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. We’ll also go over causes for your car AC blowing hot air and some quick fixes outside visiting a mechanic. 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. What Happens If You Put the Wrong Fuel in Your Car? which means the refrigerant is leaking. A refrigerant is a special kind of gas (but compressed to liquid) that gives the unit its cooling ability. As such, you can expect the air flow in the passenger cabin to be hot, too. 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). The system is designed to shut power to certain components to prevent further damage or unsafe conditions for the user. You’ll spot a pair of cooling fans mounted in front of the condenser to help move the heat away from the unit. Uncomfortable driving conditions can distract you from the road which could put you and your passenger in a potentially dangerous situation. It is located at the front of the car, between the radiator and the grate. One common compressor issue is a broken or loose serpentine belt, and another is a broken compressor clutch. Even though you do not diagnose the issue then an automatic electrician is needed. This could help your mechanic to diagnose and fix the problem. 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. If one of these components in the electrical system fails due to a defect in the system, age, or a power surge. The electrical issues are not simple to identify and analyze. front of it. Save my name, email, and website in this browser for the next time I comment. The AC comprises a couple of fans too which assist in getting rid of the excessive heat. If it is faulty, the refrigerant cannot move through the system and you will never get anything close to cool air. The most common cause of compressor failure is inactivity – try to imagine a component that wants to work all the time or it fails. What does it do? need to inspect all the wires entering and exiting the AC to see if any wires Conferring to the airtight car AC system, the need for rejuvenating or refilling of the refrigerant is not required. You can ignore it for some time but think about the inside getting warmer and warmer when idling on a hot summer day. In this way, hot refrigerant remains to be hot. heat, but if the fan isn’t blowing at the optimum speed needed to get rid of to malfunction, it can be a hellish experience because the temperature of a hot Here are some of the most common reasons. 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. Emphatically, it will not let the condenser do its primary function. Now everything requires electricity to be operated. Recall 6 Reasons Why Your Car’s Air Conditioner Might Be Blowing Hot Air. Electrical Issues The chemical Freon or simply you can call it coolant is the reason why the AC cools hot air quickly. With the advancement in the design and functioning of automobiles, the sources of its operation have changed so far. But A/C is more than just comfort; it’s a safety issue too. Required fields are marked *. But if you’re a DIYer, you may not prefer it. Furthermore, its absence can give a negative effect on the proper functioning of the AC. 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. If you notice it’s empty then refill and you should be good to … It allows you to arrive at your destination feeling cool and collected, as well as giving you a temporary respite from the heat. There are several reasons why this may occur, and it is typically due to a hardware malfunction within the vehicle. Thus, it is not easy to conclude where the leakage is. Any time a system in your car malfunctions or breaks it can be frustrating. 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. see if there’s a broken fuse. In most cases, it's due to a loss of refrigerant in the system. Thus, it can be incurred anyplace in the pipes of the system. 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). 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. If there’s an area on the pipe that looks compressed, then it might be blocking the free-flow of refrigerant through the unit. In this way, hot refrigerant remains to be hot. You can estimate how crucial a role it plays in the proper functioning of AC. Thus, AC would not work, as there is no Freon in the system. In a situation where the valve is clogged, the flow of refrigerant could be obstructed or without restriction. 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. Uncomfortable driving conditions can distract, 6 Symptoms of a Bad Alternator [with Tutorials], How to Fix a Car That Shakes (Symptoms & Fixes). The compressor is the heart of the AC and its job is to keep the refrigerant moving through the unit at all times. The worth of air conditioners cannot be ignored in summers since it plays a significant role in the provision of comfort and cool day. Similarly, the fluid refrigerant continues to remain hot in the passenger compartment too. 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. It’s actually blowing hot air! Your AC is blowing warm air because while the fan is operating, something is shutting down the cooling mechanism. There are a number of reasons but we are enlisting a few of them. into the unit. Depending on the malfunction and the severity of the potential damage, the … An extended period of inactivity tends to shock the component when you finally use it. The result? If it’s hot in a situation of car air conditioner blowing hot air , then it’s an engine problem. The most common place where refrigerant can leak from are joints and connection hoses in the unit. In addition to it, the broken condenser is the next big affecting problem that does not let the condenser perform its function. The other two reasons for blowing hot air in the condenser are blockage in the pipe and broken condenser. Since then the fluid takes the gaseous form prior to the arrival of the evaporator. The reason is, air conditioning is often left unused in the colder months of the year. David is a specialist in automotive diagnostics and has been working with cars for over 10 years. The compressor has not been operated for a long time which leads to giving its system a shock increasing in its failure. The problem occurs at most cars at some point in their lifetime. compressor clutch. This might result from road projectile smashing into the pipe or an accident that caused a bump in your fender or bumper. Compressors rarely develop issues when you’re using them. Your car’s electrical is a jungle of cables, fuses, relays, and switches. Why is Your Car AC Blowing Hot air? Your car AC is actually a heat exchanger that recirculates warm air from inside the cabin and replaces it with cold air. The three most common issues it could be are a refrigerant leak, a worn-out compressor or problems with the electrical system. He’s also an automotive reporter and reviewer. 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. which means there’s a blockage somewhere. When you get to your car, you blast the AC. We recommend running AC on full speed for 10-15 minutes every two to three weeks irrespective of the outside temperature. A cold winter day is no time to find out your car heater isn’t working. 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). However, some drivers may discover that their air conditioning unit is blowing out hot air. the ventilation holes on condenser are blocked by the accumulation of dirt and Car ac repair. The fluid or refrigerant takes its first way from the canister. The chemical can run out if there is any leakage in the AC. It is basically a fluid utilized in the heat and refrigeration cycle. The compressor and the fan(s) work hand-in-hand to get rid of the Thirdly, it appears to be just like a radiator wherein it is in front of a small couple of cooling fans is placed. You can check for puddles under you car, as well as check the level of your Freon. valve isn’t working or is blown. 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. Your email address will not be published. You can diagnose the electrical issue following the wires in the AC and where it leads. problem? A/C isn’t cooling? 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. 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. 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. 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