I plan to install a new gas combi central heating system in my new house, it currently has night storage heaters. I am a fully qualified Plumber and was also CORGI registered but no longer work in the trade. Obviously I want to do the work myself but an ex-colleague has advised the gas safe regulations state I cant touch the gas side. I class myself as a competent person and the installation is in my own home and 'not for profit'. I have considered leaving the gas work to an RGI but the initial ones I have consulted are not keen on doing only a small part of the installation. Can anyone advise?