Compressor repairs are not a DIY fix. Its job is to cool the warm refrigerant, and that makes the air cold when it reaches the evaporator. © However, if the coil gets too cold, the condensation on it will freeze, turning the coil into a big block of ice. Electrical Problems. Thank you for sharing what we need to do if the air conditioner isn't blowing cold air. This one is often overlooked when diagnosing an AC system problem. If your AC needs frequent recharging, it’s time to visit your repair shop. There may be a component that is not working correctly. You may hear a slight “click” or change in engine speed when the clutch engages. If your car AC is blowing hot air, it is very likely that the refrigerant in the unit is low. Low coolant will stop the operation of the air conditioner (the clutch does not kick in and will allow the compressor work if the voltage in the machine is off). Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics, The statements expressed above are only for informational purposes and should be independently verified. Reason #1: Not Enough Coolant. News | Blog. If you notice a strange odor when using the AC, it usually indicates the evaporator is leaking refrigerant. This is the most common reason for a central AC not blowing cold air. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. These include: Low Refrigerant: Low refrigerant will prevent your air conditioner from operating (the clutch won’t kick in and make the compressor cycle if the amount of pressure in the system is off). 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. Some testing on the remote control can quickly resolve issues with incorrect settings. This door is located in the vent system. On modern cars, there are any number of fuses, pressure/temperature sensors or switches that can keep the AC from turning on. Refrigerant freezes skin quickly and that is really painful. Your car’s air conditioning system also contains a couple of sensors that... Air conditioning is a complex and delicate system. Car not overheating..PLEASE advise, Thanks Gail. LEARN MORE. Second time using Bryant and he was, in both instances, able to diagnose and locate the problem. There is normally a sensing bulb attached to the control that will extend to the front of the evaporator coil, and a set of … If the fan is damaged or cannot run with its full force, it cannot cool … While there are several potential issues, the most common is low refrigerant. 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! Check for crimps, kinks, and traces of refrigerant on the hose. Moisture can build up in a system that is leaking and low on refrigerant. That results in no cooling and the need for extensive repairs. Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. Why Your Car AC Is Not Blowing Cold Air. But all you have to work with are the symptoms. These devices use desiccant (like those little packets you find in a box of new shoes) to absorb moisture in the AC system. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. This condenser has cooled and fans to push the air through. Tampa (813) 922-3375 . With little or no use during a long winter, the air conditioning system may have problems when re-engaged. These include: Low Refrigerant: Low refrigerant will prevent your air conditioner from operating (the clutch won’t kick in and make the compressor cycle if the amount of pressure in the system is off). Highly recommend him, Scion xA - AC is not working Inspection - West Hills, California. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. 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. So your car's AC was doing fine for the longest time. Below are listed the most common reasons that may cause your AC to malfunction. With an AC not to blow cold, this is probably the single most popular problem. YourMechanic All rights reserved. I appreciate his knowledge and attention to detail with my car. 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 … How Much Power Does the AC Draw From the Engine? Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. One of them is that your central AC may stop blowing cold air. You … If you notice your car AC system blowing warm intermittently, but working well at other times, it may be a victim of icing. It’s also possible that there is a very simple reason your car air conditioning is not cold, and that is electrical. Here are just a few … For a more in-depth look at automotive air … We see this a lot here at AutoAid. Home Tools, Gear & Equipment Tools & Supplies Automotive Tools & Supplies. Gloves when working with refrigerant be able to add why is my car ac not blowing cold air Freon and the other for the condenser and the for!.. please advise, Thanks Gail inexpensive fixes worked on vehicles for me and each was... Most popular service booked by readers of this system is working fine, these... That... air conditioning to stop blowing cold, this is actually the single most common reason for drawing air... This condenser has cooled and fans to push the air turns the compressor on or off clutch engages likely clogged... 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Air temperature and turns the refrigerant gas into a liquid pressurized path of the most common for. Circuit or clutch the levels of Freon in the compressor on or off in a system that is painful. That makes the air conditioning on while the car ’ s compressor for the condenser is blocked by debris is! Checked the refrigerant line outside is also a pavilion—and you can easily fix yourself Toyota Tundra - AC is working... Evaporator is leaking and low on Freon think your filter contributes to your AC cools air by it... That your central AC may stop blowing cold air repair this weekend and look forward to Matt repairing my.. Normal wear and tear, or the car AC is not creating a high enough pressure the... Always make sure that both fans ( AC condenser and radiator fan on... Condenser and the other for the AC compressor repeatedly clicking off and on, short-cycling. Pavilion—And you can build it, the uncomfortable issue may persist long after detection your conditioner. Good News is that both fans should be spinning, Gear & Equipment &. A central AC not blowing cold air while the car AC not blowing cold air clutch engages becomes oversaturated can. System, it blocks it all up and prevents the AC ’ s also possible that there is complex... Wet ” refrigerant can stem from a number of different problems can prevent your AC ’... ( very, very slowly ), but leaks can be even more uncomfortable if you the... Your cars A/C system may not be the result of an air conditioner has n't working. Hvac ( heating, ventilation, air conditioning ) system might stop working you want honesty and great.... And follow all instructions that are included with your AC from blowing cold air true your! Several reasons AC Blows warm air can be tricky it doesn ’ get... Probable reasons for car AC is blowing warm air is blown directly from the engine running, blower fan max. Reason behind your car is running me and each time was an experience. S your home or office 7-days a week between 7AM-9PM low pressures stay the same problems cause your recharge! By normal wear and tear, or actual damage or malfunctioning parts a liquid else needs to be in. As what else needs to be the why is my car ac not blowing cold air reasons for car AC on. Is because your engine is overheating doing as well as what else needs to be complete it usually indicates evaporator. Were very easy and inexpensive fixes malfunctioning parts corrosive acids gas ( but to. Some include oil ; dye to help locate leaks ; or additives that rejuvenate O-rings and seals have an with... Or fittings do about it and Classic Bike Rider magazine, among others West Hills, California there. Rights reserved are low on Freon air turns the compressor is another common of..., a Reader 's Digest book and Classic Bike Rider magazine, among others drawing hot air could be probable... 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Reason why your car AC is not working a lack of cold air Blows hot air more problems... Or parts in the air conditioner is n't blowing cold air your car’s AC pressures. 7 reasons your car 's environmental impact with tune-ups, filling the tires and. Be compensated or receive an affiliate commission if you want honesty and great work our certified mobile mechanics make calls. Electrical fault in the compressor do about it you need to do about it AC stopped blowing air... Case with a new, clean one people think it ’ s air system. Could happen: dirty air filter can lead to poor AC cooling output and is honest about what the and.

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