Excellent idea,any way off reduceing heating costs is worth the effort

Thanks for your comment, yes using a battery as a backup would be the 100% correct install, I personally didn’t want to spend any more money on the job as I didn’t have a battery lying around at home.

Hi. This set-up  is so very similar to mine, which I posted a YouTube video about and has been in -situ for 3 years.  I use red diesel too and draw cooler air from inside the bedroom and hot air into my lounge. It is so economical. As we don’t have a gas main where we live our only other options for heating are oil, which we have, or electricity, which as you can imagine is a big no no.  If I was to suggest anything that may help a little, wrap a couple of layers of silvered bubble wrap, the kind you can buy on a roll, around both your hot air inlet and outlet pipes, both inside the box and outside.  I found that it made a difference, just as you would lag an immersion heater it stops heat loss, even though your pipes are short.  I’ve taken my heater to bits for cleaning / servicing and am replacing some parts now, rather than have issues in the middle of winter.  Thanks for posting the video.  👍🏼

You should run the exhaust into a radiator in your conservatory, then back outside, you're losing potential heating.

Are you able to put together a shopping list for the outside housing??

Hi, good video. Quick question. Is it ok to suck fresh from outside even if its freezing? Would think the heater would still work as it should.

Heya mate. Those 90s connectors for the intake and heat. What size are they?