I am a complete Newbie in this area, we was thinking of getting a wood Coal outdoor furnace, but also looking into this, I see how about 180 gallons of oil = 1 ton of this Anthracite coal. But what about If you have your Coal furance in the Shed outside or the garage at 130 feet away , and not the Basement...... Surely the efficientcy for this set up is much less ???? Can anyone comment on about how much COAL I may have to use -old farmhouse not well insulated--with this kind of setup. We use about 700 gallons of Oil a year --air furced oil furance-- keeping thermostat at about 68 degrees. Anthracite coal in my area costs $200 a ton (Western PA). Worth it for me?
I hope you mean a boiler not a furnace. It could not be done with a furnace. Outdoor water heaters are seriously inefficient. Yes, it will save you a lot of money. About 4 tons if the boiler (you could use a hot air furnace there but I still would recommend a boiler instead) is in the basement, maybe 5 tons if it is 130' away from the home. These numbers would be for a regular coal furnace/boiler, an outdoor water heater would add a ton or two consumption at the very least. I would find a way to get a real boiler into the home, you will spend a fortune running a lot of expensive plumbing and lose a warm basement and floors. It isn't just efficiency you are giving up with an off site install, the ambiance is priceless. I had a drafty, cold house years ago, now I just put up with the wife opening the windows now and again complaining about the heat.
I shut mine down last week and the cellar now feels cold, does that tell you anything?