The top brands of window air conditioners of 2015 are Frigidaire, Keystone, SPT, LG, Danby and Friedrich, according to Top Ten Reviews. Meanwhile, Amazon.com's top 20 best sellers in window air conditioners as of March 2015 listed brands that include Frigidaire, SPT, Keystone and LG.
Based on the best window air conditioners listing by Top Ten Reviews, out of the 10 models that are included in the list, three of these are Frigidaire brands. These models are FRA052XT7, FRA126CT1 and FRA256SV2. The SweetHome also rated another Frigidaire unit, the FFRE0833Q1, as the best and most energy efficient window air conditioner. The LG LW8014ER comes in second place based on the same review.