This heater is used on a sailboat in NH during the winter months. The boat is a small space so the heater is a bit much as it keeps the interior temperature close to 90 degrees even when its -10 outside. The heater holds just about 1.5 gallons of clean burning kerosene. It uses around 5 gallons per 24 hour period. Its easy to refill with a siphon. The kerosene is clear, clean burning and odor free. The heater starts up with the press of a pedal and there is no odor. At shut down, another press of the pedal extinguishes the flame. There is a slight odor once you turn the heater off. However, it does not linger. We have left the heater on while sleeping, we do have a carbon dioxide detector and have never had any issues. Performance Starts right up, stays lit as long as there is fuel. Shut down is easy and it is relatively odor free. Ease of Use You have to raise the wick to ignite the flame. After a few weeks of continuous use, the integrated ignitor quit. Have to light with a lighter. otherwise, very easy to use. Durability The ignitor quit after a few weeks of use. No other issues. Design Its easy to move around with the carry handle. It is bit bulky for our use. Safety No problems with carbon monoxide. No danger of tipping over with the design.