For the past 16 years I have put portable ceramic heaters in my butler if it gets near 32 degrees. I have never had an issue other than waking up frantic at night and running to check if my van is on fire. Now I have 2 vans with possibly a 3rd in the next year and multiple employees in charge of setting up the heater. As I look for commercial office space it makes things significantly harder and more expensive to find a spot where it's possible to put 2-4 vans in a heated environment. Are there horror stories of guys losing their trucks due to heater fires? Is it worth it to pay the extra money to find a warehouse space I can park the vans inside? I live in TN where it can consistently drop below 32 for a few hours a night, but rarely does it get below 20 degrees.