Shop Heat

Forced oil furnace is what I've been looking at. You can get them almost free used in working condition from people doing natural gas furnace upgrades. Then have an hvac shop bend up some ducting that comes off the unit and has two directional arms that blow heat. A 250 gallon tank outside, a small exhaust vent and done. The HVAC guy I talked to about it said its probably the most efficient and affordable option for a shop. Said $500 would get all the filter ducting and heat discharge tubes built.