For Installers Specifiers About Vaillant Find For support call: 0330 100 3143 Find an Installer Homeowners Repairs and Servicing Guarantee registration Vaillant Boiler Guarantee Registration Your Vaillant guarantee covers you for the repair of any defects related to the manufacture of your Vaillant appliance. The repair has to be completed by one of our Vaillant Service Engineers and will cover both parts and labour. Your guarantee does not cover defects which are unrelated to the manufacture of the product or a result of misuse. We'll send you the full terms and conditions of the guarantee along with you guarantee confirmation. Alternatively, you can read them here. Terms & conditions for our domestic boiler range guarantee Register your guarantee Your Cookie Preferences We use cookies and tracking technologies of third parties to remember your preferences, to measure and analyse the use of our websites and to optimize your experience on our websites. If you agree please click “accept”. You may here decline the use of those cookies. You can manage at any time the use of cookies through your browser settings and withdraw your consent at any time. For more information see our Privacy policy. Accept