I hear you guys and others talk about heating oil and or diesel. I've never been around those systems. Is it an Eastern US thing? An older homes thing? All I've ever known is gas and electricity. How does it work in a nutshell? I guess I know about propane that farmers and ranchers use since it would be really expensive to run gas lines way out in the country. Are the system at all related to propane?
It is an older type, mostly from rural homes. So lots of old farm houses that had a wood stove upgraded to an oil burner.
Fuel oil is essentially a grade of deisel. There is a different bunch of additives because there is no "engine wear" or other issues.
Works similar, fuel is sent through an injector nozzle to the ignition and the heat is transferred through what amounts to a flat iron plate(heat exchanger) the air passes over.
They got a bum wrap for being "dirty" but this was due to old(think 1940's) furnaces having the exchanger rust, get pin holes, and then the burnt exhaust could enter the home's air stream.
They are not really dirty, at all, and frankly there is a WHOLE LOT MORE BTU's in fuel oil than in propane and especially electricity. A lot of older, drafty type homes in WI kept them for that reason(think farm houses from 1890) even though the coop's pushed really hard to switch to propane.
After while they just jacked the delivery rate and priced people into by force.
When I moved into my current home the original 1975 oil furnace was in the shop, the exchanger had some pin holes. Home is on propane now. Suffice to say, in the ol' pole building shop that furnace had enough horsepower to heat it up in about 5 minutes. In WI, the mass switch to propane started in the mid 1980's but was mostly completed in the late 90's. It had more to do with people needing a new furnace than anything else and the price difference in fuel cost, which was mostly driven by the coop's delivery surcharges.