The LG wall air conditioner can be used as a heater, according to the official LG website lg.com. The LG AS-W246C2U1 model has this feature and is equipped with triple filters, including an antibacterial air filter.
Not all wall air conditioners are equipped with hot and cold air circulation features as the LG AS-W246C2U1 model. This model has virus and allergy filters too. It is also an energy saving air conditioner and uses up to 66 percent less electrical power. These air conditioners have other features, such as sleep mode, auto restart, auto clean, dehumidifiers and night glow on the remote control. It is a split AC unit with a very low noise level.