The following video gives you a clear idea of how the components of a central air conditioner work to cool down your house. In addition, a number of Lennox air conditioners work. And since some of the units are ENERGY STAR ® certified, they may even qualify you for federal energy tax credits and local utility rebates. A central air conditioning unit uses a split system that regulates air through ducts installed in your home. The refrigerant then passes through an expansion device that converts it to a low-pressure, low-temperature liquid, which returns to the indoor coil. Offering industry-leading efficiencies of up to 26.00 SEER, Lennox air conditioners can help you save hundreds of dollars every year in utility costs. If you have a large home & wish to cool multiple rooms at once, then this type of air conditioning is best suited for you. There it jettisons the heat through coils or thin metal “fins.” A fan in the compressor also helps to dissipate the heat. As a vapor, it travels to the outdoor compressor, which pressurizes it and moves it through the outdoor coil. The refrigerant is especially cold when it begins to circulate through the indoor coil.Īs the air handler pushes warm air across the coil, the refrigerant absorbs so much heat from the air that it turns into vapor. One or more thermostats in the house serve as the controls for turning the cooling system off and on as room temperatures rise and fall. This refrigerant receives and releases heat as it raises and lowers in temperature, changing from liquid to gas and then back to liquid. This appliance pumps chilled air throughout the house through a system of air ductsoften the same system utilized by a forced-air furnace during the heating season. Refrigerant circulates through copper tubing that runs between the evaporator and the condenser. With a “package system,” all of the components are combined in a single outdoor unit that may be located on the ground or on the roof.Ī central air conditioner cools with an outdoor compressor and condenser coil connected to an indoor furnace fitted with an evaporator coil. The evaporator is mounted on or in the air-handling unit, which is often a forced-air furnace. Then the air is routed to air-supply ductwork through which the blower pushes it back to the rooms.īut how does the evaporator coil get cold in the first place? That is where refrigeration principles come into play.Įvery air conditioner has three main parts: a condenser, an evaporator, and a compressor. With a typical “split system,” the condenser and the compressor are located in an outdoor unit. This air is pulled through one or more filters, where airborne particles such as dust and lint are removed-in fact, sophisticated filters may remove microscopic pollutants as well. When the thermostat signals the air-conditioning system to lower air temperature, a whole sequence of events begins.įirst, the air-handling unit kicks on, drawing room air in from various parts of the house through return-air ducts.
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