How Air Conditioners Work?

As the summer days get hotter and nights Get uncomfortably warm, we turn to our Air Conditioner for help, access humidity in the air reduce our body’s ability to cool itself through perspiration. Many Philadelphia, PA residents and business owners rely on Air Conditioning units to provide indoor comfort when the outside air is unbearable but few ever wonder how do these metal boxes and spinning fans can change the air temperature and quality  

How do Air Conditioners cool?

HVAC Philly How air conditioner work

Let us start by stating the fact that when you feel the cold air coming out of your wall, ceiling or floor vent you are actually feeling air which lost some of its heat, your home Air Conditioner transfers your indoor air heat to the outside air through a mechanical process that starts at your wall thermostat. Air Conditioners also dehumidify the air while removing or transferring the heat by picking up the access humidity at the evaporator coil.

 When the thermostat is set for a lower temperature than room’s temperature the circuit board at the indoor heater or air-handler sends a signal to the outside condenser through the two thin wires between the indoor and condenser units asking it to turn on, the condenser starts pumping liquid refrigerant through the thinner copper line to the evaporator coil attached to the indoor unit and passing through a metering device which drops the pressure and turns it into low pressure vapor, evaporator coil tubes are now cold , as the blower motor turns on and pushes returned air through the cold coil and then your vents you start to enjoy cooler and less humid air as the cold coil tubes condensate air humidity into water which leaves the coil through a PVC drain line.

Air Conditioning system maintenance tips

If you decide to handle your own AC maintenance you should start with replacing your air filter as this simple task is most essential to AC system performance, you can follow with cleaning out your indoor and outdoor coils, other maintenance steps require a certified experienced technician as they require refrigerant handling and electrical knowledge.  


Did you know

  • Air conditioners use about 5 percent of all the electricity produced in the U.S., costing homeowners more than $11 billion a year in energy costs.


  • Replacing clogged air filter with a clean one can lower your air conditioner’s energy consumption by 5-15 percent.


Whether you’re looking to save on cooling costs with your current air conditioner in Philadelphia or you want to upgrade to a more energy-efficient model visit our website or contact us at 215-725-611



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