The Central Air Condition System uses the refrigeration principles. It has three main parts, namely: a compressor, condenser, and an evaporator. The system distributes conditioned air through a network of ducts connected to an air handler or furnace located in places that are out-of-the-way, such as attics or basements. It pumps out chilled air in different rooms or areas of the house or building through a system of air ducts which is most of the time, the same system utilized by a forced-air furnace used for heating. As room temperature rise and fall, one or more thermostats in the house turn the cooling system off and on, and a whole sequence of events begins. With the air-handling unit kicking on, it draws in room air from various areas of the house through return-air ducts, and air pulled through a filter, which removes particles such as lint and dust. After which, the air is routed to air-supply ductwork, carrying the air back to the rooms.
– The Split-Type Air Conditioner units are the most common central air condition system that can be found in homes. This is evident by the metal case found outside the home which has a condenser coil which releases the heat, and the compressor which pumps the refrigerant between the two coils. The indoor component of the air con is connected to the outside via a network of ducts. A blower circulates the cold air that the air con produces. This is said to be the most economical air con in the market because with a central furnace, it can share the ductwork used by the heating system.
– The Packaged Central Air Conditioner unit is ideal for homes and buildings. It is often placed on a roof or a concrete slab near the foundation. The single unit is a combination of the evaporator, condenser and compressor, and ducts running through the exterior wall or roof draw air from inside the house or building, and return cooled air indoors. When this is combined with a set of heating coils or a natural gas furnace, there is no need for a separate furnace inside the structure.
When buying a new central air conditioning system, the first thing you should consider is the size and the cost of the air conditioner. You might think that buying an air conditioner of a smaller capacity might cost less, but the air conditioner will have to work harder and won’t be able to work properly if the capacity is not appropriate for the house or building. This goes both ways, a bigger capacity air conditioner is more expensive but it does not mean it will work perfectly for a house that does not need that much in terms of cooling energy as the air conditioner will just cycle off and on frequently, and will not dehumidify the air properly. If you do not have any what capacity of air conditioner is needed for your home or building, an air conditioning contractor can provide you with the correct size needed.
The energy efficiency of the air conditioning unit must be considered especially at this time when the high cost of energy can burn a hole in your pocket. It is very costly to operate an air conditioner but you can still enjoy the coolness it emits whenever you want to, or even daily if you take into consideration the ability to convert energy into cooling in the most cost-effective way. The SEER (Seasonal Energy Efficiency Rating) rating of an air condition which is posted on every unit, serves as a guide on the energy efficiency of an air con. Remember the higher the number the more efficient the unit is, and cost of operating the air con is less.
There are also a number of energy saving features you will have to look for, such as large coils in the unit for heat transfer efficiency, greater than 11.6 high temperature rating, and a thermal expansion valve which translates to high-efficiency operation when the weather is at its hottest, and a variable-speed blower which can help in reducing electricity consumption.