A/C 101 - How Central Air Units Operate
http://miloepcn408.wpsuo.com/top-pointers-to-assist-your-heating-and-cooling-unit-maintain-your-home-cozy-this-winter
Can you picture life without a/c? Sweltering heat waves that can melt the rubber on your shoes, prepare an egg on the dashboard of your automobile, and make it nearly impossible to have an excellent night's rest--