Energy Star. 2 year In Home Warranty on full parts and labor on all LG air conditioners. This model has the feature No-Aging Plasma Heat Exchanger. LG has developed the new heat exchanger that there is no-aging on the surface of fin. It is the first time in the world. Back to nature with LG Air Conditioner! Whichcever model you choose,you can enjoy natural atmosphere whereever you are. LG Air Conditioners are created for people who value comfort,tranquility and cleanliness.