We've been sleeping in our camper on week-ends. 2 weekends ago I forgot to turn the furnace off, and last Wednesady night we wanted to sleep in it. That's when I realized I'd left the furnace on and the tank was empty. Luckly there's 2 tanks, and I always have 1 turned off, even though I've got the automatic switch over. I don't use it for this very reason. So I was able to flip tanks and we had a good night, and a good Thursday night and (Last night too). During the day we turn the furnace off since we're in the house or at work. What's sad was, I just filled that tank, and in a week it was empty and didn't even get to use the propane! (sad)... live and learn. But I got the tank refilled, so we're good again!
This camper is still new to us (only 3 months old now) so we're still learning. But it looks like we can get a week out of one tank, using it this way. We also now have 2 electric heaters inside and that helps extend the propane.
This camper is longer than our last one, and it has 3 slides, the old one had none, and it's got a taller ceiling than the old one. The 31 foot Springdale (old camper), propane tank lasted 10 days, running the furnace 24x7 with supplemental (1 ceramic heater). But the new one has much more space to heat. It makes a big difference!