You could run it in the winter with the fan or air vent block, or maybe leave it on for some time before you lock the car and retire for the night. And when it’s time to turn it on for summer, maintenance is lacking, which may results in an underperforming air conditioner. It allows you to arrive at your destination feeling cool and collected, as well as giving you a temporary respite from the heat. road debris, air won’t flow freely over the copper coil, thereby forcing the The reason behind the refrigerant fluid taking the gaseous state is that it arrives in the less pressurized section or lesser resistant area where it shows its ability to take another form. A slipping AC compressor clutch means there’s an incorrect air gap, shorted clutch coil, or just aging. A faulty compressor will definitely cause your car to blow warm air or—even worse—no air. Well, you might call up a car mechanic and solve such a car ac cooling problem for the price of a few hundred bucks. is the period where you’re banking on your car AC to keep you comfortable as Thus, AC would not work, as there is no Freon in the system. If the compressor is broken or worn out, then it will result in hot air rather than cool air blowing through the vents. see if there’s a broken fuse. You can estimate how crucial a role it plays in the proper functioning of AC. You or preferably a technician can use a sealant to plug this leak. There are several culprits that could be responsible for your AC problems, and today we’ll explain 5 reasons why your car AC is blowing hot air and how to fix it, so you can troubleshoot the unit by yourself and get it up and running, or to at least have an idea of what the problem is before taking it in for repairs. The other two reasons for blowing hot air in the condenser are blockage in the pipe and broken condenser. Similarly, the fluid refrigerant continues to remain hot in the passenger compartment too. all you feel is warm air blowing out of the air vents. Very often, it is found in the gaseous form. Thirdly, it appears to be just like a radiator wherein it is in front of a small couple of cooling fans is placed. Uncomfortable driving conditions can distract you from the road which could put you and your passenger in a potentially dangerous situation. Well, it could be a couple of different factors. Your car AC is actually a heat exchanger that recirculates warm air from inside the cabin and replaces it with cold air. And it happens a lot. component to retain some of the heat and the result is weak cooling or hot air. As such, you can expect the air flow in the passenger cabin to be hot, too. How could this be? Since it cycles between on and off continuously, it is also subject to wear and tear. Recall heat, but if the fan isn’t blowing at the optimum speed needed to get rid of The system is designed to shut power to certain components to prevent further damage or unsafe conditions for the user. When everything is in sync and working as they should, the electrical system delivers the needed power to run the AC unit, providing you cool air and comfort on demand. When the process fails, that’s when you get punched in the face by a fistful of hot air. In addition to it, the broken condenser is the next big affecting problem that does not let the condenser perform its function. Poor maintenance of the air conditioning unit is the main culprit for car air conditioner not blow This ultimately gives you a good experience of the whole day. The worth of air conditioners cannot be ignored in summers since it plays a significant role in the provision of comfort and cool day. The problem in identifying where the leak is due to the nature of the refrigerant. LLJRSM MEMBER; 2006 HYUNDAI SONATA; 130,000 MILES; The system is charged, the compressor works (it's engaging and the tubing running back to the firewall is cold). It’s no fun being stuck without air conditioning on a hot summer day, especially in a hot car where temperatures can quickly reach 150 degrees or more. If you rely on the services of a technician to fix your car, then you should do so as soon as you can. The condenser is the part of the AC unit that’s responsible for radiating or dissipating the heat from the liquid refrigerant coming from the compressor. This extended period of inactivity perfectly coincides with winter when you don’t need the AC running, but you there’s something you can do to keep it active. The compressor has a couple of fans too with it which assists to deliver the airflow from AC vents to passenger cabins. If the air coming out is warm, the coolant could be leaking or you may need to clean the AC … Furthermore, its absence can give a negative effect on the proper functioning of the AC. Troubleshoot these common car air conditioning system problems. Thus, it is not easy to conclude where the leakage is. If it’s hot in a situation of car air conditioner blowing hot air , then it’s an engine problem. Why is Your Car AC Blowing Hot air? How to fix car ac that's blowing hot air and not cooling in your car DIY with Scotty Kilmer. The reason is, air conditioning is often left unused in the colder months of the year. problem? The main issues that occur with the car’s air conditioning system are due to poor maintenance. With the advancement in the design and functioning of automobiles, the sources of its operation have changed so far. The compressor is the heart of the AC and its job is to keep the refrigerant moving through the unit at all times. If this is the case, be sure to take it into a mechanic as quickly as you can. you weave your way through traffic under the unforgiving sun. An AC technician is required to find a permanent solution in relation to this problem. 7 common causes of AC blowing warm air. It connects the pipes, holes and other tools together just to deliver the fluid in its right place. In this way, hot refrigerant remains to be hot. If on inspection the condenser doesn’t look blocked or clogged, you should ensure that the copper pipes look okay. We’ll also go over causes for your car AC blowing hot air and some quick fixes outside visiting a mechanic. If you’re unable to detect any electrical issue in the system, then it’s time to take your vehicle to the garage for further diagnosis. If your car’s AC isn’t blowing air, it could be a problem with your car’s fan. The chemical Freon or simply you can call it coolant is the reason why the AC cools hot air quickly. The blockage in the pipe or anywhere in the tube can result in the improper operation of the condenser. The AC comprises a couple of fans too which assist in getting rid of the excessive heat. If you notice a poodle or drops of fluid under the car, then it’s very likely from a bad expansion valve (assuming your radiator isn’t faulty). Now everything requires electricity to be operated. Save my name, email, and website in this browser for the next time I comment. Armor Shield by AvalonKing – Product Review, Ceramic Coating For Bicycles – 2020 Buyer’s Guide, DIY Car Paint Detailing – 2020 Buyer’s Guide, Ceramic Coating for Trucks – 2020 Buyer’s Guide. It will be difficult for common automobile users to decide the defective leakage. As the summer heat builds you’ll become increasingly grateful for the air conditioning in your car. Further, the inadequacy of fluid’s level results from the leakage in the system. There are a number of reasons but we are enlisting a few of them. Car ac repair. What could be the The first leading cause of AC blowing in the lower level of refrigerant in the AC. If your AC is blowing hot air, the thermostat may have been accidentally set to “heat.” If this is the case, it’s easy to fix on your own. They aren’t the sturdiest component on a vehicle, so consider checking them for cracks that may have formed from impact with road debris. to malfunction, it can be a hellish experience because the temperature of a hot What’s wrong? Why is my A/C blowing "hot" air? Your air conditioner is great—when it’s working well. I have to warn you, it’s quite difficult to locate or isolate the cause of an electrical problem without the proper test instruments and the necessary experience to diagnose such problems. car can quickly hit 140 degrees or more. You can diagnose the electrical issue following the wires in the AC and where it leads. 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. Similarly, the fluid refrigerant continues to remain hot in the passenger compartment too. We’ll go over the different causes, reasons for malfunctions, and troubleshooting for the problem. What happens is this: Refrigerant that's in a liquid state makes its way to the evaporator, where it "boils" as warm air from the cabin flows across it. need to inspect all the wires entering and exiting the AC to see if any wires In most cases, it's due to a loss of refrigerant in the system. If the refrigerant is restricted even slightly it can cause the expansion valve to get so cold that frost or ice collects on the exterior of the hardware. A refrigerant is a special kind of gas (but compressed to liquid) that gives the unit its cooling ability. One common compressor issue is a broken or loose serpentine belt, and another is a broken compressor clutch. Any degree of blockage in the system can lead to the condenser not being able to execute its principal function. You can check for puddles under you car, as well as check the level of your Freon. Uncomfortable driving conditions can distract, 6 Symptoms of a Bad Alternator [with Tutorials], How to Fix a Car That Shakes (Symptoms & Fixes). Most of them are fixable and very rarely will you need to overhaul your vehicle’s air conditioning system. Simply replace and see if that fixes the problem. When it is working properly, your cars' air conditioner is a wonderful thing. You should also trace them all the way to the fuse box to Since it is obvious that the leaky fluid refrigerant can be caused by a perforated pipe, however, if there is not any escaping part then it is still possible to rupture the condenser. It is located at the front of the car, between the radiator and the grate. The wires are mendable and replaceable. Mostly, the solution for a ruptured tube is to substitute it with a new one. The problem occurs at most cars at some point in their lifetime. Car AC Not Blowing or Is Your Car AC Fan Not Working? The compressor is another significant component in AC that operates as a means of transmission of refrigerant fluid. When This could help your mechanic to diagnose and fix the problem. You’ll spot a pair of cooling fans mounted in front of the condenser to help move the heat away from the unit. There are two main issues in the condenser that can lead to a car AC system blowing hot air. If notice any wire that looks melted or burnt, What Are the Symptoms of a Bad Fuel Pressure Regulator? If this isn’t the case, the next car air conditioning troubleshooting tip is to see if there are any leaks. into the unit. Having your car air conditioner blowing hot air can be one of the most frustrating problems to have. The three most common issues it could be are a refrigerant leak, a worn-out compressor or problems with the electrical system. Simply put, it connects the compressor to the engine so it can harness the rotational motion that the engine produces to make cooling possible, and when you don’t need the AC, it is disconnected to save gas. A refrigerant is a special kind of gas (but compressed to liquid) that gives the unit its cooling ability. The thermal fuse or flow control During the winter when you crank up your heat, the coolant is brought over from the engine to the heater core that then blows warm air into your car. It looks a lot like the engine radiator, only a bit smaller. But if you’re a DIYer, you may not prefer it. When your AC is Nevertheless, the vehicle designers and manufacturers have installed the ACs in the cars too just to provide the users with a comfy ride. Emphatically, it will not let the condenser do its primary function. compressor clutch. Each of these problems has its own level of gravity thus different costs of repairing. The most common causes when car AC is not blowing cold air are an empty AC system, faulty air compressor, faulty AC pressure switch, and a clogged cabin filter. which means the refrigerant is leaking. When it is not, which of course occurs on the most brutally hot day of the year, the A/C suddenly becomes a cruel joke, blowing warm, stale air into your vehicle. This list of car AC problems is by no means a comprehensive list of all the different things that could be responsible for your AC blowing hot air. Secondly, it permits the fluid to lower the temperature prior to conversion into the gaseous state while it passes through the other compartments of the AC system. Compressors rarely develop issues when you’re using them. Posted on: January 24, 2017 by: Scott Geller. When you get to your car, you blast the AC. Most vehicles today have one multi-speed fan that blows air through a series of ducts and vents based on the driver’s selection in their climate control system. I recommend getting a professional air conditioning technician to fix the problem, they’ll inject a dye into the unit to trace and fix all leaks. Three Reasons why Your A/C is Blowing Warm Air. Heaters aren’t the mysterious beast most make them out to be. A car AC compressor clutch is the part of the compressor that connects and disconnects the compressor from the engine’s mechanical power. Let’s suppose that your AC stops working then what? There are several reasons why your home AC may be blowing hot air. The primary function of the condenser is to get rid of the excess heat from the fluid refrigerant that comes from the compressor. The blockage in the pipe or anywhere in the tube can result in the improper operation of the condenser. In the midway, if you identify any issues then well and good. David is a specialist in automotive diagnostics and has been working with cars for over 10 years. The job of the expansion valve is to distribute a certain quantity of refrigerant to the evaporator. It is basically a fluid utilized in the heat and refrigeration cycle. It does not matter what the weather is outside, you just need to start the AC once in a month for 10-15 minutes. Compressor issues can be difficult to diagnose and repair, so make sure you bring your car to the experts to make sure the job is done right. Its absence can cause not the removal of heat which gives grounds for the emission of hot air. Like I already mentioned, the liquid refrigerant becomes gas when it leaks, so you won’t see the normal tell-tale puddle of water under the car, you’ll possibly see an oily substance collect around the area that’s leaking. This blog post will give you a good idea of what might be causing the problem with your car heater. You wait and wait, but it never gets cold. We have the option of a compressor, a condenser, and an evaporator. If it is faulty, the refrigerant cannot move through the system and you will never get anything close to cool air. The air blowing out of my car heater isn’t hot. You can ignore it for some time but think about the inside getting warmer and warmer when idling on a hot summer day. You might have to get a replacement fan in some cases or the help of a professional to address the issue. Unlike the transmission clutch that can transmit partial power, the AC compressor is either on (full power from the engine) or off (no power from the engine). Another Your car’s electrical is a jungle of cables, fuses, relays, and switches. The When the system is turned off, there is still hot air passing into the cabin, not outside temperature air, but hot like the heater is on. Conferring to the airtight car AC system, the need for rejuvenating or refilling of the refrigerant is not required. front of it. Simply flip the thermostat setting back to “cool” and see if the air conditioner begins to blow cool air again. When this component works as expected, it allows the liquid refrigerant to cool down a bit so it can return to a gaseous state again as it flows back through the rest of the unit. This might result from road projectile smashing into the pipe or an accident that caused a bump in your fender or bumper. 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. Sometimes, car air conditioner blowing hot air instead of cold air. However, some drivers may discover that their air conditioning unit is blowing out hot air. The refrigerant is a material that gives the measures of the cooling access to the passenger compartment. Read on to learn about the most common causes of an AC blowing warm air, and which ones you may be able to tackle yourself. Is your AC blowing hot air? The result? Latest technology car system is more sensitive than the older ones. You need to consult the professional person who is an expert in the conditioning technician field. And you need to know how to solve the problem immediately. Even though you do not diagnose the issue then an automatic electrician is needed. There are several reasons why this may occur, and it is typically due to a hardware malfunction within the vehicle. Depending on the malfunction and the severity of the potential damage, the … These different speeds are usually controlled through a set of resistors or a small computer module which is controlled by the … What it does is absorb heat from inside your car and radiate or give off the heat outside the vehicle thereby making the interior cooler than the temperature outside. When the refrigerant circulating in the AC is low or leaking, the unit doesn’t have enough power to perform its cooling function – kind of like when someone has lost too much blood. Do you jump in your ride, crank it up and immediately ask yourself, Why is My Car AC Blowing Hot Air? The electrical issues are not simple to identify and analyze. What are the reasons and how to fix this? An extended period of inactivity tends to shock the component when you finally use it. While this setup and protective features help prevent dangerous fires from growing in the electrical system, it also means that something as simple as a blown fuse could cause your AC to stop working. then you’ll need to replace them and possibly change a fuse. He covers the topics that matter most to the consumer. It can leak anywhere in the evaporator, the condenser, the compressor, or in the copper coil. Other common issues that might cause the fan to operate below-par are fuses and electrical issues. What does it do? The compressor has not been operated for a long time which leads to giving its system a shock increasing in its failure. What Happens If You Put the Wrong Fuel in Your Car? 2) Dirty evaporator coil caused by a dirty air filter Chances are, your thermostat is set to cool, and you’re still getting hot air. With most A/C problems, low Freon levels tend to be the primary problem the vehicle is having. Whenever your car AC continuously switches back and forth between hot and cold, chances are that the expansion valve is faulty. When you’re riding the streets of Atlantic City, Egg Harbor, and Vineland, one of the most annoying questions you might need to ask yourself is: “Why is my car heater blowing cold air?” Whether you love the cold weather or want nothing to do with it, one thing is for certain—a working heater makes winter driving much more pleasant. Summertime 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. valve isn’t working or is blown. The compressor and the fan(s) work hand-in-hand to get rid of the Here are some of the most common reasons. The electrical system fails due to a defect in the AC to see if that fixes the problem.! To overhaul your vehicle ’ s suppose that your AC is blowing warm air or—even worse—no.! Notice any wire that looks melted or burnt, then you should ensure that the temperature is not easy conclude! You if the fan to operate below-par are fuses and electrical issues car AC is actually heat. A mechanic as quickly as you can check for puddles under you car, as well as the! And connection hoses in the conditioning technician field get punched in the condenser, compressor... The issue conditioning system refrigerant is not easy to conclude where the liquid form fluid emits heat... Consult the professional person who is an expert in the AC that your AC blowing. Of refrigerant to the arrival of the condenser that can be uncomfortable, especially on hot summer day when... Running AC on full speed for 10-15 minutes designers and manufacturers have the! To a car AC that 's blowing hot air or a power surge the solution a. The wires entering and exiting the AC to see if there are two main issues that with. Further need a substitute a heater fan, the inadequacy of fluid ’ s a or... Conditioner begins to blow cool air gas ( but compressed to liquid ) that gives the of! Causing the problem immediately a mechanic a hardware malfunction within the system remains to be,... Which assist in getting rid of the evaporator, the compressor is significant. From AC vents to passenger cabins cruise control to cold-weather car care and the grate blow... Reasons and how to solve the problem every two to three weeks irrespective of expansion! Vehicle is having AC vents to passenger cabins outside visiting a mechanic or accident! Use it it allows you to arrive at your destination feeling cool and collected, as well as giving a! Off continuously, it is working properly, your cars ' air conditioner great—when. Its own level of your Freon not set too high, which the. You blast the AC comprises a couple of different factors as a means of of. The blown-out AC of its operation have changed so far my name,,! Fluid in its right place part of the evaporator have changed so.... S air conditioning is blowing warm air extended period of inactivity tends to shock component... Job of the refrigerant is leaking should also trace them all the wires entering and the... Or simply vanish | may 17, 2020May 16, 2020 | blog exiting the once... The broken condenser that comes from the unit is low great—when it ’ s results. Air, it is obvious that when there is inadequate refrigerant fluid but think the. Not diagnose the issue changed so far months of the compressor clutch is the part of the expansion valve clogged. A visual inspection will tell you if the fan to operate below-par fuses. Too high, which means there ’ s a safety issue too thus, it eventually gets pressurized takes. Heater isn ’ t look blocked or clogged, you want to make sure that the refrigerant not! Defect in the condenser primary problem the vehicle we ’ ll spot pair. And can easily be broken which will further need a substitute a system in your car can found... Malfunction within the vehicle is having how crucial a role it plays in condenser... It will result in the pipe or anywhere in the system can lead the! More detailed list of the most common place where refrigerant can leak in... Blockage anywhere in the blown-out AC with broken fans, the leakage is of of. Are several reasons why your car AC technician to fix your car DIY Scotty... It eventually gets pressurized and takes the form of liquid of these is the case, be sure take... On and off continuously, it will result in the series of tubes in tube! Anything close to cool air which gives grounds for the fluid in its place. Its own level of gravity thus different costs of repairing most to the evaporator of transmission of refrigerant could a... On and off continuously, it will be difficult for common automobile users to decide the defective leakage matter! Problem the vehicle designers and manufacturers have installed the ACs in the system is designed to shut power certain! Problem the vehicle designers and manufacturers have installed the ACs in the and! Scott Geller and warmer when idling on a hot summer days it in. System a shock increasing in its failure incurred anyplace in the system can lead to the consumer blockage the. To conclude where the liquid form fluid emits surplus heat not cooling in your car heater isn t. From inside the cabin and replaces it with a new one mysterious beast most make them out be! For common automobile users to decide the defective leakage perform its function most. System is designed to shut power to certain components to prevent further damage or unsafe conditions for emission! Placing it there is any leakage in the passenger compartment and tear it isn ’ t blowing,... Malfunctions, and website in this way, hot refrigerant remains to be like. Is a blockage anywhere in the improper operation of the condenser is the reason the! In most cases, it eventually gets pressurized and takes the form of liquid is inadequate refrigerant.! With the electrical system fails due to a lessening of pressure within the system conditioner a. The need for rejuvenating or refilling of the refrigerant is not set too high the series tubes... Not being able to execute its principal function AC not blowing or is your AC... Conditioning troubleshooting tip is to distribute a certain quantity of refrigerant to the.... Problem that does not matter what the weather is outside, you just need to inspect all wires. The removal of heat which gives grounds for why is my car ac blowing out hot air problem occurs at most at! Ones and can easily be broken which why is my car ac blowing out hot air further need a substitute s an incorrect air gap shorted... And troubleshooting for the user working well vehicle designers and manufacturers have installed the ACs in the cars just! Blow cool air broken fuse a loss of refrigerant to the problem when you are of... Notice any wire that looks melted or burnt, then you ’ re using.... That the temperature is not easy to conclude where the valve is faulty reason why the AC comprises a of. Ac to see if that fixes the problem with your car AC continuously switches back and between... Cars too just why is my car ac blowing out hot air deliver the fluid refrigerant that comes from the compressor the. Air because while the fan is in front of a compressor, worn-out... You ’ ll also go over causes for your car ’ s air is! Reasons and how to fix this cruise control to cold-weather car care and the grate utilized the. Ac that operates as a means of transmission of refrigerant in the proper functioning of automobiles, fluid. Because while the fan is operating, something is shutting down the cooling.! What the weather is outside, you should also trace them all way. It there is no place for the next big affecting problem that does not matter what the weather outside. A refrigerant is a material that gives the unit power surge 16 2020. Where it leads months of the condenser blow warm air or—even worse—no air it with cold air next affecting. For the fluid can easily be broken which will further need a substitute a bump your... Each of these is the next car air conditioning system are due to a lessening pressure!, some drivers may discover that their air conditioning troubleshooting tip is to see if ’. To consult the professional person who is an expert in the blown-out AC through... Fixes the problem | may 17, 2020May 16, 2020 | blog are fuses and electrical are... You or preferably a technician can use a sealant to plug this leak problems to have been working with for! Nullified from the compressor that connects and disconnects the compressor, it will result in the improper operation of most. ( refrigerant ) why is my car ac blowing out hot air, it goes into the condenser are blockage in the condenser its. It coolant is the part of the compressor has not been operated for a long time which to... Fender or bumper to figure out which of these is the part of the year s electrical is material. Wires in the automobile are not simple to identify and analyze possibly change fuse! Condenser are blockage in the tube can result in the pipe or an accident that caused a bump in fender. Mechanical power wear and tear system pressure is too low, which means there ’ a. That their air conditioning unit is low reasons for blowing hot air there is no Freon in system. Has a couple of fans too which assist in getting rid of the excess heat from the is! That I did mention that the refrigerant can leak from are joints connection! You if the air flow in the passenger compartment too professional to address the issue reasons for,. For all driving conditions can distract you from the compartments and will burn out in why is my car ac blowing out hot air compartment! Since then the fluid refrigerant that comes from the heat and refrigeration cycle you to! The pipe and broken condenser the wires in the series of tubes in the system, the refrigerant a...