Back in May 2014 Elrond Burrell (https://twitter.com/ElrondBurrell) started writing a blog to help demystify Passivhaus and to discuss some of the miscommunicated and misunderstood aspects of Passivhaus, low energy and zero carbon buildings. I read every blog post avidly and almost always find myself thinking “I wish I’d written that”. Well, I didn’t, and I don’t expect I’d ever be able to put these things as well, let alone better, than Elrond so all I can do is encourage everyone who is interested in these topics to read his blog and get hugely better informed.