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How Does Central Air Conditioning Work

How Central Air Conditioning Works

The first modern air conditioner was invented by Willis Carrier in 1902 and was used primarily for printing purposes. The controlled temperature and humidity maintained consistent paper dimensions and ink alignment and also helped promote productivity in the workplace.

By the 1940s and 1950s, air conditioning applications expanded to cars and homes. Residential window units surged with 1 million units being sold in 1953 alone. While many people still rely on window units, more sophisticated air conditioning systems, such as central air conditioning, are commonplace. And although many homes are equipped with a central air conditioning system, few know how these devices work. This easy guide, will give you a quick rundown on the functionality of one of the world’s biggest conveniences.

The Condenser Unit

Central air conditioners essentially “begin” with the condenser unit. Located outside of the home, the condenser contains a fan, a compressor, and refrigerant. The compressor works to pressurize the refrigerant to the point where it gets hot. The hot refrigerant cools as the heat escapes when it is pumped through the condenser fins. The air then enters the refrigeration lines as a mist before making its way to the inside of the home.

The Evaporator Coil

The refrigerant is pumped into the evaporator coils, often located on top of the furnace inside the home. A blower in the furnace transports the warm air inside the home over the cold evaporator coils, which in turn makes the air cool. The warm air is pumped outside while the cool air is pumped into the home via air ducts.

The Thermostat

The thermostat is an important part of the air conditioning system. It allows the occupants to control the temperature inside the home. In a home with central air conditioning, the thermostat typically has a switch for heating and cooling, as well as an auto-cooled function.

The user sets the thermostat to a particular temperature (i.e., 74 degrees) then switches the thermostat to the cooling setting. From here, thermostat senses the surrounding temperature. If the ambient temperature is above 74 degrees, the thermostat sends an electrical signal to the cooling system to turn on. The cooling system will stay on until the ambient temperature drops back to 74 degrees, and then it will shut off.

Call the Professionals at Quick Servant

If you live in the Delmarva area and are in need of any HVAC services, give the professionals at Quick Servant a call today. Our team of experienced technicians provides repairs, replacements, maintenance and more. Contact us if you have any questions, or schedule an appointment online.