Evaporative air coolers, also known as swamp coolers, are more effective in environments with maximum relative humidity of 60% or less. Warm, dry air is important for more effective evaporative cooling and the temperature decrease will be greater in drier environments because higher evaporation occurs when the humidity is low. Evaporative Air Coolers produce moisture and can be used to increase humidification in a room.
If you live in a humid location, air coolers can still be a welcomed, energy saving cooling mechanism for your home by scheduling the air cooler to switch on at specific, drier times during the day. For example, during the hottest hours of the afternoon. Honeywell Air Coolers can also be paired with your air conditioner to extend air conditioner cooling so you can save energy by switching off the air conditioner and extending the cooling effect by switching on a Honeywell Air Cooler.