The Environmental Protection Agency EPA has mandated the eventual phase out of R22 refrigerant through the Clean Air Act. What does this mean to us?
air conditioning
Environmentally Friendly Refrigerants For ACs are Here
Honolulu to Air Condition Buildings with Seawater
A new green project called Honolulu Seawater Air Conditioning (HSWAC) proposes to cool down buildings with seawater, rather than fossil fuel-based air conditioning units.

How to Keep Cool Without A/C
Sure, fans and using windows smartly can help a lot, but also check out these tips for when you really get desperate.

http://www.coolgreengadgets.com/2008/01/06/solar-powered-ac-is-genius/
One of the biggest Money and energy wasters finally got solar!SolCool Millenia has developed an ingenious air conditioner that uses solar power to power the A/C.The sunnier (or hotter) it gets, the more cooling power it has…thus, when the sun rises you have more cooling power . But just in case, the SolCool Millenia A/C is equipped with a 24 hour battery for those needing it at night.

Air Force Base Dyed Green
The largest employer in Abilene, Texas - and a model among military installations around the country - has reduced both its energy and water usage with various enviro-friendly approaches. By using graywater, Dyess Air Force Base has cut the city's water usage by 2 percent. With the installation of skylights, dimmer switches and by just turning off the AC, the base has reduced its electrical consumption by about 20 percent.

Auto air conditioning - greenhouse villian a white knight?
As of Jan. 1, 2011, air-conditioning systems for all new European-made vehicles must begin the switch to a refrigerant other than the current formulation, known as R134a - a mix that has 1410 times the global warming potential of carbon dioxide.