car ac blowing hot air suddenly

6 Common Causes Of Air Conditioner Blowing Hot Air 1 Low Refrigerant Levels Are The Cause Of AC Blowing Warm Air 2 Faulty Compressor Leading To AC Blowing Hot Air 3 Clogged Filters Not Dirty Can Cause AC To Start Blowing Warm Air 4 Clogged Expansion Valve Causes Hot Air Coming From AC 5 Power Issues. Why is My Car Air Conditioner Blowing Hot Air.

Car Ac Not Working Here S 5 Ways To Diagnose The Problem

Low car AC charge causes evaporator freeze up and low airflow A low system charge can cause the evaporator coil to so cold that it freezes the condensation on the evaporator fins.

. The most common cause of an AC system blowing warm air is a lack of refrigerant though you may also have a problem with your condenser. Defective Compressor Clutch 5. Top 8 Reasons There is a Refrigerant Leak The Condenser is Blocked or Clogged or Broken Problems with the Electrical System Bad or Broken Compressor Clogged or Dirty Cabin Air Filter Broken or Faulty Cooling Fans The AC Compressor Clutch is Bad The AC Expansion Valve is Faulty.

However one day the system will have lost enough gas that it no longer functions. You may not even notice the change. Thankfully in this guide we will review each of these car AC problems in detail.

If your car is blowing hot air instead of cold your refrigerant might be leaking. Its function is to circulate refrigerant through a series of Onlines that allow it to remove heat from your vehicles cabin. Losing refrigerant is a natural phenomenon with most vehicles losing as much as 10 of their total freon annually.

Faulty AC Control Switch 10. Worn Out Compressor The compressor is the heart of your vehicles air conditioning system. Heres how you can diagnose why your car AC suddenly stopped working.

Blown Fuses And Tripped Amp Breakers. This refrigerant system is of high pressure and it can reach 15 bars when the car is running. Moisture In The AC System 2.

9 Causes of Car AC is Not Blowing Cold Air 1. Empty AC System Your AC system is filled with an ac refrigerant making sure the whole system is working correctly. A Corroded Relay 9.

Even if a system is just slightly low on refrigerant it would also cause the system to start blowing warmhot air. Then the AC system shuts off the compressor and you get warm humid air. Even worse the acid can corrode the inside of your compressor spreading metal fragments throughout your AC system and causing widespread damage blockage and component failure.

Turn on the AC with the Car Running When car AC not blowing cold air happens try to diagnose this by turning your AC to fresh air Let the air blow out from the vents in the center of your dashboard. This is due to the compressor having to work harder to pump the refrigerant into the condenser. A bad AC control switch that will not make good contacts can also be the reason for the car air conditioner blows cold then warm then cold again.

This results in hot air circulating through your AC vents. There are two main causes of a car AC blowing hot air from a refrigerant leak- normal depletion and moisture. Car Air Conditioner Blows Cold Then Warm 1.

Similar to many other car parts the compressor can wear out over time. Thats when you notice that the fan is blowing warm air. Blocked Drain Pipe 3.

The permanent solution is to repair the leaks in your system. The refrigerant is a liquid that flows into the evaporator changing into a gas as it absorbs the heat from your cars air. A leak in your AC system could be causing the unit to blow warm air since there isnt enough refrigerant in the system to cool things down.

Another common cause of car AC blowing hot air is incorrect thermostat settings. A refrigerant leak can also occur in the 2. If these fans were to go bad then it would be much harder for the AC system to dissipate that heat.

Blocked condenser Broken cooling fans Broken condenser Low refrigerant due to a leak Electrical faults The condenser in your air condition system looks a lot like a. An AC clutch is not the same clutch as found in manual cars to shift gears. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicles condition and be able to make any appropriate recommendations.

Blocked Expansion ValveOrifice Tube 4. Earlier we mentioned that the condenser has fans that help dissipate heat. However with enough procrastination you can bring that to a level where your car AC starts to blow hot air.

We need to check AC pressures at this point because if the compressor is working and it is still blowing warm then we need to make sure the pressures are correct. The ice builds up until it blocks airflow. A Faulty Compressor Clutch.

5 Reasons Your Car AC Might Be Blowing Hot Air Electrical System Malfunction Low Refrigerant Level Bad Compressor Malfunctioning Condenser Broken Cooling Fans Recharging Your Cars AC System Car Air Conditioning Repair Cost The Bottom Line Frequently Asked Questions What is the best way to fix my cars AC. Conclusion Car AC Suddenly Blowing Hot Air. Why is my AC blowing hot air Check These Common Causes.

Other possibilities include a faulty compressor broken cooling fans or an issue in your electrical system. Low blower speed can also cause the refrigerant to freeze up in the evaporator. Let the air run at the highest speed for the fan.

The fact that they said it needed the valve tells me the pressures did not appear correct to them and they assumed the valve was the issue. The main role of a thermostat in a car air conditioner is to regulate temperature and prevent the HVAC system from overheating or cooling excessively. The fast and easy fix is to recharge your ac system and replace the refrigerant gas that your system lost.

Use a multimeter to ensure that the AC is receiving the correct amount of volts. When your car lacks refrigerant the gas is exposed to hot air for too long. Slow Blower Fan Speed 11.

Car A C Blowing Hot Air Don T Lose Your Cool Clark S Car Care