<strong>Yahoo Message Number: 83098</strong>I know there is a little radiator back behind my water and waste control panel. <br/>Does anyone know which zone it works off of or is it on automatically on anytime the hydro hot is on? <br/>What is the lowest temperature you would be comfortable parking in that would not cause that area to freeze?<br/><br/>Thanks<br/><br/>John Shankland<br/><br/>2007 Inspire 52028