Seems like overkill/inefficient to run a gas engine and diesel engine. The electric requirements are so small but it would for sure work. I'm just gonna run mine on a little Jackery and I have two tiny inverter gennies.
If your gonna run a gen you might as well just use an electric heater. That's how we heat our FWC during a couple of cold trips where we need the gen for other things.
I was only thinking inverter because I have one but yes such a small amount of power needed, batteries would work great too I bet.
The genny could be used for other things as well, kills 2 stones with 1 bird. That was my thought
I'll bring one of mine for other things, but I also have solar to charge the Jackery and the solar works while I'm away from camp when I wouldn't want to run the gennie. Oddly enough the slow purr of the inverter gennies really helps me sleep at night so I suspect I'll miss it as I'd always run all night with my pop-up camper. If you don't already own the batteries then bringing the gennie will be cheaper than buying batteries since you mentioned you're already bringing the generator. Running it all night for the heater may mean bringing extra unleaded. Another thing to note is these diesel heaters apparently don't handle sudden power loss well without going through shutdown (I guess the heating element gets too hot without the fan?) so if you have a gennie issue or it runs out of fuel you could have other problems.
