It is looking like a neighbour wants one of these heaters for her 12 x16 foot out building. May be wanting me to install it with ducting for even heat distribution. Is currently using propane but doesnt like the humidity that propane adds to the room. So I may not be the only one using one of these out here soon. If she has me go ahead and install it I will be doing it very different than I have done in my home. Everything will be outside. I will take pictures.

That project is now green lighted.

Double digit lows for days ahead, I dont think it got up to 0 C today at my place, a little snow in places, its now -10 C and falling. Just heating about 650 - 700 sqft downstairs. Wall temps downstairs measures 19 to 20 C depending where I measure the temp. Upstairs I am not heating but the temp upstairs is measuring 16-17 C ( Will likely fall a lot overnight due to all the windows)
I am anticipating a low of maybe -12 C outside so I have bumped the fuel pump hz up to 4, its blasting out a serious amount of heat. The down side is at a much higher HZ setting my fuel consumption rises greatly, I will now burn through 6+ liters in 24 hrs (maybe a little less as I can bump the HZ down if the sun comes out tomorrow )

The garage heater has just been set at the lowest setting .8 HZ. That has so far kept the garage (21 x21 )from falling below 10 C, and is using a little over a liter of fuel in 24hrs, again my garage is poorly insulated, r12 walls, big leaky windows, overhead doors dont seal well.

EDIT: I may have the heater set higher than I will need, I might find 3.5 HZ to have been fine, will find out when I get up Saturday and see how warm it is in the house.

This heater worked perfect. Downstairs held at a solid 20 C overnight, upstairs 16 C.

Dont know what the low was overnight but it was -13 when I went to bed.

EDIT; The garage temp fell to +6 C overnight, thats ok as I only want it to stay above 0 C.

Not sure what the overnight low was, I am guessing -13 or so. Its still - 10 today and the area downstairs I am heating is a toasty 20 C, the upstairs is 15 C, So coolish upstairs.

I am really liking what this heater can do, I am expecting it to fall short of my heating needs somewhere around -15 C or so, but that is fine I switch to wood heat then. I am already thinking about adding another one of these for a heating the upstairs option.

I just pulled the trigger and ordered in a on demand propane water heater for the house. Now that I am using the diesel heater, and because I have repurposed my solar panels from water heating to battery charging for the months of mid Oct, Nov, and Dec, I need a method for heating water. No way do I have the time to modify one of these diesel heaters, maybe next year but for now I am hitting the easy button. Spoke to a few people around here that have them so I could get a idea on what to expect for consumption. From the experience of others using them it would appear that 10 pounds of propane per month is about what I can expect to go through, though many factors can change that estimate.
That seems a reasonable amount to me. 35 to 40 pounds of propane to get me through a few winter months is something I can live with, 15 to 20 dollars or so of propane ( not bought from gas stations as that propane has road tax included)

Overnight low must have been -12 or so, I did not look when I first got up but it was -10 outside around 8 am. Downstairs has been staying a solid 20 C through this double digit cold snap. Upstairs is sitting at +15 C

Still just using this diesel heater, have not lit the wood stove yet.

Edit; Forecast is showing double digit overnight lows until next Sunday or Monday, So this heater is getting a good test.

Another 100 liters of diesel put away. - 11 C right now, I expect it to drop another degree or two overnight. I have been setting the heater to 4 hz sometimes 4.2 hz overnight then in the day backing it off to 3.2 sometimes 2.9 hz during the day so I am estimating I am averaging 6 liters of diesel through these days that stay below 0C and nights that have gone to -15 C. I dont consider that to bad considering how many sq ft I am heating with this thing.
Now another friend who has seen mine in action is ordering one of these for his garage. He lives in Edmonton so I wont be helping him install it, just to far to drive, but he wont really need help, these things are really pretty straight forward to install if your the littlest bit handy. I look forward to hearing how it works for him. His garage is filled with expensive metal processing equipment that needs to be kept above 0C with dry heat so there is no condensation on the metal working tools.
My neighbours heater is in transit and should be here soon, that one is going to be installed on the outside of a building, I am planning to mount everything inside of a large diameter steel pipe on the back of the building. The pipe to protect everything from the elements, but also goats, god damn goats, I hate the stupid animals, they will destroy everything if given a chance.

Edit: must have got really cold last night I suspect -15 or so only up to -9 now during the day, upstairs temp has fallen to 12 C, downstairs sitting at a comfortable and unmoving +20 C.
When I was getting more diesel the other night I noticed regular gas had fallen to 83 Cents.

Checked on line tracking and I should have my on demand water heater here Monday. The cold weather is about to end Sunday, this should be the last night where I am expecting --14, -15 low for a while. We get above 0 C all next week. I heard on the news the other day that Alberta set a cold record, the longest stretch of average low temps for the month of October.
My downstairs is still a solid 20 C, upstairs +13, +14 depending on how I squint at the needle. It of course goes higher during the day when/if the sun pops out.
No way would I have thought that this little heater would have kept my house comfortable down to -15 C temps (overnight). I am developing some respect for what this heater can do. It has run non stop since the cold snap started oct 12th or so. I feel like I have hit a home run discovering these heaters.
My house is very well built though, not typical. When I was framing the interior walls both up stairs and down stairs I insulated every interior wall (R12). I wasnt thinking about containing heat, I did it at the time thinking it would help with sound reduction.

Another 100l of diesel put away. ( now today, the price was up a bit )
My water heater has arrived, but no time to hook it up yet. I think it is a 10 liter a minute to 145 F. 75000 BTU unit. Way more capacity than I will need, in fact when I spoke with a few others using these I think 7 or 8 liters a minute was the largest someone had. Everyone said they had lots of hot water even with the smaller units.
I had to open it up and have a look to make sure it was what I wanted, just a simple, no circuit board unit, all electromechanical (other than the burner ignition ) so its something I can keep running myself, as I am my own warranty department.

Here is a vid of a guy using one of these diesel air heaters heating his 600 sqft garage. Of note in the comments, he mentioned that he has heated his garage down to -17 F (-27 C ). He says that at that low temp it does struggle to keep up, but still keeps the garage comfortable. Thats pretty impressive for a single little heater of this type, down to -27 C. I have not seen those temps yet, but can vouch for these heaters down to -15 C heating roughly the same amount of space. You may find his installation method interesting (using the window,( it works).

https://www.youtube.com/watch?v=86gdnTbsmqo&t=339s

Good little video and looks like a sweet device.
One comment I have is, I would have perhaps put the air intake a little further away from exhaust. The exhaust should also be out past the edge of the soffit so fumes do not go up into the soffit and back into the house. I know it’s a garage with closed ceiling but I would still get it past.

Maybe the exhaust isn’t much so perhaps not needed but I do know for a fact some people have placed generators outside a home and exhaust has crept back in via the soffit and nearly killed a few people, so something I would err on the side of caution with.

We are now into Nov and I have not lit the wood stove (either of them) yet and we had a bad cold stretch in Oct. I have just used this heater. I have been able to figure out roughly how much diesel I would consume if I wanted to heat the house to the same comfort level as if I was using wood and after considering things like the type of wood I burn, the efficiency of the wood stove vs the diesel heater, I can roughly figure that for my situation one Canadian barrel of diesel (34 imperial gallons (154 L )) is equal to one chord of wood.(Spruce/pine)
This gives me a idea as to the cost, so 154 x 4 = 616 L I will add 15% more just to be on the safe side and that gives me a total of 708 Liters. I will say 700 even. At todays pricing of 88 cents a liter thats a cost of 616.00 dollars. Frankly thats not bad at all. I would of course need more diesel heaters than just the one I am using, I estimate 2 to give good even coverage of the full basement, then one for just the upstairs.
I have been stocking up on diesel and filling barrels but I have a couple of those cubes sitting around the property and if I remember right they hold 1000 Liters.
If I fill them I would have nearly 3 years of heat storage if using diesel exclusively for heat. I of course am only trying to cut back my wood use in the shoulder months, below -15 wood will do the heavy lifting heating wise, but still it is good to know that I could have a option beside wood if I break a leg or something and cant haul wood in, always a possibility.

Peppercorn, perhaps you’ve already done it, but some research should be done on using plastic totes for diesel storage. Those totes are known to break down rather rapidly under UV from the sun. I don’t know what the effects of a petrochemical would do either. A 1000L diesel spill would be a significant financial lost, but a sizeable environmental one too.

Peppercorn, perhaps you’ve already done it, but some research should be done on using plastic totes for diesel storage. Those totes are known to break down rather rapidly under UV from the sun. I don’t know what the effects of a petrochemical would do either. A 1000L diesel spill would be a significant financial lost, but a sizeable environmental one too.

I was informed by a friend who works for a "fuels recovery" place that these tanks can hold diesel, though I will check that out myself before going ahead. I will keep the tank in a outbuilding or under a tarp if I do go head this way. I love the compactness of the storage compared to barrels but as I am thinking about it more, a single leak could cause a rather large financial/enviromental loss

Just tested my on demand water heater and is it ever sweet. I have set the temperature to the highest I can stand, so I dont have to adjust anything when I have a shower, just turn on the hot water and soap up. I have not finished the install, I still have to tie in the heater exhaust to the old gas furnace exhaust, but I will use it as is until I can get that done.
To test consumption I have hooked up a 30 pound propane tank and I will see how long it will last me. I am suspecting a long time, I dont even have the temperature setting past the 1/3rd mark and the water is as hot as I can stand.
Found one problem, not a problem just a characteristic. I do not have a pressure tank, I do but quit using that decades ago and put in a industrial quality on demand water pump. The thing is great but when you first turn on the hot water, using this on demand heater. The burner fires up, water flows and a second later the burner shuts off because the pressure has fallen and the pump hasnt spooled up yet. If the pressure drops the heater has a safety that turns off the burner.
I could adjust the low pressure switch that the pump cuts in at but I found a simple work around. Turn on the hot water tap, wait a second (The burner shuts off, the pump spools up), close the tap and open it again right away and the burner stays lit.

I know I said I would mount this unit in a pipe behind the building but when she seen how small it was she said to put it in the building so that is how I have installed this one. Once I fired up the unit she was very happy with it, before I left I heard them talking about ordering a couple more of these things. They are that impressive..

This building is 12 x 16 so I will get some good feedback as to how well it works for them over the winter.

Mid November and I have still not lit the wood stove, just using one of these.

Its been a couple days, and I have heard back on how well that heater is working, unfortunately not with numbers in C or F that I would like, but I was told that with the overnight lows down to - 15 The building was kept warmer than she wanted for working in. I had left the controller set at 1.3hz and that means in 24 hr the heater was using 2.2 liters in 24 hr. She was going to back it down to 1.1hz and see how that does. That setting will bring the fuel use well under 2 liters for this 12 x16 foot structure at -15 ( I think it has a 11, maybe a 12 foot ceiling, just r12 walls and ceiling )

This heater is replacing a big propane heater that they had been using.

Edit, no sooner did I type this and she called me up to say two more are on the way for me to install in other structures, replacing propane and electric heaters.