Interesting. My dad has a "Webasto" system, which is essentially a tiny, diesel(or petrol,if your car uses petrol) powered heater, which heats up the coolant - when you turn it on(it has a remote) it also turns the fans on, warming up the engine and the interior. And it uses the fuel from your tank(it has its own fuel pump), so it doesn't deplete your battery to heat up the interior.
Yes we have many of those here as well. But they actually do deplete the battery somewhat, because the heater needs to run the fuel and water pumps and interior fans on battery.
Absolutely, but I imagine you can run a pump and a fan much longer off battery than you could a 1500W heating system. Or do they require plugging into mains?
