There is nothing so wonderful as turning the key to your house on a frosty winter’s evening, stepping inside and being enveloped by warmth and the smell of dinner cooking in the kitchen. We all love the welcoming feel of home, but for many of us the reality of costly electricity bills means shivering under blankets in winter and sweltering in front of an inefficient fan in summer. Fortunately, there are numerous ways to keep your home warm during the chilly months and comfortably cool in the heat, which don’t involve taxing the electricity and gas metres. Join me, as…