Instruct: Classify a review as either positive or negative.
Query: One Tank Lasts Nearly 16 Hours But...

A few months back when researching this heater in Amazon comments some said one tank doesn't last the advertised 12-14 hours so I decided to time it. With the wick adjusted at its lowest setting and the tank filled just shy of the rim one tank lasted 15 hours and 54 minutes! The fuel gauge isn't accurate as it reads empty or full when it's not and the flame continues burning approximately two more hours when the gauge reads empty. The heater works very well and heats our small summer cottage style home to about 70 degrees when the outside temp is 33 degrees.Edit: After just 2 months the manual shut off no longer works so now I have to jolt or tilt the unit every time to trigger the emergency shut off to extinguish it. Inside parts must be flimsy or cheap to fail so quickly. Very disappointing.