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7 Components That Makes Your Unit Work After an AC Repair in Harlingen

Everyone has an understanding as to what an air conditioner does, but have you ever questioned how it worked? We want to share seven components of an AC repair in Harlingen that make your unit function. No matter what area of your AC that needs repair, Polar Air offers financing options for your peace of mind.

The Broken-Down Process

An air-conditioner is typically comprised of several major components:

  • Thermostat
  • Air ducts
  • Evaporator
  • Blower
  • Compressor
  • Condenser
  • Expansion valve


These mechanisms work collectively with your home thermostat to give you your desired air temperature. 


The thermostat is the control panel that submits signals to your HVAC system of what it is needed to do. This is where you select the wanted air temperature for your residence or commercial building. 

Air Ducts

Air ducts are conduits that help disperse air into different locations in your house. Ducts and vents transmit air through filters ensuring you clean breathable oxygen.  

It is imperative that you clean or replace your filters every ninety days or so to prevent airborne pathogens and bacteria’s deriving from your dirty vents. If your vents remain untouched this may cause strain on your ventilation and an increase on your energy bill. Get your vents cleaned every few years for the best possible air quality. 


An evaporator coil works oppositely to your condenser in which it absorbs warmth from inside your home. This is located near the unit’s fan and functions as a converter for your refrigerant from a liquid state to gaseous. 


The blower is what sends the air throughout the house. This function helps push the air through the airducts. This is what helps move your fan.

Condenser and Compressor

A condenser coil work hand in hand with the evaporator to convert the refrigerant back in to a liquid state when the compressor compresses the gas. 

  • Both the evaporator and condenser coils are made out of copper making it perfect conductors for heat. 
  • Refrigerant is diffused as a gas as it enters the compressor where it is compressed, thusly increasing the temperature of the refrigerant.
  • Then, this drives the liquid into the HVAC unit.


Expansion Valve 

When the refrigerant gets pushed out of the condenser coil and releases its heat, it’s still far too hot to return to the evaporator coil. The expansion valve is the one to thank for the constant cycle of transporting cold refrigerant back into evaporator coil just gather more hot air from your home. 


The condenser fan pushes the hot air out and prevents the entire air conditioning system from overheating, especially when the grueling sun makes it that much hotter.

What’s the Difference Between a Blower, Compressor, and Fan?

  • Compressors are a mechanism that compresses gasses or liquids by putting them through high pressure. They typically compress more gases than liquids.
  • Blowers moves air around, and mostly used for blowing air. This increases and decreases speed of gas passing through the turbine. 
  • Fans are initiated by a motor to rotate and push fluids or air. This is the most helpful role for chilling and drying. 


Woman laying on couch searching for a AC repair in Harlingen.

Contact Polar Air for More Useful Info!

Do you prefer having an HVAC system or just as AC unit? There are some advantages, but regardless it’s important to keep proper maintenance. Contact Polar Air to help you conduct inspections, AC replacements, and AC repairs in Harlingen. Call (956-702-7375, for inquiries on repairing a unit, and how to get a free quote! We offer low prices and plans to fit your budget.

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