What is it?
Air conditioning (A/C) is simply the process of removing heat from matter. All matter above the temperature of 459°F contains energy in the form of heat. Heat always moves from hot to cold.
How does it work?
The function of the air conditioning system in your automobile is to improve upon the efficiency of this process of moving heat. To accomplish this, the A/C system uses three methods of removing heat from your car; Radiant, Conduction and Convection.
So how does this apply to your AC system?
“The heat in your automobile is blown across the evaporator coils using convection.”
“The heat is absorbed into the cool refrigerant (Freon, R-12, R-134a, etc.) inside the coils using conduction.”
“The refrigerant moves the heat to the condenser using convection.”
“This heat is absorbed into the condenser fins using conduction.”
“The heat then transfers back into the atmosphere using radiation.”
Other important components are necessary, the regulation of humidity and understanding how air movement affects our comfort. Therefore, in order for your air conditioning system to be most effective it must do the following three things:
“Remove heat from the interior of the vehicle.”
“Remove moisture from the interior of the vehicle.”
“Provide movement of air in the interior of the vehicle.”
Why isn’t my air conditioner blowing cold air?
Simply put, one of the primary components of your air conditioning system has broken down. A/C failure usually falls into one of three categories: “Component Failure resulting in a lack of sufficient refrigerant to remove heat from the car is the most common failure and occurs in about 60% of all A/C failures. This is usually caused by a leak and your Wilderness Auto Service technician can verify this by either using an electric leak detector or by injecting ultraviolet dye into the A/C system along with using an ultraviolet light. ” Electrical Problems represent approximately 30% of A/C failures. This can cause the compressor and fans to stop. Electrical failures could be caused by a failed sensor or the on board automotive computer.
“Improper Refrigerant Charge causes approximately 10% of A/C problems. Simply put, for a variety of reasons, the mixture of refrigerant to oil is out of balance. The best way to determine what is actually wrong with your system is to have a Wilderness Auto Service technician do a professional inspection with a written estimate.”