A portable air conditioner’s primary job is to pull in room air, chill it to the correct temperature by removing heat, and then circulate the cooled air back into the area. The basic AC components involved include: The evaporator coil and the refrigerant are responsible for cooling the air...
The blower motor forces air upward (recall my air handler is an “updraft” or “upflow” type) through the furnace and air conditioner evaporator coils. The Heat and Cool functions of the thermostat ensure that either the furnace or the air conditioner operate, but never both at the same t...
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Refrigerators and freezers consist of two basic components: a condenser coil and an evaporator coil. A liquid coolant is circulated through these coils by a compressor and a motor. The refrigerant liquid is cooled in the condenser; it then flows to the evaporator. At the evaporator, the air ...
Conducting a Continuity Test on an Evaporator Fan To conduct a continuity test, you need a multimeter set to measure resistance in the 1-ohm (Ω) to 100-Ω range. Set the fan on a benchtop and locate the two power terminals, which is where the wires connect to the fan coil. Touch on...
The high-pressure liquid refrigerant flows from the receiver-dryer through the expansion valve, where it is allowed to expand. This expansion reduces the pressure on the refrigerant, so it can move into the evaporator. The valve senses pressure and regulates the flow of refrigerant, which allows...
Dirty or clogged condenser and evaporator coils reduce AC efficiency, which ultimately leads the AC to use up unnecessary energy that affects the electricity bill. Servicing these coils will ensure higher system performance and prevent from using more energy and operate the way it is supposed to be...
As the air passes over the coils, it absorbs the heat from the refrigerant, causing it to cool down and condense into a high-pressure liquid. Step 4: Refrigerant Expansion The high-pressure liquid refrigerant then moves to the expansion valve, which controls its flow into the evaporator coil...
As the compressor starts, it draws in the cold refrigerant gas in liquid form as it leaves the evaporator. Refrigerators use a type of refrigerant gas that turns into a liquid at very cold temperatures: -15.9 degrees Fahrenheit. The compressor then puts pressure on the gas — compressing it....
A liquid refrigerant is pumped through an evaporator coil of tubing. The liquid expands as it moves through the coil, changing to its gaseous state as it absorbs heat from the air surrounding the coil. A blower then pushes air around the cooled coil through ducts and into the house. The ...