Just be aware of what you're getting. The Snugger is a cheap Espar D2 knockoff from China. The glow plug has a failure rate so high that you need to just buy a replacement glow plug when you get the unit. The power switch was re-purposed from a Cracker Jack box toy. A lot of people report strong fuel fumes inside the vehicle, especially at startup and shutdown. It's not very well regarded at places like the Sports Mobile Forums, Caravaners Forum, Sailing Forums and the RV Forums. Most say they've gone back to Webasto or Espar.
Three RV dealers here locally. The 2 dealers that started carrying AirSnuggers no longer sell them because of the 3-of-4 failure rate and have gone back to Webasto. The other dealer sells Espar and never messed with the Snuggers. Unfortunately that particular dealer also thinks Espar heaters and all its spare parts are made of gold-plated platinum, and are priced accordingly.