FAQs for Energy Saving Controls

How are AC Units sizes 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.

How does the Aircon Energy Saver adjust this overcapacity?

The Aircon Energy Saver Control 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.

Doesn’t the thermostat do the same job?

The thermostat is designed to maintain the room temperature set point. The thermostat does not analyse the performance of the hardware and will run the compressor until sufficient cooling has been produced to satisfy the required room temperature. However this normally results in overshoot of the set-point.

The Aircon Energy Saver does not override the thermostat. It modulates the output of the Air-Conditioning unit preventing overshoot of the thermostat set-point whilst achieving an efficient cooling cycle by utilizing the latent cooling characteristics of the air conditioning unit.

What effect does the Conditionaire AirCon Energy Saver have on room temperature?

None. The thermostat dictates the required room temperature, the AirCon Energy Saver only removes the inefficient wasteful element of the operation.

Note: Not only does the room temperature remain unchanged, there is a further benefit. The AirCon Energy Saver will lessen the dryness of the air due to moisture being removed during the cooling process. This results in a healthier more comfortable working environment.

Surely, the interruption of the run times has a detrimental effect on the compressor?

The AirCon Energy Saver does not compromise the manufacturers minimum run time requirements which is an in-built safety feature. The AirCon Energy Saver is programmed to prevent short-cycling within the software. The result is a compressor that will actually run less and reduce wear and tear.

Where does the Conditionaire Aircon Energy Saver work?

The AirCon Energy Saver is compatible with most residential and light commercial units such as AC Package Direct Expansion (DX), Split Systems, Window Units, PTAC Units utilizing a Thermostat or Sensor.

What is the theory behind the Conditionaire Aircon Energy Saver?

The thermodynamic efficiency of the cooling cycle is improved by cycling the compressor.

Compressors run most efficiently when fully loaded. In a static condition the refrigerant gas is at its highest density. Upon start up the compressor is fully loaded and the first minutes are the most efficient due to the higher evaporator coil temperatures accelerating the heat of vaporization process, resulting in a lower specific volume. This denser gas results in a higher compressor volumetric efficiency and a higher system Coefficient of Performance(COP).