The word "airco" is a shorter way to say "air conditioning," which refers to a system that cools and dehumidifies the air inside a room or a building. Full definition
There is no economic case for airco and it is environmentally damaging. (phdinparenting.com)
Apart from the environmental and health case against airco, it also makes it impossible to dress for outings that involve being both outside and in. (phdinparenting.com)