Your air filter traps dust and debris in the air so that the inner workings of your AC system (and the air you breathe) stays clean. The result will be an air inside the cabin beyond expectations. We can call the compressor the heart of the air cooling system. Lightly vacuum the evaporator and condensing coils to remove any potential clogs. The reason the fan shuts off during this process is so the system doesn't pull the cold air from the outside across the coil while the hot refrigerant circulates. “Car ac not blowing cold air when hot outside” or “car ac not cold enough”: This happens due to two reasons. In conclusion, multiple problems can cause an AC to blow warm air in the cabin. To find the true problem, you’ll need a professional A/C technician to check out your AC system. Thus, a slipping clutch is a problematic component. Basically inside AC is blowing air but it isn't cold. It turns out your air conditioner has some technical issues. An air conditioner cools a room by heating the world; the indoor coil is cold and the outdoor coil is hot, it's dumping the heat that used to be inside, outside. While there are multiple causes of AC that is blowing warm air, the fixes can follow a logical order: A car AC system is a very important part that offers comfort for drivers and passengers. Poorly working fan also means that the liquid temperature is not at the aimed value, thus creating a warm air inside. That’s how you get chilly air inside your car! So no compressor = no refrigerant. If that’s not what is causing it, check the engine’s condenser. Possibility #2: Reasons your heat pump is actually blowing cold air. Don’t always think about the money spent on fuel because buying a new compressor will cost you more than this. If it’s set to “on”, that means that the fan will stay on all the time, even when your air conditioner isn’t actually cooling your home.This setting helps circulate air throughout your home, but can lead people to think that their AC is blowing warm air (and also use much more energy). It is designed to blow cold air. The air conditioner pump, called the compressor, sucks warm air out of your home, removing it outside with the help of a special fluid, refrigerant. People in the home may feel clammy or sweaty as a result, as the air conditioner will be unable to dry out the air to make it comfortable. Your AC actually cools your home’s air by removing heat from the air inside and dumping that heat outside. It’s up to you how you maintain the system and how much care you have! How can you fix an AC that blows warm air? Secondly, all the components should function accurately. Thus, the coils will be freezing over. Heat is absorbed by refrigerant in your indoor AC unit and is then carried outside where it’s dumped into the outside air via your outdoor unit. You might not think your filter contributes to … The exterior of the window unit uses a second fan to blow outside air over the condenser to cool it down. Your thermostat’s fan setting controls the fan in your AC’s inside unit (called the air handler). In reverse mode it does the opposite: the indoor coil is hot while the outdoor coil is cold; it heats a room by cooling the world, it's extracting heat from cool outdoor air, weird right? Dirty air filters cause warm air just like blocked air returns do. Here the pressure drops approximately 10 times lower. When the refrigerant is leaking it is difficult to see it because it becomes a gas, but a check of the delivery system can always help; thirdly check if there are any issues with the condenser/cooling fan placed in front of the car – if there is debris or suspect things covering it try to clean them; next step is to check if the compressor is engaging properly – press the AC ON button while you can check the sound like a “tick” when it’s working. If that setting is set to inside/ Cabin Air (recirculation) you are not getting air from outside, instead you are just recirculating air within the passenger cabin. Dirty air filter. The most common reasons that AC blows warm air in car are leaks in the air cooling system, broken compressor, worn-out clutch or electrical wiring problems. It results in an interruption in the flow of air. Like we said above, the compressor is connected to the engine via a belt. The electrical layout of a car is very complex and very difficult to diagnose if you don’t have the correct expertise. There are 2 places an outside AC unit can lose power: At the circuit breaker. What Are The Symptoms Of A Bad Voltage Regulator? Each of these problems has its own level of gravity thus different costs of repairing. TheCarsGuide.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. The outside unit’s job is to disperse heat gathered from your home’s warm air and release it outside. If the fan is blowing, but the air seems warm or just not cool, check to see if your thermostat is set to “on” or “auto”. Therefore, if the relay it’s not working properly, the electrical circuit it’s not closed and there is no current to engage the clutch. Your AC system cools your home’s air in cycles. Doing so could damage your AC. A coil is inducing a magnetic field that is causing the clutch plate to connect to the compressor shaft. Refrigerant level low. This means the air coming from your AC vents will be warmer than usual. You may also see an error message on your thermostat, or a blinking LED light on the furnace control board. If you’ve already checked your thermostat, it may be time to clean. Solution 1: Clean the outside unit at LEAST once a year using a garden hose on a gentle setting. A broken condenser means that the gas might be still turned into liquid, although the temperature is higher than the desired one. This will increase car fuel consumption. So you decided to go back inside, but you still feel warm. As the air blows through it, it passes over the supercooled coils inside to cool down.The process will transfer the heat out of the air and into the supercooled coils. As a result, you’ll feel warm air coming from the vents. Encased in a closed metal loop, this refrigerant offers a shuttle for this heat exchange. If your unit is not blowing any cold air, the sensor may have been knocked out of its position. But if your outside unit is clogged from debris then it could decrease your AC’s performance which could cause warm air to blow into your home. Change your thermostat to “auto” if it’s currently set to “on” to avoid this. Try to fix it first, before buying a new AC compressor which can be expensive. I checked out the outside unit and made the following observations: 1. This should be able to drop the pressure almost 10 times so that gas at a cold temperature is formed. If the outside unit loses power but the inside unit doesn't, it is possible that you could experience warm air coming out of your air vents. If the outside unit’s breaker trips, then the inside unit will continue to blow air in your home, it just won’t be cool air. Check the car electrical schematics to find the location of the fuse and test it if you have the proper knowledge. dirty air filter blocks air from reaching your indoor AC unit. Your last option is to turn on the air conditioner to beat the hot weather. If breakers trip after resetting or the breakers are on normally yet warm air blows through your vents, give us a call to schedule air conditioning repair. This might be an easy and inexpensive fix of the AC blowing warm air in the car. Your compressor sits inside your outdoor unit and plays a huge part in the AC’s “heat transfer” process. The compressed air, it’s usually at a high temperature with high pressure (the pressure usually depends on the outside temperature). Then your summer might not as pleasant as you have imagined. A defect can be hidden, and as an effect, the fuse is blowing. I had it serviced about 2 months ago and all seemed fine at that time. Air Filter Is Dirty. When there is debris blocking the outside of your AC unit, your AC will struggle to cool your home’s air efficiently. Any leaks in these components will cause a lower pressure than wanted. A dirty evaporator coil will cause your AC to blow warm air. In a properly working air conditioner, a fan will draw air over the evaporator coils, where it is cooled, and then be re-circulated back into the room. The position of the fan, it’s right in front of the car. Now, this may sound counterintuitive, but to properly cool your home, your thermostat’s fan setting should be set to AUTO, not ON. Check to see if the breaker for your outside unit got tripped. If your furnace is blowing cold air, or is not operating at all, a component called the fan limit switch may have malfunctioned. can coat your outside AC unit. firstly check if you have a good system pressure – if the pressure is too low you need to add refrigerator in the system; secondly you can do a visual inspection of all the pipes/hoses/interconnections of the AC system. Fixing this problem may be as easy as opening or unblocking the return vent. Dirty AC Condenser Coils: Why You Need Them Cleaned in Phoenix. Inside the cabin you will feel cooler air, but not as cold as you desire. The same effect can have a blockage. The condenser is the first component that is cooling the gas and as an effect this one takes liquid form. Your email address will not be published. The fan is blowing cool air out the top (as … For instance, a broken compressor it’s not able to keep a constant pressure in the system. 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