Uncooked rice often contains the bacteria Bacillus cereus. These bacteria can form protective spores that survive the cooking process and if the rice is cooled slowly (and left between 5 Â°C and 60 Â°C for a long time), these bacteria spores can germinate, grow and produce a toxin (poison) that causes vomiting.
Obviously the colder a climate is, the more a furnace is required to run, and the shorter its life expectancy. With our relatively mild climate here in Seattle and the rest of the Puget Sound, the average life expectancy for a gas furnace is 15 to 20 years if well maintained, properly installed, and properly sized.
1 Propane furnaces last longer than electric heat pumps: Propane-fueled furnaces last 5 to 10 years longer than electric heat pumps, on average. 2  Propane is more dependable than electric: Propane can be stored safely in a tank on your property, while electricity is subject to power outages. An electric heat pump produces heat below body temperature (98.6Â°F), so the air actually feels cool when placing your hand in front of a vent. 2  Propane furnaces last longer than electric heat pumps: Propane-fueled furnaces last 5 to 10 years longer than electric heat pumps, on average.