With little or no use during a long winter, the air conditioning system may have problems when re-engaged. Not an expert but ironically, in my experience, this is usually down to a fault in the cooling system. Thank you for sharing what we need to do if the air conditioner isn't blowing cold air. Poor maintenance of the air conditioning unit is the main culprit for car air conditioner not blowing cold air when idling.Checking the system from time to … Low Refrigerant Pressure . If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge your AC. The most common cause of window air conditioners not blowing cold air is a lack of adequate air flow. The compressor is not working properly. Though the AC not blowing isn’t exactly the issue, the stuffy air can make it feel like it is not blowing. 2. If you're activating it by pressing the button and setting the temperature to cold and it's not blowing cold air it could be a few things but it's most likely that the AC system is out of freon and it needs recharged. Slow refrigerant leak. Here are some of the most common reasons. When it isn’t, driving in your car can be uncomfortable, especially on hot summer days. One of them is that your central AC may stop blowing cold air. Overheating. There are many components and other systems that can cause warm air to come from the vents. I checked the refrigerant pressure with the engine on/ac on high and it falls into the “full” level. Fixing the AC could be as simple as recharging your car's AC refrigerant or repairing a refrigerant leak but may also require complex electrical climate control repair or slipping compressor clutch to get your air conditioning operating at top performance once again. Your AC cools air by blowing it over the evaporator coil. I took it to recharge the air and was told it could probably be a slow leaking evaporator. (See right image.) However, if the coil gets too cold, the condensation on it will freeze, turning the coil into a big block of ice. 01. of 07. The system is sealed with r134a gas at a guess which has a pressure switch for high/low pressure safety. Our auto shop proudly serves residents in Modesto, CA, … ... Over the weekend I hope to do a post on doing just that, after I completed the task on my own car this week with success at little cost. Some of the most common auto ac repair questions that are asked are why the car’s air conditioner stops blowing air, why it stops blowing cold air, or why the AC is blowing hot air. This is perhaps the easiest fix for a faulty air conditioner. 2007 Ford Taurus. “Car ac not blowing cold air when hot outside” or “car ac not cold enough”: This happens due to two reasons. Most cars have a device that temporarily disengages the compressor of the car air conditioning when an engine is under a lot of stress or when the engine is extremely hot and this is normal. Here are some reasons why this could happen: Dirty Air Filter. Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. This is the most common reason for a central AC not blowing cold air. However, when the unit is properly set to "Cool" but it doesn't blow cool air, possible problems include low refrigerant, dirty air filters, and coil freeze-over. Those of us who live in low temperate zones could go for many months at a time without using our car’s air conditioner. Why Does My Car Air Conditioner Blow Cold Then Warm? Here are a few of the reasons why a car air conditioner may not be blowing cold air: Why is my car air conditioner not blowing cold air . There's probably a button you have to press to activate the AC. May 28, 2018. There’s too many rambling answers on here. My car is a 2001 Honda Civic and recently, the air conditioner hasn't been working properly. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. The first thing to check is the levels of Freon in the system. Expansion valve freezes up 4. In a properly working air conditioner, a fan will draw air over the evaporator coils, where it is cooled, and then be re-circulated back into the room. And, when it senses any issue, AC is the first thing to get shut-off. If your air filter is blocking airflow, the AC unit won’t be able to work properly. My car had a hissing sound when air conditioner is on then stopped blowing cold air. The most common causes of broken air conditioning are leaks or compressor issues. When your air filter has dirt buildup on it, the cold air won’t be able to flow through. Although an automotive AC system has few moving parts, diagnosing why your car is blowing warm air can be tricky. One of the main reasons why a compressor may fail is if it was not … Unreliable car heaters can make the cold winter months practically unbearable. hadynyah / … Is your air conditioner not blowing any air? One of them is the low quantity of the refrigerant, which prevents the refrigerant from absorbing the coldness as required. If no air is coming through your supply vents and the AC unit isn’t working at all, follow these steps: 1) Check your thermostat temperature— Make sure you’ve set the temperature setting at least 5 degrees below your room temperature. For a more in-depth look at automotive air conditioning systems, read this How Stuff Works article! The problem occurs at most cars at some point in their lifetime. Clogged condenser. The reason why car AC is not blowing cold air anymore 1. 3. Your air conditioner is great—when it’s working well. Without it, it would be impossible to move the refrigerant. Check the basics first. A large restriction of refrigerant will also result in your A/C blowing warm air. Why tell this story? The air is blowing from the vents and it is cool air, not hot air, but its not blowing enough cold air to lower the temperature inside the car. This is the most common reason for why your car’s AC is not blowing cold air. Blend air door is the reason for drawing hot air to cold air in your car system. Learn more: Has Your Air Conditioner’s Air Filter Betrayed You? If you know how to gauge and refill Freon, do it. It may not be the easiest of tasks if you are not familiar with working with car air conditioners. There are a variety of reasons why your car AC is not blowing cold air. This door is located in the ventilation system. The office staff members answering customer calls at ACE Home Services often check off this concern: “Air conditioner not blowing cold air,” which gets our HVAC technicians in the truck and on their way.Among HVAC companies in Phoenix, this is the most frequent call for help.In the high heat of summer, and in the slightly cooler days of fall, we still get the call. That ice limits the flow of air … 2. One of the most common reasons for a window air conditioner to fail to deliver cold air is incorrect mode selection. HI, I have a 2005 kia spectra5, my a/c unit works, but sometimes when Im driving the airflow stops. This six step process has been very helpful and I will definitely try this. If your car’s air conditioner suddenly stops working, it can be incredibly inconvenient. Contrary to what you might think, too much refrigerant flowing into the evaporator doesn’t lead to cooler air. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. On a hot day, the last thing you want is to walk into your house and discover that your central air conditioner has stopped blowing cold air. So, make sure that you check the compressor as it could be the reason why car AC not blowing cold air after recharge. There are many reasons why your AC isn’t cooling off your home. If your air conditioner isn’t blowing cold air, here are a few things to check for: Be sure your air filter isn’t clogged. Electrical Issues The Causes Why Car AC not Blowing Cold Air When Idle? Stuck & Blend Air Door . Also sometimes I see a white cloud of … Maybe it is, but it is scorching outside so it doesn’t seem as cold as you would like it. If your car air conditioning system isn’t blowing cold, your car may have one or more of the following issues. There are a variety of reasons why your car might not be blowing cold air, or might not feel like it’s blowing cold air, and some are an easier fix than others. 3. The cold air returns shortly, and the cycle repeats itself for as long as you are driving. 7. Having your car’s air conditioning go out suddenly can ruin your day fast. Leaks and blockages. If your air conditioner is too powerful, it will cycle on and off more frequently and not stay on long enough to remove humidity from the air. With most A/C problems, low Freon levels tend to be the primary problem the vehicle is having. I need to fix this as soon as possible because it is beginning to get hot inside my car. Car issues can make people scratch their heads. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by pearsonrj, Apr 18, 2012. Most likely it’s low on gas. A/c not cooling. What’s wrong with your car? So you went for a road trip or a long drive, and after 30 minutes of driving realized that your AC suddenly stopped working or switched to blowing warm air. So if you’re wondering why is my car air conditioner not blowing cold air, contact our ASE Certified technicians at Auto & Fleet Mechanic for more information about auto AC service and to schedule an appointment. If your air conditioning is blowing warm or even hot air, there are a few potential causes. If I put my hand up to the vent, I feel the cold air inside the duct but there is no airflow and the fan sounds like is working. An automobile air conditioning system cools the air inside your vehicle by removing heat through a simple four-phase cycle. When Freon starts to get low, the A/C can start intermittently blowing out cool air—particularly when it reaches a certain speed—and blowing hot air at other times. Again, it’s the ductwork. But all you have to work with are the symptoms. You will still get air flow through the AC vents in the passenger compartment because of the fans in this section. Believe it or not, protracted periods of idleness can cause the compressor to “go bad” and then it won’t perform properly. Why is my car not blowing hot air? Low refrigerant. Problem #2: Frozen evaporator coil. Your A/C blows warm air. Freon is the chemical refrigerant that helps cool the air circulated by your car’s air conditioner. You jump in, crank up the engine, turn the dial and boom... you are screaming WHY IS MY CAR AIR CONDITIONER NOT BLOWING?? Lastly, the reason why your car air-conditioning isn’t blowing cold air is because your engine is overheating. If your car heater is suddenly blowing out cold air instead of heat in the middle of a bitterly cold winter, you have a good reason to be frustrated. Hence, your room will not be optimally chilled. Maybe your car air conditioning system only needs a topping-off. If your air conditioning mechanics is not up to par, then have a certified car air-conditioning system mechanic check it for you. 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