Hi Kate, yes I do! My OH thinks it comes on at 4pm again but the house is freezing if that happens (sometimes of a weekend if I can't get away with it) so for years I have let him think that it goes off once we leave the house but I leave it on as a heating engineer once told me that it was more economical to leave it on low as the furnishings store all the cold and the house thus takes longer to heat up again. Our thermostat is not allowed to go beyond 15 or he moans and threatens to turn it off so it's my way of getting my own back.