Why Is My Car AC Blowing Hot Air?

Turning off AC blowing hot air

Having your car air conditioner blowing hot air can be one of the most frustrating problems to have.  Whether it’s in your house or car, when you’re ready for the cool refreshing AC, hot air blowing in your face can be unbelievably frustrating.

Any time a system in your car malfunctions or breaks it can be frustrating.  Wondering what the repair bill will be like and worrying about whether or not it’s going to do further damage can be worrisome.  Even worse, many times going to the mechanic to have the problem checked can be difficult because it can be hard to know if they’re telling you the truth or just trying to make a quick buck.

This can be especially true with air conditioning systems.  They can seem so complicated and mysterious that repairs often can be extremely expensive and most of the time you simply have to take the mechanics word for how much work actually needs to be done.

Air conditioning system repairs are often expensive for a few reasons.  First, some of the components of your air conditioning system can be extremely difficult to get to.  With the exception of your condenser and maybe your expansion valve, the components of your air conditioning system are often tucked far in your engine bay, by the firewall or under your dashboard.  This makes them extremely difficult to get to if they need to be replaced or repaired which can make labor costs really add up.

Another reason AC repair costs can be so high is because anytime you have to open up the system, which would include replacing any component or hose, you have to safely remove all the refrigerant first.  The operating fluid, or refrigerant, in your AC system is contained at high pressures in the system so if you removed any component without removing the refrigerant first, you’d be met with an explosive blast of potentially harmful refrigerant.  When removing refrigerant, special equipment has to be used to properly contain the used refrigerant and make sure the system is kept clean and dry so it can function properly when recharged.  This equipment is expensive and can take some time to pull all the old refrigerant out.

Lastly, leak detection is very difficult in your AC system which can also increase labor costs.  Most air conditioning systems malfunction due to leaks in the system rather than bad components.  These leaks are often tiny and not able to be seen with the naked eye.  This requires special equipment or leak detection tactics to even identify where the leak is adding to labor costs.

If you find your car air conditioner blows hot air suddenly it can sometimes indicate the sudden failure of a component, usually in this case, the compressor.  If you’ve noticed a gradual loss of cooling power in your air conditioning system, it could be due to a clog, usually in the expansion valve or dryer, or due to a slow system leak.

If you suspect a slow system leak you should seal the leak quickly to avoid losing any more refrigerant.  Rather than spending a lot of time or money hunting for the small leak, you can install Red Angel AC Stop Leak in your system.  Red Angel AC Stop Leak will travel inert through your system searching for the leak.  At the leak point, Red Angel AC Stop Leak will form a seal stopping your loss of refrigerant.  Then, simply recharge your system with the correct amount of refrigerant and get your system back to blowing cool refreshing air.

Red Angel A/C Stop Leak is available at any of our partnering local auto parts stores like:

  • AutoZone
  • Advance Auto Parts
  • Bennett Auto Supply
  • CarQuest Auto parts
  • NAPA Auto Parts
  • O’Reilly Auto Parts
  • Pep Boys
  • Fast Track
  • Bumper to Bumper Auto Parts Specialists
  • S&E Quick Lube Distributer
  • DYK Automotive


Pictures Provided By:

ac.jpg – By sirawit99 – Licensed by Thinkstock Photos – Original Link

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