Does what it should, but not a money saving heat source. It uses about 1.16 gallons every 24 hours on high. Which would be 34-35 gallons of fuel per month. At $3.30 a gallon, that’s over $100 a month to heat my 24x32 insulated garage on high, keeping it no warmer than 52 degrees. In a smaller space, it would be perfect.