Free: Contests & Raffles.
The Mr. heater/ Mr. Buddy's work great. I leave mine on low all night with my wet clothes hung over to dry. Tent is 8 x 14. I got a hose adapter to attach it to a 5 gal. tank. It does use the gas. 5 gal/3-4 days.
We used them last year in our wall tent. It seemed like we had way more condisation then when we use the wood stove....