I just heard a really weird noise. Kind of like a hissing and then water running, and then a repeated banging noise. I froze in confused fright. Then I realised it's the heating coming on. It's been a while since we've used it while I've been home, I'd forgotten what it sounds like. Though come to think of it, why is it coming on at all? I mean, I know it's not exactly roasting hot, but it's not central heating weather. I'd better go turn it off before I can't sleep tonight for the heat.