car air conditioner blowing hot air sometimes

The next thing to check will be the indoor blower. This is because refrigerant evaporates into a gas once its outside the AC system.

5 Reasons Why Car Air Conditioner Not Blowing Cold Air When Idling

Here are 6 possible reasons your air conditioner is blasting hot air together with solutions for each one to help keep your car cool.

. You can check for puddles. Since the AC compressor is driven by the engine it doesnt pump as much refrigerant when youre at a stop or driving slowly. Get your system refrigerant level.

If your car is blowing hot air instead of cold your refrigerant might be leaking. When you set the AC at a specific temperature the actuator controls the opening and closing of the airflow. This is only applicable to new or newly wired air conditioners.

When your car lacks refrigerant the gas is exposed to hot air for too long. 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. Why is Your Car AC Blowing Hot air.

If your car has a cabin air filter and you think you might have an evaporator freeze up problem start by checking the condition of your cabin air filter. Any time you lose refrigerant from your cars AC system that leak allows air and moisture to enter. A car AC blowing hot air is often the result of a refrigerant leak.

This typically happens if the engine is too hot so be sure to check your cars temperature. The car AC control switch turns ON and OFF the air conditioner. 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.

Here are common reasons your car air conditioner is blowing hot air. The bigger issue is with new thermostats. A mess which may lead to some unusual things like hot air coming from your AC unit.

1 Year12K Mile Warranty. Make sure that you have 24 volts across those wires. If the air conditioner is for cooling only the unit will usually have only two wires going to the condenser unit.

If your air conditioning unit is leaking refrigerant it has a greater chance of blowing out hot air. If this isnt the case the next car air conditioning troubleshooting tip is to see if there are any leaks. Available 7 Days a Week.

Even if a system is just slightly low on refrigerant it would also cause the system to start blowing warmhot air. If the system is low on refrigerant it will show up as AC blows warm at idle and blows colder when the engine is running at higher RPMs. Another common cause for the failure of AC to blow cool air.

There is a part called AC actuator in the anatomy of an AC system. A fault temperature sensor can affect the way the temperature settings work. If its hot in a situation of car air conditioner blowing hot air then its an engine problem.

2 cause of AC blows warm at idle. Certified Mechanics Fix Your Car in Driveway. It would stay cold for a few seconds then blow hot air.

AC Blows Hot or Cold Air on One Side with Clicking Sound. The definitive way to diagnose a refrigerant. If this is the case contacting your air conditioning company for a.

None of the other AC components will function correctly without proper refrigerant levels. I fix the AC in this 2010 Ford Fusion. The most common issue that we see roll into our shop when the car AC is cold and then hot in Chino CA is that the evaporator has not been functioning as it should.

Moisture in the AC system can also cause an AC blows cold then warm condition. An AC clutch is not the same clutch as found in manual cars to shift gears. Like having a blocked condenser having broken cooling fans can cause a lack of cooling at your condenser and could cause your car AC blowing hot air.

If this is the case be sure to take it into a mechanic as quickly as you can. Refrigerant Leakage Unlike oil or antifreeze leaks you wont see a pool of liquid underneath your car if there is a refrigerant leak. Use a multimeter to ensure that the AC is receiving the correct amount of volts.

Ad All Makes Models. In this case the replacement of the AC. Other possibilities include a faulty compressor broken cooling fans or an issue in your electrical system.

Its working is quite similar to it - It has to engage to start rotating to get energy from the engine just like the gear clutch which has two rotating shafts. The head unit or HVAC controls if they are not. A faulty AC control switch can be the reason for car ac blowing hot air.

If the temperature sensor of your car is not working your vehicle will have a hard time picking up particular information and thus can cause your cars AC to blow hot air on the passenger side. Refrigerant is a liquid that circulates through your cars AC system expanding and contracting as it removes heat and humidity from the cabin. 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.

What this means is that the evaporator in your car can ice over which means it wont work properly. A refrigerant leak is a common problem that may ail your unit following heavy use. Your AC system is low on refrigerant.

Your car AC is actually a heat exchanger that recirculates warm air from inside the cabin and replaces it with cold air. Thankfully in this guide we will review each of these car AC problems in detail. Another common cause of car AC blowing hot air is incorrect thermostat settings.

The fans could actually be broken like a burnt out motor bad mount a chipped fan blade or they could simply have an electrical problem like a blown fuse or burnt out relay. 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. If your new air conditioner is blowing hot air there is a chance that the thermostat is not wired properly.

I show you how to determine if its the actuatorPLEASE CHECK O. The improperly wired thermostat is quite a mess. If you experience the symptom of the AC blowing hot or cold air on one side but not the other and its accompanied by a clicking or ticking sound it probably means a gear in the temperature blend door actuator is faulty and the actuator needs to be replaced.

In most cases its due to a loss of refrigerant in the system. This results in hot air circulating through your AC vents. When this actuator fails it no longer controls the opening and closing of the door and thus the ac blows hot air in car.

If your thermostat is calling for. No Need to Step Outside. Head Unit Or HVAC Controls Not Working.

Your vehicles AC is electrically powered and the most common reason for car air conditioning that blows hot air is an electrical system malfunction. The refrigerant is a liquid that flows into the evaporator changing into a gas as it absorbs the heat from your cars air.

Car Ac Stopped Working Suddenly Not Blowing Cold Air Road Sumo