Chinese Diesel heater, don't be fooled part 1

Be careful ordering one of these as most suppliers do no have any to sell you. Even though they are showing them for sale. With electricity getting way out of hand at the moment & I believe due to rise again. It's time to look at an alternative way to heat my workshop. I am going to do it in as an efficient way as possible to use return air to refeed through the unit. I am sure this has been done by many other youtubers. I was also going to do a heat recovery from the exhaust pipe. But it seems that once you are up to your heat settings & the unit slows down, then so does the heat in the exhaust pipe & soon has very little benefit. So i may not bother with that. Please look out for part 2 coming soon to see what the cost ends up being Vs using electric heating.