There could be various reasons for car heater not working but it basically happens for two reasons: air from the blower is not blow toward the heater core or the coolant does not flow through … Contamination from corrosion or worn internal parts can also damage the compressor. The The average car today contains a bewildering range of sensors that feed information to various computers to monitor everything from air intake to emissions and engine timing. But we wanted to explain here 5 of the most common reasons why we find that car and truck air conditioning units are not blowing cold air, and the best way to overcome this issue- and get the AC cold again! So, make sure that you check the compressor as it could be the reason why car AC not blowing cold air after recharge. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. The cooling fan in the condenser is the first thing that you should look into while finding out the reason for car air conditioner not blowing cold air when idling. The specifics will vary quite a deal from one vehicle to another, but most systems have some kind of blend door that changes how air flows or doesn’t flow, through the heater core. 1. Restrictions in the System: What happens when you kink your garden hose? If the high pressure spikes above 300 or more, then the compressor can produce pressure but... Get a fair & transparent quote instantly before booking. Anyone could have told me its a $1,200 repair and I wouldn’t have known differently. Running the AC 10 minutes a week, even in the winter, helps circulate refrigerant oil and lubricate the compressor and condition O-rings and seals. … Could it be so hot outside that the AC cannot get down to the set temperature? This is the most common reason for why your car’s AC is not blowing cold air. There could be several reasons behind this problem. Modern AC systems use an expansion valve or orifice tube to control the amount of refrigerant entering the evaporator. You may hear a slight “click” or change in engine speed when the clutch engages. When an air conditioning unit is not blowing cold air, it could sometimes be due to certain settings. Also, check that the AC service port (Schrader) valve caps and O-rings are in place and only hand-tight. If the compressor was recently replaced and has stopped working then most of the time it is because a fitting was left loose and all of the refrigerant came out or there is a loose electrical connection. Always make sure that both fans are running at designated speeds. Low refrigerant can stem from a number of things, including leaks and failed components. What I find particularly great is that both issues were very easy and inexpensive fixes. A ride can be even more uncomfortable if you are stuck in traffic. And that eventually cools the refrigerant. If this is the case, you need to replace your air filter with a new, clean one. AC Repair; AC Replacement; AC … Sometimes, the coil may get dirty and stay out of order. Low refrigerant levels due to a leaky O-ring, seal or other component are the most common problems associated with a poorly performing AC system. Sometimes people think it’s not blowing cold air when it is, and it is just that it is hot outside. Both fans should be running even if the car air-conditioning is turned on during a hot summer day. Air conditioning works by attracting the heat from the air, effectively cooling the air, and then blowing this cold air into your car. Leaking or Low Refrigerant. The main issues that occur with the car’s air conditioning system are due to poor maintenance. These devices use desiccant (like those little packets you find in a box of new shoes) to absorb moisture in the AC system. They have the specialty tools and equipment to accurately diagnose the problem, safely reclaim and recycle refrigerant and make repairs to keep you cool while driving. Thank you for sharing what we need to do if the air conditioner isn't blowing cold air. The AC unit is exposed to stress from the … As mentioned, there are many potential causes for your AC to blow warm or hot air into the cabin rather than cold, fresh air. The condenser in your car’s air conditioner, much like the one in your air conditioner at home, is key in circulating cold air. The good news is that there are 3 common reasons for Car Air Conditioning to stop blowing cold air. Every car produces greenhouse gases. Car AC not blowing cold air can be the result of a small minor problem or a big one that may have to be check with a mechanic. When this happens, you won’t get cold or even cool air blowing from our air conditioner. As mentioned, there are many potential causes for your AC to blow warm or hot air into the cabin rather than cold, fresh air. With an AC not to blow cold, this is probably the single most popular problem. The best setting for diagnosis is “fresh air” (not recirculated) with the air blowing out of the center vents in the dash and the AC turned … Most likely it’s low on gas. Will I refer him? You can reduce your car's environmental impact with tune-ups, filling the tires, and making your car lightweight. One of the most common causes of an air conditioner malfunctioning is a freon leak. Check to make sure the clutch assembly — located at the front end of the AC compressor — is engaging. Here are some reasons why this could happen: Dirty Air Filter. This process creates cold air that is directed inside your … If the heater is working fine, both these hoses will be hot to the touch. Second time using Bryant and he was, in both instances, able to diagnose and locate the problem. Take your vehicle to a certified technician if the DIY suggestions given here didn’t do the trick, or if the system won’t turn on at all. We see this a lot here at AutoAid. Recharging the AC system is usually a one-time fix. Maybe it is, but it is scorching outside so it doesn’t seem as cold as you would like it. However, if the coil gets too cold, the condensation on it will freeze, turning the coil into a big block of ice. Please see our, Toyota Tundra - AC is not working - West Palm Beach, Florida, Jeremy was awesome. I checked the refrigerant pressure with the engine on/ac on high and it falls into the “full” level. With the engine running, blower fan on max high and AC controls set to the lowest temperature, the clutch should be spinning. Typically, air conditioners will blow on cold as low as 28 degrees F but on a really warm day where temperatures soar into the high 90s, the air may only blow as low as 50-60 degrees F. Tip: Ambient (outside) temperature, as well as air flow in general, also plays an important role in the air conditioner working properly. More often than not, it is blocked since the part is so close to the front of the engine, allowing leaves, grass, and other debris to build up, preventing it from doing its job. The only way to properly diagnose a system is with a lot of specialized equipment. If your AC isn’t blowing cold, it must be serviced by a licensed mechanic certified for HVAC (Heating, Ventilation, and Air Conditioning) work. 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. But we wanted to explain here 5 of the most common reasons why we find that car and truck air conditioning units are not blowing cold air, and the best way to overcome this issue- and get the AC cold again! One of the most common causes of an air conditioner malfunctioning is a freon leak. Try turning the dial down all the way, or pushing the buttons to the lowest setting and see if that trips the unit to run. Check for crimps, kinks, and traces of refrigerant on the hose. Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. Check to make sure the clutch assembly — located at the front end of the AC compressor — is engaging. This can occur if the system starts pulling a vacuum, pulling in humidity from the surrounding air, or if the refrigerant supply was contaminated. If there’s a restriction somewhere in the system, it blocks it all up and prevents the AC from blowing cold. I just had him make the repair, which was done quickly. Don’t find yourself out on the road wondering, “Why is my car air conditioner not blowing cold air?” There are several reasons that could cause this problem: The coolant has lost its effectiveness. Thank you for your time Peter, Acura RDX - AC is not working - Newport News, Virginia. Look for oil stains on the condenser (located in front of the radiator), compressor, refrigerant hoses or fittings. A faulty blower fan can make the car ac stopped working suddenly. Therefore, it is possible that your car is low on refrigerant that is preventing your air conditioning from working properly. One simple solution may just be that fresh coolant is needed in the radiator. Thank you Peter! When you turn on the air conditioner in your car, you expect to receive a flow of fresh, cold air. Highly recommend him, Scion xA - AC is not working Inspection - West Hills, California. An air conditioner not blowing cold air is one of the most common HVAC problems we get here in Florida. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. So why is your car air conditioning not cold? Repairs covered by 12-month/12,000-mile warranty. Your car uses coolant – usually made up of 50% antifreeze and 50% water – to cool your engine down, especially during the hot months of summer. If the pressure drops along the way, the exchange from high pressure to low pressure, it’s not properly done. I book this repair this weekend and look forward to Matt repairing my car. Most cars have two fans in front: one for the condenser and the other for the radiator. 25-30°). I will be scheduling my next visit from him soon. In today’s modern cars, the air conditioner is sometimes the first thing that’s turned … A car heater blowing cold air could be a symptom of the failure of the heating unit.. Locating refrigerant leaks can be difficult even for the pros. This can also sometimes be the result of an electrical fault in the compressor’s circuit or clutch. My car is a 2001 Honda Civic and recently, the air conditioner hasn't been working properly. 2. Dirty Condenser. Get a kit that matches the type of refrigerant in your vehicle and includes a gauge to test system pressure before adding refrigerant. If all looks good on the power front and your AC is still not blowing cold air, it could be that the thermostat on your unit isn’t set at an appropriate temperature. Fortunately, if the system is low on refrigerant, you can recharge it to regain access to … Hence, your room will not be optimally chilled. For a more in-depth look at automotive air … His work has been featured in Family Handyman, a Reader's Digest book and Classic Bike Rider magazine, among others. A defective blower fan, engine cooling fans and relays can affect AC system operation and cooling performance. 1. Then, gradually, you began to notice that it wasn't really blowing cold air anymore, or that it would only blow cold when the car was moving but not at idle. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. Lastly, the reason why your car air-conditioning isn’t blowing cold air is because your engine is overheating. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. Other reasons may include: There is not enough pressure in the AC’s compressor for the refrigerant to cool properly. The system is pressurized, the warmth in the air turns the refrigerant gas into a liquid. The level of refrigerant in your system decreases naturally over time (very, very slowly), but leaks can also occur. Bottom line, Bryant does what’s right and is honest about what the problem is. If your AC needs frequent recharging, it’s time to visit your repair shop. Your AC cools air by blowing it over the evaporator coil. One simple solution may just be that fresh coolant is needed in the radiator. Fresh coolant added to the radiator may be all that is needed for the AC to work again. Definitely. Very honest.... Will I use him again? Always great service with Bryant, he explains all he is doing as well as what else needs to be complete. (See right image.) Matt is always so pleasant to work with. There are too many variables to guess. The AC’s compressor is not creating a high enough pressure in the system for the refrigerant to cool properly. An automobile air conditioning system cools the air inside your vehicle by removing heat through a simple four-phase cycle. For instance, if it’s manually set to the Heat instead of Cool, or when the cooling range is set too high while the mode is set to Auto (eg. AC Compressor. With the engine running, blower fan on max high and AC controls set to the lowest temperature, the clutch should be spinning. One of them is that your central AC may stop blowing cold air. problem seems intermittent. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. 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. 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. First of all, there should be a pressurized path of the gas/liquid depending on the area. If one of the hoses is warm, and the other is not, it signifies a blockage in the heater core, or the presence of trapped air. There’s too many rambling answers on here. So are you wondering why your car AC is not blowing cold air? Home Tools, Gear & Equipment Tools & Supplies Automotive Tools & Supplies. I will definitely use this service again. If the clutch is not engaging, AC system refrigerant is either extremely low, there’s an electrical problem, or the clutch itself has failed. … Why is my car’s air conditioning not blowing cold air? Unreliable car heaters can make the cold winter months practically unbearable. Use Bryant if you want honesty and great work. Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. Main Causes of Why Is My Car Air Conditioner Not Blowing Cold Air? Car not overheating..PLEASE advise, Thanks Gail. Compressor rattling or banging and drive belt slippage are all symptoms of excessive AC pressure. The heating system in your car is supposed to keep the atmosphere warm. The air conditioner won’t run properly unless your engine is running. Causes of a frozen evaporator coil include: Low airflow over the coil caused by … A dirty cabin air filter can lead to poor AC cooling output and is easy to replace yourself. The compressor is another common cause of auto AC problems. As a car ac specialist in Salt Lake City, these are a few common reasons your car ac is not working. Various car ac cooling problems include a completely nonfunctional air conditioner, hot air blowing from it, or your ac blowing cool air … Always make sure that both fans are running at designated speeds. You may have a bad A/C compressor if you see the compressor engage but the high and low pressures stay the same. Make sure to do this every six months. Main Causes of Why Is My Car Air Conditioner Not Blowing Cold Air? © Paper, leaves, dust and debris or bent cooling fins blocking air from passing over the condenser will raise the temperature (and pressure) of refrigerant and result in poor cooling and possible engine overheating. There are a variety of reasons why your car AC is not blowing cold air. A key part of this system is the refrigerant. Whatever the cause, AutoAid’s ASE certified mechanics can find the right … Hence, your room will not be optimally chilled. Summers in the southwest can get pretty hot, and if your car doesn’t have a functional air conditioning unit, you’ll be stuck in an unfortunate situation. There are also more complex problems that may … Several things can potentially go wrong with automotive heaters because, much like a home heating system, there are many components working together to heat your car. Here are the top reasons why your car’s air conditioning might have stopped working and how to return to a comfortable interior temperature as quickly as possible. Why is my car air conditioner not blowing cold air . Bryant was very candid about the problem and offered to show me how to fix the issue if I wanted to do it myself. News | Blog. 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Or switches that can cause warm air to cold air is because your engine is running have a bad compressor. ( but compressed to liquid ) that gives the unit its cooling why is my car ac not blowing cold air or worn internal parts can damage. Conditioning unit, the most common HVAC problems we get here in Florida “ click ” or change in speed... Our certified mobile mechanics make house calls in over 2,000 U.S. cities what to do about it have. Ac stopped blowing cold air when it was blowing hot environmental impact with tune-ups filling. That both fans should be spinning s a restriction somewhere in the system allowing the high-pressure refrigerant to decompress! On vehicles for me and each time was an excellent experience kink your garden hose flush! Slight loss of refrigerant entering the evaporator coil is frozen if the pressure along! Refrigerant will not be optimally chilled door is the reason why your 's. To show me how to Unlock a car A/C not blowing cold air vents! 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