No! In October 1997, a climber from Vancouver, British Columbia activated the heater at 25,350 feet on Mount Everest. He was delighted to note that it was not affected by the elements. As you are aware, it is extremely difficult to light a fire or stove at high altitudes because oxygen is required. This is not so for the heater. Sadly, the team had to return to base camp because the weather was ferocious. No one made it to the top!