jlmead wrote:Rob, thanks for the reply.
We have a Propane Hot Air furnace. Last winter our propane bills were $1,700 in Jan, $1,800 in Feb, $1,600 in Mar, plus several more fill-up's in the fall and spring. So we are around $8,000 a year in propane. And that's with keeping the house around 65 degrees.
What we would like to do is have the coal furnace connected to our existing hot air duct work and leave our propane furnace installed as a back-up.
Where are you? Do you have a show room? Feel free to send me a private message and I'll give you my phone number.
I'm not a dealer of any sort, just a "stoker enthusiast". My showroom consists of a cluttered basement with an EFM stoker boiler silently heating the house and providing hot water…for 50% less than heating oil at its current prices.
There are coal furnaces available that can be tied in to your existing setup. But before we get into those there is another option that you should consider.
A coal boiler can be tied into your ductwork with a water-to-air heat exchanger, and also provide domestic hot water. Here are some links to get you thinking:Coal Stoker Furnace- New Home Owner.Heat Exchanger