To understand what makes Gen III ducted air conditioning so advanced, you need to understand how conventional ducted air conditioning systems are designed.
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Air conditioning works by circulating cooled or heated air in your home. To achieve this, air is drawn through two coils, one inside your home (the evaporator fan-coil unit) and one outside (condensing unit). These two units are connected by refrigerant pipes. The refrigerant is pumped in a loop between these two units. |
In cooling mode the compressor, located in the outdoor unit, compresses the low pressure refrigerant gas making it heat up. This high pressure hot gas is then circulated through the outdoor condensing coils where a fan dissipates the heat in heated coils, to cool down the refrigerant changing it from gas to a liquid under high pressure. This high pressure cool liquid travels to the indoor fan-coil where it passes through an expansion valve. As the pressure drops the refrigerant begins to evaporate into a gas. Heat is needed for this process, so warm indoor air is drawn through the coil where it is cooled, and then the cooled air is circulated through the home. |
| Condensation on the indoor coil may occur as heat is removed when the air is passed through the indoor coils. This water is collected in a tray under the unit and piped outside. Finally the low pressure refrigerant gas travels back to the outdoor unit to repeat the process. In heating mode, the air conditioner operates in heat pump mode where the indoor coil becomes hot, and the outdoor coils become cold. On very cold nights in winter, ice often builds up on the outdoor unit coils. | When this occurs, the unit will automatically put itself into a defrost cycle, producing cool air from the vents for a few minutes. You will also notice a puddle of water around the unit following defrosting. |