[9 LIVES]

I bought the do-it-yourself kit from Freeburn and with that kit it comes with all the parts you need to make your own waste oil heater BUT: two 55 gallon metal drums, drum stands & heat exchangers. Which I made my own heat exchangers by cutting circles in the drum with a hole saw then using exhaust tubing to run through the drum, welding it all together when done. Keeps my non insulated 40X64 shop at roughly 50-55* when it's 20-35* outside. It's nice and toasty in the 20X20 square area around the heater though.