We cover all areas of air conditioning:

• Design

• Installations

• Maintenance

• Commercial

• Domestic

• Accredited

We cover all areas of air conditioning:

• Design

• Installations

• Maintenance

• Commercial

• Domestic

• Accredited

We cover all areas of air conditioning:

• Design

• Installations

• Maintenance

• Commercial

• Domestic

• Accredited

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The principle of air conditioning always comes down to the same:

absorb energy in one place and release it in another place

The process requires an indoor unit, an outdoor unit and copper piping to connect both. Through the piping the refrigerant flows from one unit to another. It is the refrigerant that absorbs the energy in one unit and releases it in the other. Cooling mode

1 Indoor unit

A fan blows the hot indoor air over a heat exchanging coil through which cold refrigerant flows. The cold refrigerant absorbs the heat from the air and cooled air is blown into the room.

2 Copper piping

The refrigerant circulates through the units and the piping and takes the heat from the indoor unit to the outdoor unit.

3 Outdoor unit

Through compression, the refrigerant gas is heated and its boiling point increases. In the outdoor unit the obtained heat throughout compression is released to the outdoor air by means of a fan which blows the outdoor air over a heat exchanging coil.

4 Refrigerant

The liquid refrigerant flows back to the indoor unit.

5 Indoor unit

Back in the indoor unit, the refrigerant is decompressed and thus enabled to extract heat form the indoor air.

The Refrigerant Cycle

An air conditioner works similar to a refrigerator. The refrigerant flows through the system, and changes in state or condition. There are four processes in the 'refrigeration cycle'.

1 The compressor which pumps the refrigerant around the system, is the heart of the air conditioner. Before the compressor, the refrigerant is a gas at low pressure. Because of the compressor, the gas becomes high pressure, gets heated and flows towards the condenser.

2 At the condenser, the high temperature, high pressure gas releases its heat to the outdoor air and becomes subcooled high pressure liquid.

3 The high pressure liquid goes through the expansion valve, which reduces the pressure, and thus temperature goes below the temperature of the refrigerated space. This results in cold, low pressure refrigerant liquid.

4 The low pressure refrigerant flows to the evaporator where it absorbs heat from the indoor air throught evaporation and becomes low pressure gas. The gas flows back to the compressor where the cycle starts all over again.

In case of a heat pump the cycle can be reversed.