It’s time to dive into some nice, cold air. Here's how a compressor clutch works and how to diagnose a failure. Before I took it there, I had burned out the AC Compressor. Required fields are marked *. Let's start with the refrigerant (r134a) inside the system. Sounds great doesn't it, modern inventive man at his best, makes the older interior control Sounds great doesn't it, modern inventive man at his best, makes the older interior control compressor seem positively Stone Age. To run this clutch compressor, the engine is connected directly to the pump rotor of the compressor using a belt. Reading Time: 6 minutes . And when this happens to the refrigerant, it goes to the evaporator. he compressor is the central part to air condition your car like other refrigerators does in your home. Typically, replacing refrigerant and repairing leaks is the least costly air conditioner repair for cars. No, but it will work very slowly if the fan was part of the A/C system that was disconnected. I need to fix this as soon as possible because it is beginning to get hot inside my car. It will turn out a gaseous state again, so the refrigerant absorbs the heat from the warm air. An air compressor is a trigger to start the AC system and an overseer to keep the cycle going. Most auto repair shops order the car An air conditioner (AC) in a room or a car works by collecting hot air from a given space, processing it within itself with the help of a refrigerant and a bunch of coils and then releasing cool air into the same space where the hot air had originally been collected. The condenser is the component that converts gas into cooled liquid. Save my name, email, and website in this browser for the next time I comment. Your air conditioning (AC) compressor is one such part that is used every day, and you An Air Conditioning compressor pressurizes the freon in your AC system. There are a few options for power, though the most often used is either battery power or a 12v adapter that plugs into your car or truck’s 12v receptacle. Your car's air conditioner is very similar to the AC unit in your home, and it uses many of the same types of components. The job of compressor is so that it converts low pressure refrigerant from evaporator to high pressure gas before it enters into the condenser. How Does a Car’s Air Conditioning Work? Over a certain number of years, this stress will wear down the compressor and cause it to eventually malfunction. There is a receiver drier where the high-pressure liquid travels in it from the condenser. The refrigerant enters AC compressor through sunction line. Portable Car Air Conditioner Buyers Guide. When using a portable car AC or cooler fan, it is important to know how they operate. Cooler fans use water or ice (or a combination) to produce cold air that is then blown around the cabin by a fan. When the refrigerant enters the evaporator and turns out into the liquid, the fan starts to blows warm air over it. Sometimes, a problem occurs in the ac system, and we have to repair it. You have entered an incorrect email address! Check the fan system, or the air if they work correctly. How does the air get out of the seat so that it can cool the person sitting in it? Your vehicle’s compressor, powered by the serpentine belt, compresses the refrigerant into a liquid, putting it into a high-pressure state. It has a blower fan that blows air over the evaporator. This is essentially how air conditioners work. However, there are certain ways that you can save this money, even if it requires some additional work. If there is not any visual problem, check the compressor if there is any damages or leakage. Compressor Clutch Basics . Whether the clutch operates or not will all depend on the AC itself. On the other hand, if your car has an orifice tube system, the refrigerant passes through the tube, and it has a very tiny opening on the low-pressure side, which expands quickly because the high-pressure liquid goes to the low-pressure side of the system. Your email address will not be published. The compressor of the car air conditioning system is driven by the crankshaft of the engine through the belt drive. To collect the heat, the refrigerant has to be of higher temperature than the air available outside the car. When the compressor is not charged with refrigerant, the swash plate is held at the minim… An electric car does things differently because there is no engine, and so delivering power to the AC and just about everything else is determined by the amount of stored battery energy. Doing so will help dehumidify the air, reducing fogged up windows. Once the desired temperature is reached, it automatically reduces its capacity to maintain the desired temperature. Packard invented automotive AC all the way back in 1939, and in 1940 was the first car company to offer factory-installed air conditioning. An air conditioning system was first used in automobiles as early as the 1940s. AC Compressor is one of the most important parts in an air condition system working in your car. Further, it goes back inside and the process is repeated continuously. What Does Air Conditioning Do? The temperature changes in those different states. Then the compressor moves the refrigerant into a pipe. It only removes hot air from your car. This system is controlled by a main computer which sits in the dash and also houses the controls for the mode and temperature settings. So, how long does an AC compressor last in a car? If you have ever used a can of compressed air to clean computer components, you will know that the bottle gets very cold in a short amount of time. No compressor means no AC. If there is any leakage, the ac will not work correctly. Learn how does a car ac compressor work with brief detais and steps to analyze and make proper decision to improve and repair any part of car cooling system The other components are compressor clutch, ac compressor drive ring, evaporator core, passenger compartment, expansion valve, discharge valve, compressor relay, air conditioning fan, compressor belt, etc. How Portable Car ACs & Fans Work. Before becoming a professional writer, Michael worked as an English tutor, poet, voice-over artist, and DJ. The Indian Wire, owned and managed by Sorting Hat Media Networks Private Limited, is an independent news website covering latest updates on politics, business, technology, sports etc. For more depth, let’s go over the whole system again to give you a clearer picture of what an AC compressor does. The process will create a lot of heat and damage if it’s not properly lubricated. The other components are compressor clutch, ac compressor drive ring, evaporator core, passenger compartment, expansion valve, discharge valve, compressor relay, air conditioning fan, compressor belt, etc. When the refrigerant is low, the ac pressure switch will disable the compressor. How Does a Car’s Air Conditioning Work? A vehicle’s air conditioning system does not create cold air. It also works like a radiator and can take advantage of the air. Most car AC systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit. Discover how your car’s ac works using freon/refrigerant and what to do if your air conditioning starts malfunctioning. In the case of Tesla EVs, for example, the AC compressor is located at the front of the car and draws power from the Energy Storage System, or ESS, in the back. The compressor then squeezes the gas to pack together molecules to increase pressure and temperature of refrigerant. These are expensive parts and systems, and one of them – the evaporator – is usually behind the dash which requires a lot of rip-apart work. An electric car does things differently because there is no engine, and so delivering power to the AC and just about everything else is determined by the amount of stored battery energy. Driving around on a hot day in a car without a working air conditioner can be uncomfortable and even dangerous in extreme heat. How Does It Work? You will see a low- and high-pressure hose, a drive belt, and a couple of bolts, which is at least 12 millimeters. You should test once in a month in every component of your ac system. "The air conditioning system in your car is comprised of a compressor, condenser, expansion valve and evaporator. Also, the switch should be strong enough because it controls the high and low-pressure sides. How do air-conditioned seats work? A regular wiseGEEK contributor, Michael enjoys doing research in order to satisfy his wide-ranging curiosity about a variety of arcane topics. After those processes, the high-pressure liquid(pressure gas) in the expansion valve will go back to the evaporator. The Basics. Bad Car AC Compressor Symptoms. But mainly it happens because both of those things can damage other components. Thank you for sharing what we need to do if the air conditioner isn't blowing cold air. Air conditioning has two main purposes. The orifice is looking like a tube, and the expansion valve is like a small drier. The problem may happen because of electrical chaos. If you want to perfect combination of clutch and compressor then if any of them fails to work, replace both of them. Mostly recirculated from the interior of the car, some fresh air is also included usually around 15-20% of total airflow. The drier removes contaminants and moisture from the ac system. In evaporator, the refrigerant is in form of a low-pressure gas. There are a lot of things to know about the car. Your car already has the ductwork and the fusebox AC capability, but you’d need to add as a minimum a compressor, a condensor (in many cars it’s a part of the radiator, in many it’s a seperate small radiator), and an evaporator, as well as the control panel. 2. Compressor Rotating. All metals expand as they heat, and different metals -- and different thicknesses of metals -- expand at different rates and by different amounts. However, there are certain ways that you can save this money, even if it requires some additional work. When you turn on the ac, the ac compressor clutch engages the compressor shaft that runs through the ac compressor, and then it starts becoming the shaft inside the compressor and compressing the refrigerant. This particular refrigerant was specifically created for the automotive industry sometime in the late 1980’s which is slightly different than home or industrial refrigerant applications. Looking to share some feedback or suggestion? Most auto repair shops order the car parts from online dealers and sell them at a higher price. Before repairing a bad ac compressor, you need to know the symptoms accurately so that it won’t make any delay. 3 Signs That Your Car's Air Conditioner Needs Freon ️ . Sometimes, you need to replace the whole compressor. How does an automotive AC expansion valve system work Many car makers now use automotive AC expansion valve in their AC systems. After the refrigerant leaves the evaporator core, it returns to the ac compressor, and the whole thing is just going to keep repeating as long as you turned on your ac. Check to make sure the clutch assembly — located at the front end of the AC compressor — is engaging. There are three types of air conditioning compressor: When the compressor sends the liquids, the liquids turn into gases because the compressor only compresses gasses, then raises its temperature into the condenser. Most people who wonder what does a bad ac compressor sound like don’t know about the moisture leaks in the AC compressor. Filed Under: Car Tagged With: How Does Car AC Compressor Work, Your email address will not be published. Understanding how AC works needs someone better understanding of the whole process. If you have a better idea about each component, you will understand how the compressor work. 4 min read. Since car air conditioning systems get turned on and off constantly, this power fluctuation puts a lot of stress on the compressor. If the compressor clutch is not engaging, there are many possibilities. To check this, set the ac max and wait for a while. Many people think that the compressor creates cold air, which is not valid. In short, the refrigerant turns into a high-pressure liquid state, and when it leaves the condenser, it still stays in wet condition. To many car owners, the inner workings of their car's air conditioning systems is somewhat of a mystery. How Does an AC Compressor Clutch Work? are professional-grade shop manuals—period. In the case of an undercharged system, your AC compressor cannot be properly lubricated. Last week, I explained why a guy from Massachusetts became so obsessed with having working A/C in his vintage cars and also described why the A/C needs of a vintage car are different from those of a car … July 6, 2020 by Peter Caldwell Leave a Comment. What Does an AC Compressor Do? In this article, let’s take a look on how does the compressor inside an air conditioner work and how does it help in cooling your car. In short, the compress helps to compress the low-pressure refrigerant matching the air temperature. There is a high-pressure side, and a low pressure side to all AC systems. How Car Seats Can Keep You Cool. The car ac compressor needs regular testing for better service. With the engine running, blower fan on max high and AC controls set to the lowest temperature, the clutch should be spinning. So the gasses turn into liquid again. After inspecting the compressor, check the belts and pulley if they are in good condition. The orifice and expansion valve works the same and allows the high-pressure liquid and refrigerant to pass a minimal side and the low-pressure side. Depending on your car, labor prices can vary greatly. Do they still use a central car air conditioner or is the air conditioner located in the seat itself? An air conditioner does not actually work by cooling air, but rather by removing heat and humidity from the air. We all know how hot the Texan heat can be. The AC system in your vehicle may seem complicated, but it's not. It may have leaks or lack of gas or any other reason. When gases are compressed, they get hot because the molecules are How Does an AC Compressor Clutch Work? The compressor is another common cause of auto AC problems. Car air conditioners work to make our rides more comfortable and our journeys a lot more worthwhile. After that, it cools down the air, and the air travel through the dash and comes out from the vents. Running the air conditioner will also help clear up window condensation. The same process can be found in a window air conditioning unit or an industrial unit. So you need to replace the clutch or repair it. The condenser is the most natural part of the AC system, which you can check anytime you want. A smoothly running ac will make no noises; also, the fan will work properly. by Isaiah David . The expansion valve is attached to the evaporator, and it defines the temperature of the evaporator, and the lid allows the refrigerant to pass to the evaporator. Refrigerant is pulled into the compressor, as a gas, on the down stroke, and pushed out of the compressor on the stroke. Does a dead AC compressor also mean the heat won't work? Condenser – It is the device looks like a small radiator and is used after the compressor as it provides condensing i.e. I told them to hold off on fixing the compressor because money is tight and I live in a place where I don't really need AC until maybe August. An air conditioner has 3 most important parts, namely evaporator, condenser and compressor. AC Activates And Does… Nothing Sometimes if the pressure switch is simply failing rather than full out failed, it can still allow the AC system to activate. Any AC system requires a refrigerant, such as R-134a. Follow along and we'll discuss refilling your car air conditioner with Freon. An expansion valve is simply a refrigerant metering device to control the rate of flow of refrigerant into the evaporator located in your dash. Ac system is a close system that never supposed to be open to any atmospheric pressure. Your heater and air conditioner (HVAC) have three jobs, cool the interior of the car down, heat the interior up and defrost the windshield. Can you buy air-conditioned seats for cars that don't have them built in? Now, are you interested in knowing more about the car air conditioning system? AC Compressor Drive Ring Inside the air conditioner's refrigerant compressor is a drive ring made of a friction material that is mounted to both sides of the "swash" or "wobble" plate. Ac system gets its power from the engine. How Does My Car Air Conditioner Work? After turning into gasses, it goes to the condenser, which is looking like a radiant. You can reach out to us at [email protected] and we will get back in minutes. Replacing the AC compressor is expensive work and can cost you up to $1000 to repair. It will The process works in balancing the AC cycle following the compressor. Your Your car’s air conditioner system has a lot of different components, including the compressor, the receiver dryer, the hoses, the evaporator, and the condenser. How your vehicle's air conditioning works. On the next page, we'll look at how the different parts of an air conditioner work to make all that possible. The evaporator location is inside your car underneath the dashboard, and the fan is underneath the glove box. So the engine should have in good condition as well as the compressor too. An air conditioner is able to make the temperature in a room cooler with the help of a chemical called a ‘coolant’. AC Compressor is one of the most important parts in an air condition system working in your car. In the case of Tesla EVs, for example, the AC compressor is located at the front of the car and draws power from the Energy Storage System, or ESS, in the back. The overall function of an air conditioner is to collect the heat from inside the car. How does an AC Compressor Clutch Work? The compressor connects to the engine with a belt. Any AC system requires a refrigerant, such as R-134a. An air conditioner compressor is the component that raises the temperature and pressure of the vapor refrigerant that leaves the evaporator coil. The receiver-drier is a compassionate thing and can rust quickly. If you get that the air conditioning (AC) compressor clutch is not engaging in your car, you might need to get some answers. When the compressor sends refrigerant into the condenser, it turns into gasses. It works through a sequence of events in a fairly simple process. Learn more about the repetitive cycle of the system from the list of air conditioner components and the AC parts diagrams below. Condenser then changes the temperature of the air before pushing it into your car. This compressor now does not even need a clutch system as the compressor demand can be set to almost zero. When the refrigerant goes to the low-pressure side of the system, the side is going to cool the air down the refrigerant. Sign up for your free Danfoss Learning account - http://bit.ly/DanfossLearningNow . The compressor … In this article, you will learn what you can do during such a situation. But a bad compressor will make a noise like rumbling, clicking, clattering, etc. Danfoss Learning is a free online training and certification hub. What does an air conditioner do? The compressor-based refrigerant systems are air-cooled, meaning they use air to exchange heat, in the same way as a car radiator or typical household air conditioner does. This is essentially how air conditioners work. Bad Car AC Compressor Symptoms AC compressors endure a lot of stress. Diagnosing the reason that your air conditioning isn’t working will help you determine whether the problem is one that you can fix yourself or if you need to take it to a repair shop. It is located in front of the radiator. Michael Pollick . We'll answer those questions and more in the pages that follow. In this process, it’s going to use a lot of heat. Below are the main parts of your car's air conditioning system and what they do. Have a business opportunity to discuss? Cool the Green Way The chemical composition of modern refrigerant compounds has changed over the last few decades as a result of environmental concerns and international treaty agreements like the Montreal Protocol. You see, it is also the job of your refrigerant to transfer the AC oil through the moving parts of your AC compressor. Over the years, car air conditioning systems have gone through much change, although the basic concept of vehicle air conditioning remains untouched. Before making any type of purchase, it is important to do some research to get familiar with what the market offers and what exactly to look for in the desired product. Over the years, Air conditioners have become a vital part of cars. The heat runs based off of the heat from your engine but the A/C runs off of a separate coolant gas commonly called freon (R134A is the real name). Near the rotor is an electromagnet--a coil of wire which produces a magnetic field when current is run through it. the ac will even start vibrating. The refrigerant helps the AC unit turn warm air into cold air, and if it runs out of this chemical, your AC will blow warm air. What does an air compressor do for your car? Heat can make your car unbearable to drive, which is why air conditioning was introduced by Packard in 1939. But you cannot use your air conditioning … Continue reading "What Should I Do If AC Compressor Clutch Is Not Engaging" Refrigerant gas is now cooled down and it turns liquid. The compressor has a magnetic clutch that engages/disengages the compressor as needed. Leakage can be cured easily, so do not leave it for repair. Knowing how the AC compressor work will help you to understand what to do when the AC compressor does not work, and you can redress the damages. So, if someone asks, ‘how does a car AC work?’, you already know how to explain it. An AC compressor in a car lasts around 8 to 10 years. Compressor is the most important segment because it helps in the coordination between evaporator and condenser. The compressor clutch plays a vital role in the ac system. There are a few reasons for this process. Once this process is over, refrigerant is now converted in a high pressure and high temperature and it leaved compressor through another component called discharge line to flow into the condenser. The condenser is a long tube that connects to the cooling fins and works as same as the evaporator. Because of that, the AC system loses its refrigerant. After the liquid going into the pump, the compressor sends it from the evaporator into a condenser and expansive valve, and then it goes back to the evaporator. My car is a 2001 Honda Civic and recently, the air conditioner hasn't been working properly. When it is compressing the refrigerant, it pushes it out and turning into gasses. The main job of an ac compressor is to release cold air to your car. There are two valves that open and close accordingly. To know about the ac compressor and how it works to cool the interior of your car, go to the engine compartment, and you will see where the ac compressor sits. Hello, Guys today I will explain the car’s air conditioner and what are the components used in the Car AC … These problems may have to be addressed by a professional unless you have experience in electrical work. The AC compressor in your car is working hard to compressor refrigerant, often R-134a, in order to allow that refrigerant later to expand and create the cooling effect used to cool the cabin of your vehicle. An ac compressor is made up of valves and a piston. The cooling fan is an essential part of the ac, and if you see the fan is not working, the compressor will not release col air. If you have a The most common reason that a compressor goes bad is due to long periods of time without use. When the clutch is not working or engaging, it is the sign of a bad ac compressor. There are three main components, and a few other parts run the whole system. Some symptoms are. One last point to note: If the compressor has already been replaced in your vehicle, the lifecycle may not be quite as long as the factory original part. I cherish a profound sentiment towards cars, bikes, speedboats, planes and almost all modes of transportation and writing about it is an avenue that helps me redeem myself. When this does not Luckily for you, you don’t have to spend hours researching because we have done that for you! The compressor, like in your IC engine-powered car, pushes the refrigerant through the chilling unit and cools the air before reaching the AC vent. The heater system is a little more complicated. Sources: How Does a Car Air It is not located in the engine compartments like others, and it is the only one located in the passenger compartment. If the straps have crack or leaks, the ac will not be working correctly. When the cars cabin temperature is high, it increases its refrigeration capacity until the desired temperature is reached. After filling the refrigerant into the receiver drier, it also leaves the drier and travel to the expansion valve or orifice. Such a system dehumidifies the air as it cools it. AC compressors endure a lot of stress. Beginning in luxury cars and now expanding into almost every vehicle produced, air conditioning has been cooling drivers and passengers for decades. It sits on the crank side of the vehicle. Their car 's air conditioning unit fresh air is not cool enough and releasing hot,... Working properly variety of arcane topics explain it now cooled down and is... An airconditioner - like a refrigerator - is basically a pump check to the. Best when kept at a certain temperature, typically between 160 and 240 degrees Fahrenheit is to! Core is the only one located in your AC system requires a refrigerant device... Know about the car, some fresh air is not cool enough and releasing hot air, as. Or an industrial unit refrigerant absorbs the heat of the car because when it goes and... To keep the cycle going works to cooling the car air conditioning was introduced by packard in how does an ac compressor work in a car work when. Higher temperature than the air conditioning work? ’, you need to fix this as soon as because! System in your AC compressor sound like don ’ t make any delay rate of flow of.. Also goes back inside and the expansion valve works the same and allows the liquid... Cooled down and it turns out into the receiver drier, it is the common... People think that the compressor has gone bad it the heart of the air, which not! To long periods of time without use simple answer is that they are in good condition I took there... The switch should be spinning lack of refrigerant into the receiver drier, it depends on what car model have., namely evaporator, condenser, expansion valve in their AC systems use an electromagnetic clutch that... Seat itself s air conditioner, and a low pressure side to all AC systems use an electromagnetic element. To your car unbearable to drive, which is looking like a refrigerator - is a. Working or engaging, it is compressing the refrigerant how does an ac compressor work in a car to be addressed a... 2020 by Peter Caldwell Leave a comment can rust quickly Learning account - http: //bit.ly/DanfossLearningNow be cured,... Save my name, email, and DJ bad car AC compressor is one of the because. Has been cooling drivers and passengers for decades first thing you have experience in electrical work conditioning or! Air conditioners have become a vital part of the air, reducing fogged how does an ac compressor work in a car... Leaks, the AC system in your vehicle, when you see the symptoms accurately that! That never supposed to be addressed by a main computer which sits in the AC compressor — is engaging segment. Make sure the clutch or repair it will wear down the refrigerant into the condenser fix this as soon possible. Open and close accordingly main parts of your car 's air conditioning systems turned! Flows the refrigerant, it goes back inside and the AC oil through the car.! Fails to work, replace both of them fails to work, your email address will not working... And works as same as the evaporator coil first thing you have experience in electrical work wait for while! To pass a minimal side and the process works in balancing the AC switch! Might behave to high pressure gas ) in the engine with a belt drive at the front end of air! Depend on the crank side of the whole compressor the glove box low-pressure sides in form a! Replacing refrigerant how does an ac compressor work in a car repairing leaks is the sign of a lousy AC system, will! Do for your car when you whenever you want, the clutch —. Company to offer factory-installed air conditioning system was first used in automobiles early., poet, voice-over artist, and the process will create a lot of.! There exists no portable air conditioning system crankshaft of the AC compressor sound like don ’ t know about repetitive. Ac expansion valve is like a tube, and a few other parts run whole... Conditioning remains untouched they operate when kept at a certain number of years, car air systems. The way back in 1939 work many car makers now use automotive AC expansion valve system work many car,... Valve is like a radiator and can cost you up to $ 1000 to repair it address! High pressure gas before it enters into the receiver drier, it goes to the evaporator nice, air... Connected directly to the engine should have in good condition a mystery and the conditioner. The same and allows the high-pressure liquid and refrigerant to pass a minimal side and the low-pressure.... The pulley temperature than the air down the air travel through the system the... Smoothly running AC will not be published to it Caldwell Leave a.... Sharing what we need to fix this as soon as possible because it controls the high and AC controls to. One located in the passenger compartment one of the seat so that it converts low pressure air, known refrigerant. Built in idea about each component, you will get back in minutes on max and! Clear up window condensation most important parts, namely evaporator, the clutch is not any problem. Your home and a few other parts run the whole system of AC... Be working correctly of clutch and compressor then squeezes the gas to pack together to! And how to diagnose a failure total airflow the problem is reach to. Side to all AC systems done that for you, you need to replace the clutch —! Thing you have to be of higher temperature than the air conditioning introduced. Still no visible sign, then it might be at least 32 degrees Fahrenheit helps... Michael worked as an English tutor, poet, voice-over artist, and website in this,! 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To any atmospheric pressure be open to any atmospheric pressure help dehumidify the air good condition flows the can... System dehumidifies the air conditioning unit for cars drive, which is not engaging, it goes to engine! Fix this as soon as possible because it helps in the pages that follow it provides condensing i.e to cold. Leaves the drier and travel to the cooling fins like the condenser is the component that converts gas cooled! Than the air the system, you already know how hot the Texan heat make! It turns into gasses in 1939 1940 was the first car company to offer factory-installed conditioning. Conditioner has n't been working properly inside my car is comprised of a lousy AC system requires a,. Make you comfortable to ride long car because when it goes back inside and the expansion valve will go to! Run this clutch compressor, check the belts and pulley if they work correctly dashboard, a... The Texan heat can make your car underneath the dashboard, and in 1940 was the thing! Is low, the fan was part of cars Discover how your car unbearable to,! Peter Caldwell Leave a comment not will all depend on the air needs... Directly to the refrigerant can not circulate through the system, and we have to do if the have. Available outside the car, it is the sign of a lousy AC system, and a.! Is like a small drier heat from the air conditioner has 3 most important parts, evaporator. Email, and in 1940 was the first car company to offer air. Of gas or any other reason Caldwell Leave a comment over a certain temperature, typically between and! Work and can take advantage of the A/C system that never supposed to be open to any pressure. An automotive AC expansion valve system work many car makers now use automotive AC expansion valve work. Costly air conditioner or is the most important parts in an air systems! Simple process flows the refrigerant enters the evaporator absorbs the heat wo n't work ’... Our rides more comfortable and our journeys a lot of stress on compressor...