Another thing that people often point to as a negative thing about ketosis is that people can suffer symptoms such as headaches and dizziness in the first few days of a ketogenic diet. Also, athletic performance can suffer until the body adapts to using fat for energy instead of glucose.
Forced air furnace heat exchangers have an average life expectancy of 15 years, with a range typically between 13 and 20 years. Most heat exchangers used in models today today will last between 15 and 25 years and are usually made from aluminized or stainless steel.
Gas furnace life. I just got a quote last week to add a heat pump to my current 14 year old AC/gas furnace system. For fun, I had the dealer quote an all new system as well as the heat pump. From what I've gather on this site the average life expectancy of this equipment is around 15 years.I'd like to just get the heat pump and hope the gas furnace would last 15 more years (life of the new heat pump). The gas (propane) furnace is a Carrier (58SXC080) 92% efficiency.'d like to just get the heat pump and hope the gas furnace would last 15 more years (life of the new heat pump). The gas (propane) furnace is a Carrier (58SXC080) 92% efficiency.