Hi all, I have an lp modine 75k btu hot dawg heater in my barn/ shop. My question is this. Right now Its hooked up to a standard 100# insulated lp tank outside the barn, it costs me here in Maine well over $200 to fill it and when I'm busy in the shop (which is insulated) I can burn through it in 2 weeks. Is it possible to for me to buy a 100# tank (like a standard 20# bbq tank but bigger) and install it in the shop? I can get it filled at mt local gas station for about $80. of course it will be heavy but I have a big truck and hand trucks (dollies) etc. My concern is this, when I use lp bullet heaters etc on job sites the 20# tanks tend to "freeze" up. Is this just due to them not being insulated? could I wrap the tanks or perhaps make a spray foam case for it to sit in? Anyone ever try this?