{"id":31743,"date":"2022-09-27T08:06:53","date_gmt":"2022-09-27T00:06:53","guid":{"rendered":"https:\/\/carsome.my\/news\/item\/car-air-conditioning-problems"},"modified":"2023-05-03T16:42:26","modified_gmt":"2023-05-03T08:42:26","slug":"car-air-conditioning-problems","status":"publish","type":"post","link":"https:\/\/www.carsome.my\/news\/item\/car-air-conditioning-problems","title":{"rendered":"Keeping Your Car\u2019s Air-Conditioning Cool &#038; Problems to Look Out For"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Nobody really cares how a car\u2019s air-conditioning system functions\u2026 until it doesn\u2019t. Cue chaos and pandemonium if we ever have to endure a day without it in the scorching and humid tropical weather here.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sweltering, sweaty and oftentimes searing, the air-conditioning system in the car could very well be described as an essential, depending on who you ask. Let\u2019s just say it\u2019s more of a necessity than a luxury. Furthermore, the system also filters the air circulating in the cabin, ensuring it remains clean and healthy for the occupants.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To nobody\u2019 surprise, your car\u2019s air-conditioning system is quite a complex combination of components. While it\u2019s best left to the experts, learning a little about it might help troubleshoot if it doesn\u2019t flow cool air anymore or isn\u2019t functioning as optimally as before.<\/span><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-28790\" src=\"https:\/\/carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1.jpg\" alt=\"adjusting car air con\" width=\"2121\" height=\"1414\" srcset=\"https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1.jpg 2121w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-300x200.jpg 300w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-1024x683.jpg 1024w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-768x512.jpg 768w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-1536x1024.jpg 1536w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-2048x1365.jpg 2048w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-150x100.jpg 150w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-696x464.jpg 696w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-1068x712.jpg 1068w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-615793348-1-1920x1280.jpg 1920w\" sizes=\"(max-width: 2121px) 100vw, 2121px\" \/><\/p>\n<h2><span style=\"font-weight: 400;\">How Does It Work?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Some of us might recall a lesson during science class back in school regarding a matter changing states. This is referred to as a phase change. A liquid such as water turning into a solid and becoming ice is an example of a phase change.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Phase changes can be controlled by manipulating the heat stored by a type of matter. The fundamentals of your car\u2019s air-conditioning system operate based on the same principles of phase changing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The air-conditioning system manipulates a refrigerant by means of pressure and temperature, alternating the medium between a liquid and gaseous state. It might seem counterintuitive for those with a basic understanding of chemistry as the refrigerant can be both superheated and low-pressure but this is why it\u2019s the perfect medium for cooling the air.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00a0This is how the refrigerant functions within the air-conditioning system.<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> The refrigerant enters the compressor as a low-pressure but superheated gas, its chemical composition allowing for the logic-defying state.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> The compressor pumps the refrigerant towards the condenser, where it is cooled and condenses into vapor before transitioning into a cool, high-pressure liquid. This phase change produces hot air which the condenser blows away via the external electric fan.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> From the condenser, the liquid refrigerant arrives at the metering device. The device lowers its pressure and the refrigerant once again reverts into the vapor state.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> The vapor enters the evaporator. Here, it absorbs heat from the space being cooled. The heat causes the vapor to boil and initiates another phase change back to a superheated low-pressure gas. This process produces cool air that\u2019s blown into the cabin by the blower.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> The superheated, low-pressure refrigerant makes its way into the compressor for the cycle to start all over again.<\/span><\/li>\n<\/ol>\n<p><strong>Read More:<span style=\"color: #ff9900;\">\u00a0<\/span><\/strong><span style=\"color: #ff9900;\">C<a style=\"color: #ff9900;\" href=\"https:\/\/www.carsome.my\/news\/item\/car-engine-overheating\"><span style=\"color: #ff9900;\">ar<\/span> Engine Overheating: Here Are the Causes &amp; What to Do When It Happens<\/a><\/span><\/p>\n<h2><span style=\"font-weight: 400;\">The Components of an AC System<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Although on a much smaller scale, the air-conditioning system in a car comprises all the components found in the air-conditioner unit in your home, just much smaller of course.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The primary components are an evaporator, compressor, condenser, expansion device and a blower. Here we\u2019ll take a look at the core components and their functions.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">1. Compressor<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Often referred to as the heart of the system, the compressor\u2019s function is pretty self-explanatory. As the name suggests, it creates pressure within the system to convert the refrigerant from a vapor state back into liquid form, allowing it to continue flowing within the condenser. The compressor is powered directly from the engine\u2019s crankshaft via a pulley and belt.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">2. Condenser<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Next up is the condenser. It serves as a radiator to cool the refrigerant post compressor. Again, as the name suggests, it provides condensing (lowering temperature) to further cool the liquid refrigerant. The radiator fan or an electric fan in the engine bay helps the process.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">3. Expansion Valve<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">After the condenser, the expansion valve functions to expand the high pressure, low temperature liquid refrigerant to release pressure in the system before it flows into the evaporator.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">4. Evaporator \/ Cooling Coil<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This component resembles a radiator as well and is the piece that\u2019s often found behind the dashboard in the cabin. The evaporator takes heat from the cabin and converts the liquid refrigerant from the expansion valve into vapor. This phase change cools the air in the cabin.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">5. Receiver-Dryer<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Located just before the compressor, the receiver or dryer is a safety device that prevents some of the refrigerant from flowing back into the compressor and causing damage. Therefore, this component converts all the remaining liquid refrigerant into vapor before it flows into the compressor to repeat the cycle.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">6. Refrigerant<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">If the compressor is the heart of the system, the refrigerant is very much the blood. It\u2019s a fluid with an extremely low boiling point and serves as a heat exchange medium.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Common Problems<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Your air-conditioning system isn\u2019t immune from issues. While the most common one would obviously be the air not being cold, the source of the issue could stem from a number of components.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Hence, it\u2019s a good idea to form a clearer understanding of some common issues with the system and how to accurately identify the source.<\/span><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-28791\" src=\"https:\/\/carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1.jpg\" alt=\"drinking cold water in hot car\" width=\"2119\" height=\"1414\" srcset=\"https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1.jpg 2119w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-300x200.jpg 300w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-1024x683.jpg 1024w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-768x512.jpg 768w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-1536x1025.jpg 1536w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-2048x1367.jpg 2048w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-150x100.jpg 150w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-696x464.jpg 696w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-1068x713.jpg 1068w, https:\/\/www.carsome.my\/news\/wp-content\/uploads\/2022\/09\/GettyImages-1308361907-1-1920x1281.jpg 1920w\" sizes=\"(max-width: 2119px) 100vw, 2119px\" \/><\/p>\n<h3><span style=\"font-weight: 400;\">1. The Air Isn\u2019t Cold at All<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Usually, this means a refrigerant leak. That\u2019s the easy part though. The tough part is finding the source of the leak as it could be anywhere along the system. Refrigerant leaks aren\u2019t easy to locate due to the nature of the medium being designed to evaporate when exposed to the atmosphere.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A car air-conditioning specialist will probably use a refrigerant leak detector or a fluorescent leak tracer dye to identify the source of the leak. Once identified, fix it or replace the faulty component and off you go.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">2. The Air Is Cool but Not Cold<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This is again likely related to the refrigerant, or rather a lack of it. A slow leak will see the system\u2019s pressure drop and prevent the clutch from activating the compressor\u2019s cycle.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The compressor\u2019s clutch is also prone to failure and will need to be refurbished. If it fails, the compressor can\u2019t be triggered to pressurize the system.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On the other hand, if the refrigerant levels are sufficient, it could mean a clogged condenser.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">3. No Air Blowing from the Vents<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">There\u2019s no clear-cut fix for this as there are a number of possibilities. It could be that the blower isn\u2019t receiving any electrical power or the blower itself has broken.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Blocked intakes could also be the culprit. Air enters the cabin via two sources; vents below the windshield or intakes in the cabin for air that\u2019s recirculated within the cabin itself. If either of the intakes are clogged such as by leaves or debris, there will be very little to no air blown through the vents.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">4. The Air Smells Moldy<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">If the air from the vents has a moldy or foul scent to it, there\u2019s likely bacteria growth in the system. This one mostly affects older vehicles or those that always have the air-conditioning system on full blast as the extra moisture promotes bacterial growth.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Try replacing the system\u2019s cabin filter for starters. It\u2019s an easy job and can even be done yourself depending on the car. If that doesn\u2019t eradicate the stench, an air-conditioning specialist will add an antibacterial chemical into the evaporator area that eliminates all the bacteria.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">5. The System Makes Weird Noises When Switched On<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The air-conditioning system is relatively quiet when in use. In fact, the only noise should be the air being blown out the vents. Depending on the noise, it could be a small issue like a squeaky compressor accessory belt or a major one such as the compressor\u2019s clutch failing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This one\u2019s best left to the experts. Let them identify the source of the errant sound and advise you on the next course of action.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">6. Water on the Front Footwell<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">There is a drain line along the evaporator or cooling coil behind the dashboard that\u2019s meant to collect moisture from condensation and channel it out of the vehicle. Over time, the drain line can become clogged. If this happens, the condensation will drip out and fall onto the carpeted floor in the front footwell.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If left unchecked, the water in the footwell will not only give off that wet carpet smell but also lead to rust on the floorboards. A specialist technician will identify the source of the clog and fix it accordingly.<\/span><\/p>\n<p><strong>Read More:\u00a0<\/strong><span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/www.carsome.my\/news\/item\/when-to-overhaul-car-engine\">What Is a Car Engine Overhaul and When to Do It<\/a><\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Practise Regular Maintenance<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Most of us are sticklers with the engine\u2019s scheduled maintenance like oil changes and spark plugs replacements. Understandably, the air-conditioning system doesn\u2019t always get the attention it deserves but we implore you to change that mindset.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Just like every other key system in your vehicle, the air-conditioning system requires periodic maintenance as well.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For starters, always run the system for a few minutes at least once a week. However, this being Malaysia we\u2019re pretty sure that\u2019s not an issue for most of us.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Next up, remember to have the system inspected by an air-conditioning specialist at least annually. They\u2019ll give it a proper once-over and identify any components that require servicing or replacing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Each vehicle will have a recommended service interval by the manufacturer as well. This will cover aspects such as replacing the refrigerant and cabin filter as well as servicing the compressor if needed or fitting a new drive belt.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Look after your car\u2019s air-conditioning system and it\u2019ll keep you cool for years to come.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Is your car air conditioner blowing warm air? Check out these common aircon problems and possible causes.<\/p>\n","protected":false},"author":39,"featured_media":28790,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[117],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Keeping Your Car\u2019s Air-Conditioning Cool &amp; Problems to Look Out For<\/title>\n<meta name=\"description\" content=\"Your car air conditioning system can get strained in our hot climate and malfunction. 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