Propane Pedastal heater - kind used on construction sites (not salamander). I think it is over 100k BTU. Has hose, push button ignition, and requires no power to operate.
I havent used it in a couple of months but last time i used it it kept me way to warm. the hose works for those little coleman propane tanks. will work with the bigger tanks will just need a adapter. 20 bucks.
Also have a brand new blueryno propane tank never used 20 bucks.