Air Conditioning Info

The range of systems available is vast. To ensure you have a system suitable for you we will send a surveyor to complete a full site survey and produce a detailed quotation with no hidden extras.

We obtain equipment from a wide range of manufacturers to design your bespoke system. Our service is free and will give a clear proposal and costing for any project.

Split Air Conditioning

This is the most familiar form of installed air conditioning. They are called ‘split systems’ because they comprise of an indoor unit (mounted to a wall, ceiling or floor), which re-circulates the air in the room, either cooling or heating to your requirements.

The indoor unit is linked to an outdoor unit (condenser), by a pair of small diameter copper pipes contained in an insulating jacket. The heat removed from the room is dissipated to the atmosphere by the outdoor condenser.

When heat is required, the system will run in reverse, taking heat from the outdoor condenser and transferring it to the indoor unit.

Multi Split Air Conditioning

This operates in much the same way as the 'split' system. The 'Multi-split' system enables a number of indoor units to be individually controlled from a single outdoor condenser.

• Up to four units can be operated in cooling only or heat only form.
  
  
• 'Multi-split' systems offer an ideal way to treat a number of areas whilst minimising the space required for outdoor units.

VRF Systems

Variable Refrigerant Flow systems are the most modern and sophisticated development of the 'split' systems.

• Up to 16 indoor units can be connected to a single large outdoor condenser.
  
  
• The outdoor condenser is constructed to respond proportionately to the number of indoor units operating, each being controlled for heating or cooling.
  
  
• Offering the ultimate in flexibility, individual indoor unit temperature can be changed independently, allowing personal choice as indoor and outdoor conditions change.
  
  
• VRF systems offer a year round solution to indoor climate control with unrivalled flexibility and energy efficiency.

Mobile Air Conditioners

Cordell have stopped selling mobile units as we feel that they do not offer a long-term solution. Customers often feel that they under perform and this does not suit either our customers or ourselves.

Cooling mode:

A special liquid called a refrigerant, which is sealed within the system, absorbs excess room heat. As the refrigerant absorbs heat from the room it changes into a gas and passes through small, copper tubes to an outdoor unit where the heat is released, into the atmosphere. The gas then changes back into a cold liquid, returning to the indoor unit where the air is fanned over it and out into the room. This cycle is automatically repeated to maintain the required room temperature

Heating mode:

Heat pump systems also allow the above cycles to be reversed. A heat pump extracts "free" heat from the outdoor air, even on the coldest days when the temperature may fall as low as -10 degrees Celsius and transfers the heat indoors. Heat pump units therefore avoid the need for a boiler and allow you to cool and heat with the same unit, with savings in costs and energy throughout the year.

Is it expensive to run?

The indoor section of the system contains a small fan and some electronic controls and has a power consumption comparable to that of a light bulb. The compressor, which is housed in the condensing unit, consumes a greater amount of power but only runs when the room requires heating or cooling. When a unit is sized correctly we would expect equal on and off periods. With this in mind we have built in a 50% diversity factor. The example is based on a 3.5kw split system with a power consumption of 1.2kw.