For the past 10 years I have had a couple of tube heaters attached to a metal sheet which I put in the wifes car overnight when its going to freeze. The heat output is sufficient to keep the frost at bay and when she gets up for work at stupid o clock she can get straight in and drive. It works brilliantly. Recently some oik helped himself to my setup (My own fault - left it on the porch).
Just in the process of looking for heaters to build a replacement, and I had the idea of putting an electric patio heater (wall mounted) on a timer set to come on 30 mins - an hour before she leaves. Just wondering if anyone has ever heard of this being done? Likely to work?
Thanks in advance for any replies.