Yep.I turn the heat knob down on my pro1200se, and on the rage i keep all the van doors open.
And you are always thinking to yourself when you are stuck inside the house cleaning the carpets
"I hope some a$$hole isn't stealing from my van" with the doors being open.
Once i did catch a competitor in my van, came out finding him searchin in the front for something. He couldnt run fast enough once he saw me. He was about a half second from getting my foot so far up his arse it would have to be surgically removed. He hopped back into his van and sped off. I think he was searching for cash.