David,
The use of an electric space heater on an inverter is not a good idea regardless of the Vornado warranty. A space heater draws so much power that it will discharge your battery bank in a much shorter period of time than it takes your generator to recharge them. Therefore, when using a space heater while dry camping, only do it with the generator running.
When it comes to your Hurricane, it is a very simple system to maintain unlike the complicated AquaHot. One of the most common on again and off again problems on a Beaver is caused by the inline fuel filter installation or fuel connection at the tank. They are prone to let slight amounts of air enter the system when operating, and one air bubble will cause a flame out. The correction is to bleed the air from the system often, or install a fuel return line with a 1/32 inch orifice so that the system will constantly purge itself of air when running.
Gerald