Slow refrigerant leak. 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 . For a more in-depth look at automotive air conditioning systems, read this How Stuff Works article! 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. 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. If you know how to gauge and refill Freon, do it. The problem occurs at most cars at some point in their lifetime. The most common cause of window air conditioners not blowing cold air is a lack of adequate air flow. 3. hadynyah / … The most common causes of broken air conditioning are leaks or compressor issues. Most likely it’s low on gas. This door is located in the ventilation system. Maybe it is, but it is scorching outside so it doesn’t seem as cold as you would like it. Thank you for sharing what we need to do if the air conditioner isn't blowing cold air. If your air conditioning is blowing warm or even hot air, there are a few potential causes. HI, I have a 2005 kia spectra5, my a/c unit works, but sometimes when Im driving the airflow stops. Why tell this story? There's probably a button you have to press to activate the AC. 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 … One of them is the low quantity of the refrigerant, which prevents the refrigerant from absorbing the coldness as required. 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. I checked the refrigerant pressure with the engine on/ac on high and it falls into the “full” level. There are many reasons why your AC isn’t cooling off your home. Also sometimes I see a white cloud of … I took it to recharge the air and was told it could probably be a slow leaking evaporator. Unreliable car heaters can make the cold winter months practically unbearable. A large restriction of refrigerant will also result in your A/C blowing warm air. It may not be the easiest of tasks if you are not familiar with working with car air conditioners. Our auto shop proudly serves residents in Modesto, CA, … Those of us who live in low temperate zones could go for many months at a time without using our car’s air conditioner. 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. Here are some of the most common reasons. My car had a hissing sound when air conditioner is on then stopped blowing cold air. Cold Air Blows Intermittently. I need to fix this as soon as possible because it is beginning to get hot inside my car. Although an automotive AC system has few moving parts, diagnosing why your car is blowing warm air can be tricky. Here are some reasons why this could happen: Dirty Air Filter. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by pearsonrj, Apr 18, 2012. Contrary to what you might think, too much refrigerant flowing into the evaporator doesn’t lead to cooler air. You will still get air flow through the AC vents in the passenger compartment because of the fans in this section. Stuck & Blend Air Door . 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. 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. 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. One of them is that your central AC may stop blowing cold air. 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. Your air conditioner is great—when it’s working well. Problem #2: Frozen evaporator coil. And, when it senses any issue, AC is the first thing to get shut-off. The cold air returns shortly, and the cycle repeats itself for as long as you are driving. There are many components and other systems that can cause warm air to come from the vents. This six step process has been very helpful and I will definitely try this. One of the main reasons why a compressor may fail is if it was not … An automobile air conditioning system cools the air inside your vehicle by removing heat through a simple four-phase cycle. 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. 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. Not an expert but ironically, in my experience, this is usually down to a fault in the cooling system. With most A/C problems, low Freon levels tend to be the primary problem the vehicle is having. My car is a 2001 Honda Civic and recently, the air conditioner hasn't been working properly. A/c not cooling. (See right image.) 01. of 07. 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. Overheating. Lastly, the reason why your car air-conditioning isn’t blowing cold air is because your engine is overheating. If your air conditioning mechanics is not up to par, then have a certified car air-conditioning system mechanic check it for you. One of the most common reasons for a window air conditioner to fail to deliver cold air is incorrect mode selection. 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. The compressor is not working properly. The Causes Why Car AC not Blowing Cold Air When Idle? Car issues can make people scratch their heads. May 28, 2018. 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. 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. So, make sure that you check the compressor as it could be the reason why car AC not blowing cold air after recharge. ... Too much heat in the system may impact air conditioner performance. What’s wrong with your car? Maybe your car air conditioning system only needs a topping-off. When your air filter has dirt buildup on it, the cold air won’t be able to flow through. 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 perhaps the easiest fix for a faulty air conditioner. If your car’s air conditioner suddenly stops working, it can be incredibly inconvenient. Your AC cools air by blowing it over the evaporator coil. Why Does My Car Air Conditioner Blow Cold Then Warm? 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. Electrical Issues 7. Again, it’s the ductwork. If your air filter is blocking airflow, the AC unit won’t be able to work properly. Your A/C blows warm air. 2. Learn more: Has Your Air Conditioner’s Air Filter Betrayed You? This is the most common reason for why your car’s AC is not blowing cold air. “Car ac not blowing cold air when hot outside” or “car ac not cold enough”: This happens due to two reasons. Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. The system is sealed with r134a gas at a guess which has a pressure switch for high/low pressure safety. Having your car’s air conditioning go out suddenly can ruin your day fast. 2007 Ford Taurus. 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. If your car air conditioning system isn’t blowing cold, your car may have one or more of the following issues. 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. Leaks and blockages. But all you have to work with are the symptoms. 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. Is your air conditioner not blowing any air? 2. That ice limits the flow of air … 3. There’s too many rambling answers on here. Though the AC not blowing isn’t exactly the issue, the stuffy air can make it feel like it is not blowing. When it isn’t, driving in your car can be uncomfortable, especially on hot summer days. The reason why car AC is not blowing cold air anymore 1. Believe it or not, protracted periods of idleness can cause the compressor to “go bad” and then it won’t perform properly. Hence, your room will not be optimally chilled. Why is my car not blowing hot air? You jump in, crank up the engine, turn the dial and boom... you are screaming WHY IS MY CAR AIR CONDITIONER NOT BLOWING?? 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. The first thing to check is the levels of Freon in the system. ... 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. Do not expect the air do be cold, however. However, if the coil gets too cold, the condensation on it will freeze, turning the coil into a big block of ice. Without it, it would be impossible to move the refrigerant. There are a variety of reasons why your car AC is not blowing cold air. This is the most common reason for a central AC not blowing cold air. Blend air door is the reason for drawing hot air to cold air in your car system. Low refrigerant. Low Refrigerant Pressure . There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. Expansion valve freezes up 4. 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