Air conditioner units
There are different types of air conditioners and they range from units installed in a window, to units rolling around on the floor, to units mounted on a wall and central air conditioning. All the systems use the same five elements of an air conditioning system consisting of refrigerant, compressor, condenser, expansion valve, evaporator coil. They use refrigerant as the medium to transport heat from one component to the other. The refrigerant used has been altered because they found that it originally was responsible for depleting the ozone layer and therefore needed to be changed to an environmentally safe refrigerant known as R-134a.It is less efficient but has been approved for use. The units that are still using the old refrigerant -12 can be altered and fitted with the new refrigerant. The old type of refrigerant has now become more expensive and harder to find. One of the many types of air conditioners is a window air conditioner.
The wall air conditioner is known as a unitary air conditioner because all the components are in one compact box. These components are the compressor, the condenser, the evaporator and the other systems that have been made small enough to fit in such a system to cool a room. There are components found on the inside and there are the components found on the outside. The evaporative system is found on the inside and consists of the evaporator coil, the blower, the thermostat, filters and the funnel. The condensing unit is found on the outside and is made up of the condenser, the condenser coil and a fan to cool the coil.
PTAC systems are also known as wall-split air conditioning systems or ductless systems. These PTAC systems which are frequently used in hotels have two separate units, the evaporative unit on the interior and the condensing unit on the exterior, with an opening passing through the wall and connecting them. PTAC systems may be adapted to provide heating in cold weather, either directly by using an electric strip or by reversing the refrigerant flow to heat the interior and draw heat from the exterior air, converting the air conditioner into a heat pump. While room air conditioning provides maximum flexibility, when used to cool many rooms at a time it is generally more expensive than central air conditioning.
A portable air conditioner can be easily transported inside a home or office. They are currently available with capacities of about 1,800–18,000 W output and with or without electric-resistance heaters. Portable air conditioners are either evaporative or refrigerative.
In case the unit has a problem a technician will come when called and first carry out a diagnosis to determine the problem and he will then provide you with the quotation of how much the job will cost. He will start by checking the pressure of the system and if it is too high then one of the valves could be jammed or the system could be clogged thus using more energy when trying to operate. Then he will do a performance test before making any conclusions.