We encourage you to watch our detailed Webasto heater installation and tips & tricks video.
If you're tempted to purchase your Webasto heater at a ridiculously low price from other online retailers, you should be aware that these are often European origin kits that are not compatible with all the North American parts and do not include some important parts. We have an extensive blog post about this here.
You may also be interested in our video comparing the Webasto Air Top 2000 to the EVO 40 heater.
For your safety we recommend that you install a carbon monoxide detector in your van anytime you have any fuel burning appliance like a Webasto heater or propane cooktop. They are widely available. We sell this combination CO2 and propane detector.
About the Fan
Webasto heaters have a variable speed fan that runs continuously when the heater is on. It runs very slowly when not heating and ramps up speed when heating. If you have a SmarTemp digital controller you can use a "fan only" mode.