Frigidaire, LG Electronics, GREE, GE and Haier are all companies that manufacture air conditioners as of 2015. There are many other air conditioner manufacturers as well, including Honeywell, Pridiom, First America, Ramsond and Whirlpool.
LG produces four different types of air conditioners: portable, casement, window and wall units. The portable air conditioners are convenient to use, as they can be moved anywhere. LG advertises its casement air conditioners as being ideal for any horizontal or casement windows. In total, the company produces more than 80 different models of air conditioners, as of 2015.
These units are available in a variety of sizes, ranging from around 7,000 to 25,000 British thermal units, which is how an air conditioner's cooling capacity is rated. The models with the smaller BTU ranges are fine for smaller spaces, but a model with a higher BTU range is needed for larger rooms, according to Good Housekeeping.
A number of LG's air conditioners have the federal EnergyStar certification label, which can help homeowners save money on utility bills and possibly allow the home to be eligible for a utility rebate. Some of the models are available with other optional features, such as programmable timers or remote controls.