The specific heat of water is 1 calorie/gram Â°C = 4.186 joule/gram Â°C which is higher than any other common substance. As a result, water plays a very important role in temperature regulation.
Central air conditioners typically last from 10 to 15 years. The lifespan of a central cooling unit may be reduced if its capacity is not properly matched to the cooling load of the home.
Typically, though, furnaces will last 15 to 20 years, while boilers can last up to 30 years, depending on the quality of the water supplied to the system. Proper maintenance of your central heating system includes regular inspections and cleaning by a licensed technician.