posted 10 years ago
I used a pile that I would guess was about twice that big to heat water. I didn't add any manure to it, just water. coiled some 1/2" poly pipe through it and stomped it down real well with each new layer. heated the water up to 160º Fahrenheit for over a year.
I just used it to heat bathwater, but I don't think that was the highest use. because it was producing heat constantly, I think a better use would have been to heat a structure by circulating water through a radiator inside, but I didn't think of that while I was building it. as it was, it made a pretty great outdoor bath. and once the wood chips had broken down enough that the pile wasn't heating anymore, it was still a great heap of mulch to use anywhere we needed it.
that was a mix of alder, Doug-fir, red cedar, maple, and a few others I couldn't identify. maybe a third to a half of it was cedar, though, so I was surprised that it heated up so well.
I'll second the wine caps recommendation, too. easiest mushroom I've ever grown. bees like the mycelium, too, and it's great for the dirt. only problem I have with it is the violent vomiting that follows when I eat it. apart from my sister, I've never met anyone else who had a bad reaction to it, though, so don't let that dissuade you.