People are kept in comfortable temperatures year-round through ACs and evaporative coolers. Refrigerants are used to condition the air using ACs. This is true for all types of climate-controlled environments. The units include devices for cooling purposes only and a heat pump for both heating and cooling. Misters and evaporative coolers humidify and cool the air in a hot climate. Accessories associated with the maintenance of AC’s are employed to maintain and repair AC’s when needed.