I just won this Mint, unused Gerry Infra-red stove on eBay. Unlike the stove/infrared heater combo, the stove did not come with the little arm that held the burner at an angle. The burner only sits in the upright position for cooking. I tested the stove on a warm (85 degrees F) day with 20 mph winds. It boiled a liter of water in 12 minutes. The stove is windproof and with no flame, it would be an ideal stove to use under a tarp or in a tent vestibule in inclement weather. Based on significant research conducted by Backpacker Magazine in the '70's, I suspect that the Gerry doesn't produce nearly as much Carbon Monoxide (CO) as other stoves. The Backpacker tests showed that on any brand of liquid fuel or gas vapor stove, where the burner flame impinged on the pot, the greater the concentration of CO. When the testers fabricated longer pot supports, thus increasing the distance between flame and pot, they found marked decreases in the production of CO. As the infra-red stove produces no flame and supports the cook pot high above the heating element, this may produce very low amounts of CO. Of course I don't know this and do not have the equipment to test the hypothesis. The distance and no flame may also contribute to the long boiling times as well.