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Tag: AC Trouble

Warning Signs That Your Air Conditioner Needs Extensive Repair

In extreme temperatures, we are all thankful for our vehicles’ air conditioning. As spring approaches, the weather is expected to get warmer, and the need for air conditioning in your car will be necessary. It is an excellent time to ensure that the air conditioning works correctly to avoid any problems later. Following are some warning signs that your air conditioner needs extensive repair.

  1. There is no air coming from the air conditioning vent.

If your air conditioning vent is throwing no air despite being on full blast. This is a problem you should be looking into. Multiple reasons lead to this problem, like blown up fuse, failed blower resistor, or blocked air intake. Get it fixed as soon as possible to avoid any air conditioning failures down the line.

Related: “Your Car AC Isn’t Cooling Enough? Here’s What You Need to Know!”

  • Air conditioning unit is making strange noises.

This is one of the problems that drivers face everywhere. Strange unexplained noises from your air conditioning vent are a warning sign to get it checked and repaired before a complete unit failure. The issue could indicate an obstruction such as leaves or other debris in the system, worn bearing, failed compressor clutch, blower motor, and principal component failure.

  • Air conditioning unit is emitting foul smells.

A weird odor comes through the vents of your car shortly after you switch on your air conditioning. It shows that it needs some repair. The smell is likely due to a dirty cabin filter or mold growth. Inspect your cabin filter and get it cleaned thoroughly to avoid emitting foul odors.

Related: “Ways to Maintain Your Car’s Air Conditioning System This Summer”


It is essential to keep your car in the best shape to avoid costly repairs. Car maintenance can be a daunting task, and sometimes we may skip it for multiple reasons. For all of your auto maintenance needs, contact H.W. Automotive Inc. Our highly trained mechanics will ensure that your car is in good condition. Call us at (405) 702-4098 to schedule a service or visit our website to learn more about our services.    

3 Major Chemical Reactions at Work In a Car’s A/C System

How does a car’s air conditioning system work? Is it virtually the same as all other A/C systems? When you put your hand on those vents, how is the air so perfectly wintry? Amazingly, there are many phenomena that function consistently every time you crank up that A/C. Learn some of the major ones below!

1. Compression

Before any of the cooling occurs, a whole lot of compression must come first. An A/C compressor typically takes a refrigerant and compresses it so that the gas is under high pressure. Once this high-pressure refrigerant moves through the high-pressure tube, it comes in contact with the condenser. Because A/C compressors are often powered by engine-accessory belts, a worn-out belt can interfere with the functionality of the compressor.

2. Condensation

Many of us know condensation as a main player in the hydrologic cycle. In an automobile’s A/C system, condensation occurs inside the A/C condenser, where the gaseous refrigerant is exchanged with the warm cabin air. Located between the grille and the radiator, the A/C condenser should be kept clean; a clogged condenser or a malfunctioning cooling fan can cause a decline in the coolness of the air. A leaking condenser would mean the loss of the refrigerant, and therefore a less effective exchange between the cool and the warm air.

3. Evaporation

After passing the high-pressure tubing, the refrigerant (in liquid form at this point due to condensation) comes across the orifice tube (also called a thermal expansion valve). Because the orifice tube permits only a little bit of refrigerant to pass at a time, the pressure is relieved, and the refrigerant transforms back into a gaseous form. This dramatic pressure reduction cools the refrigerant. And as the refrigerant evaporates back into gas form due to the hot air, the heat from the passing air gets trapped and the air becomes chilly.


Today, achieving the perfect arctic cool is possible with a simple turn of a knob or a press of a button; contrary to its effortless appearance on the outside, however, the A/C system’s inner workings are quite intricate. To find out about more about automotive A/C systems or discuss any troubles you have with them, ask away at H.W. Automotive Inc.!

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