It seems only fitting that we're writing this while watching the snow fall outside. There are a few different heating systems that we tend to turn to when doing Airstream renovations. When we are working with a client to decide which route they'd like to go, we use the following basic pros and cons: Furnaces Pros: Furnaces run off of propane to create the heat, and they use battery power to push the air around with a fan. These systems can be a great option if you have a big