Battery life running fans for hot air heating

If you have blown air do you need the fan running whilst you are out or just the gas fire? 

Hi Easy T, we don't have a gas fire, just blown air that can be run on gas or electric.....but needs electric for the fans. I'll just have the heating on when we come back in so say 10pm until 10am when we set off home.....unless the boss sees this post in which case the heating will be on full from leaving our drive until returning home 😂😂

Normally when the blown air heating is on in our caravan be it with Gas or electric  , the blower fan is constantly running , the  heating control unit determines what speed it runs .

It may slow when the inside temperature rises but never stops , so if the heating is off our fan is off we have no way of switching it on/off manually (the fan) .

Therefore I would guess the battey would last a reasonably time over a 2 to 3 day period .....but that's purely dependant on its charge /condition .

How long are you proposing to go for?  If it is just for couple of nights then I don’t think you will have a problem

As we don't know how big or how old your battery is then no-one can really answer this. Can you not run your heating at home and see how many hours it lasts? That will be your best way to find out.

Mine has lasted 5 or 6 hours without the battery going flat but I do have a newish battery.

If it is any help in estimating battery life, the old Truma blown air system used to run at half an amp.

peedee

do you have a solar panel on the roof? if so, this will offset some/most of the power loss through fan use...

as above, i dont think youll have a problem.

Thanks for the replies and advice.

Our battery is just over a year old and we have a solar panel. The battery is 100Ah, 700 amp whatever that means in power. We were only planning to go for a night, I work full time so can only grab the odd night here and there. We've always stayed on a site with hook up before in the winter requiring the heating on. This year we fancy trying to stay in CL's or country pubs that allow you to camp overnight in their car parks. As many of these don't have hook up we'll have to self sufficient for our heating. My life wouldn't be worth living if I took my beloved away for a night and the heating packed up in the middle of it! 

At least you all seem to think we should be OK for the night so we'll give it a go. If the heating does fail I have this thread to refer to........not that I'm scared or anything 😂😂

You will have no problem staying just one night, just make sure you battery is charged before you set out.

peedee

Worst case, say the fan takes 1 amp, you should  comfortably get 10 hours without noticing much discharge if your battery is in good condition and provided your other loads are small