About half of all the energy that is produced in the United States is created by coal. Of all this energy, a great deal is created for electrical purposes to provide conveniences in the home. The home environment is regulated by energy through the use of both heaters and air conditioners. Air conditioners are considered vital in warmer parts of the country. In fact, some people like the scholar S.F. Markham believe that the greatest contribution to society came about due to the invention of the air conditioner. Air conditioner need to be kept in good condition so that the…