11. Coils either get rid of heat from refrigerant or absorb dfheatfrom air
12.
13. Works Cited 1. "Cambridge Energy Alliance» Blog Archive » Energy Efficient Products." Cambridge Energy Alliance. Web. 07 Mar. 2011. <http://cambridgeenergyalliance.org/res-links/energy-efficient-products>. 2. "Hot Items - Page 4457 | GD International." GD International - Wholesale Products from China. Web. 07 Mar. 2011. <http://www.gd-wholesale.com/all/5/hot-p-4457.html>. 3. "Goodman Package Units." Goodman Airconditioning and Heating. MD's Cooling and Heating, LLC. Web. 7 Mar. 2011. <http://www.mdscoolingandheating.com/goodman_air_conditioning_equip ment.htm>. 4. "Refrigerant Gas( R134a) - Tootoo.com." TooToo.com - China Manufacturer Directory, China Products, China Suppliers, China Trade, China Factory. Web. 07 Mar. 2011. <http://www.tootoo.com/s-ps/refrigerant-gas--r134a---p-930620.html>. 5. "Vapor-compression Refrigeration : Reference (The Full Wiki)." The Full Wiki - Get the Full Picture on Any Topic. Web. 07 Mar. 2011. <http://www.thefullwiki.org/Vapor-compression_refrigeration>.