Refrigeration has been with us a long time now. It keeps our food fresh and homes comfortable. Automotive refrigeration more commonly known as air conditioning allows us to drive in comfort even on hot Summer days. When driving at highway speeds your A/C actually increases mileage because of reduced wind drag when the windows are closed. So enjoy the comfort of air conditioned driving.
Without getting too technical, the A/C in your car actually removes heat from your car thereby producing the cold air that blows out the vents. That's why it takes a few minutes after you turn the A/C on for the air to cool to a comfortable temperature.
Your air conditioning system is made up of a compressor, a condenser, an evaporator, refrigeration lines and several valves and sensors that help control the whole process. These parts circulate a special chemical called a refrigerant. This refrigerant, also known as R-134a, changes from a gas to a liquid as it circulates through your A/C system. When it changes from a gas to a liquid and back again it can absorb and release a lot heat. When the heat is released the R-134a gets very cold and you feel the nice cool air blowing from the vents in your car. R-134a is a refrigerant that replaced R-12. R-12 was outlawed in the 1990's after it was discovered to be a causing depletion of the Earth's ozone layer.
How do you know if the A/C in your car isn't working right? The first thing you will notice is that the cool air isn't as cool as you expect or there is no cooling at all. You may also hear noises when you turn the A/C on indicating some kind of mechanical failure. When any of these symptoms appear it's time to give us a call at Roy's Pro Auto and get it fixed. We have all the equipment, tools and know how to keep your A/C system running properly for your driving comfort.