How long does the cans of gel fuel burn, and what is the heat output?
Typically, a can of gel fuel will burn for 2+ hours, and sometimes up to 3 hours. Always be sure to shake the can well before you light it for optimum performance. Each can produces about 3,000 BTU per hour. When using all 3 cans in an average size room, it can raise the temperature by about 3-4 degrees. A independent heat source is recommended.
