http://www.airconenergysaver.com/faqs.html
原廠說明, 不過台灣的是否該廠製造存疑

How is an Air Conditioners size determined?

In accordance with Industry standards, dependent on geographic location, most Air Conditioning units are sized to extreme load conditions. Items considered are worst-case outdoor conditions, maximum internal heat loading, with a margin of safety added on. This result is then applied to the closest next size larger available air conditioning unit that is most often chosen for installation.


Therefore, except when conditions require maximum output, the majority of its hours of operation are spent operating with excess capacity; oversized for the duty it is performing, while wasting energy


裝設時為適應極端狀況,選擇的冷房能力常超出需求....
How does the Aircon Energy Saver adjust this overcapacity?

The Aircon Energy Saver turns the compressor off (largest electrical load) when its program senses overcapacity. (Saturated air unable to accept further cooling).
The air handler fan continues the cooling circulation. Upon sensing the calculated point that will maintain uninterrupted cooling the compressor is re introduced, thereby adjusting the output of the Air Conditioner to meet the demands of existing conditions and the set point of the thermostat, therein re-sizing the unit to meet demand. The result is a savings of energy without sacrificing comfort.

提前關閉壓縮機調降冷房能力
Why doesn㦙 the thermostat do the same job?

The thermostat maintains a temperature at which it is located, within certain tolerances, and cannot regulate the cooling applied to the area serviced by the Air Conditioner.

The oversized Air Conditioning system can quickly satisfy the thermostat set point. By rapidly satisfying the set point the system overshoots the set point.
Thermostat design set point allows for overshoot prior to switching the unit off. In many cases the short run time does not allow for proper dehumidification.

The Aircon Energy Saver modulates the output of the Air Conditioner in accordance with the demands of the area cooled so the overshoot of the thermostat set point is minimal while maintaining a more energy efficient cooling period.
避免過冷而浪費電...