Q how much will a replacement boiler cost? Enquiries@draintechnology.co.uk. The accc has issued a recall for faulty cabling, rcd, and circuit breaker sold as part of smartspace kit homes prior to july 2015 through the bunnings group limited. We have a range of helpful videos to answer your boiler questions additionally, we have a full range of product literature available. If a combi boiler sounds like the right system for you and.