Established in 2011 Allstar Systems are Gas Safe registered & Oftec engineers based in Norwich. We are your local leading professional plumbing and heating experts who offer a fully comprehensive service for all domestic clients in Norwich. At Allstar Systems, we?re passionate and committed about providing our new and existing customers with maintenance services that they can depend on. We have 5/5 reviews on Which? Trusted Traders and Facebook and 4.8/5 on Google which proves that you?re in good hands.