[Dylan16807]

> it's perhaps because the LPG tank is usually outside with a rather large surface area, so if -40 degree days are rare, insulating the tanks and providing a heater might not be very cost-effective vs. having multiple fuel jets in your burner for multiple viscosity fuels.

It's more or less a one-time cost and you might want the simplicity. Tradeoffs rather than it being inevitable.

And multiple fuel jets aren't enough. If you can't depend on the propane, then you need a lot of backup fuel.

> small burner... next to your tank of highly flammable gas with lots of no-smoking signs around.

You have fire that's not very far anyway. It's not hard for an expert to design something that's safe, since you don't need all that much heat.

> Though, I would guess in colder climates, if you really wanted to use LPG, you could put an electric fuel pump in your tank (so it doesn't rely on vapour pressure to feed) and have a burner that pre-warms the fuel and includes a small electric heater for starting.

If you prefer keeping the tank design the same, that sounds fine. A tiny pump would take barely any power, so a cheap solid-state generator attached to the burner could run it and charge your phone too. You don't even need a battery to get things going; a 1 pound tank could be warmed by hand if everything else goes wrong.