just been out to price a job, basically it a large 1 bed 1 bath bathroom penthouse type flat with a 23kw output gas combi boiler, for reasons apparent to only others they are unable to replace the current knackered boiler with a gas one, so call in your friendly sparks, any ideas on what could be used, tenant would prefer not to have a large cylinder sitting in the cupboard as that is where the washing machine currently site, Cheers