I have two shops if you will. They are attached. My winter shop is only about 12x20 very easy to heat with a barrel stove and box fan. I use a kerosene torpedo heater for 10 or 15 min,s while I'm firing up the barrel stove. I havn't used 5 gals as yet this winter. I saw one shop heater made from an electric water heater (filled with anti-freeze and water) a recirculating pump, BIG truck radiator and a box fan! Worked good!And I have no idea why I started this thread!!!:doah: