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.
What Is the Life Span of a Furnace? Have you been limping an aging heating system along for a couple of heating seasons and racking up high heating bills? The average furnace life span is approximately 15 years, though it can range from 13 to 20 years. While the equipment may last that long, itâs likely that your heating bills are higher than they need to be, since furnaces lose efficiency as they age.