The trader replied (on 24/04/2026)
Thank you for your excellent feedback. We’re really pleased you’re happy with your new boiler installation. It’s great to hear the team delivered a smooth boiler replacement with no issues throughout. We always aim to provide reliable boiler installation and heating system upgrades that restore heat and hot water as quickly as possible. We’re especially glad Will was able to prioritise getting your heating system up and running on the first day. Working efficiently while maintaining high standards is always important, particularly during a boiler breakdown situation. It’s also great to hear Will’s knowledge and expertise stood out during the installation. Providing expert guidance and dependable plumbing and heating solutions is at the core of what we do. Thank you for your recommendation and for choosing Allstar Systems—we really appreciate your support.