I drive 18-20 miles to work every day with the heater full on pointed towards the pump and tank,but even when i first get in it`s no where near problem causing.When you start first thing in the morning make sure you keep the cold out by closing all the doors on the van,the only problem you might have is the pole hose,if i`m not using a pole i never leave it in the shade when cold or it will freeze,but the small hoses are easy to warm up.