The Best Window Unit Air Conditioners The season for sweating is just around the corner, which means many of us will be looking to add an air conditioner. Now's the advisable time to pick one up, before retailers sell out during the apex of summer. New home goods review site, The Sweethome, has an exhaustive roundup and recommendations... The Sweethome narrowed their list of air conditioners units from thirty down to four 8,000 BTU units and three 12,000 BTU units, from LG, Frigidaire, Sunpentown, Friedrich, and Kenmore. Each was rated by the following  Ease of InstallationEase of UseAirflow ControlEase of MaintenanceCooling PowerPower UsageNoise LevelA very interesting note discovered during their  there was very little difference in the speed at which 8,000 BTU and 12,000 BTU air conditioners cooled down a room. So don't overspend on a larger unit in the hopes it will cool down a smaller room faster, you're just wasting energy. If you need help determining the size, direct yourself over to Haier's AC SmartSelector page: