http://kannikar.net/Travel/brentford-plumbers-tw8-plumbing-in-brentford-plumber-tw8-24-hour-plumbers-brentford-tw8-2/ (ii) The extended guarantee applies to the boiler components only, it does not apply to other system components e.g. thermostats, time clocks, motorised valves etc. Tue, 29 Jul 2025 13:52:10 EDT en