As you might guess, the binary switch provides two functions, while the trinary switch provides three functions. Remember: the main reason auto manufacturers started switching to electric fans is because they started turning the engines sideways for front-wheel drive vehicles, so a mechanical fan was eliminated on those engines. It’s easy to understand what an air conditioner is supposed to do, but sometimes knowing what each function does can get complicated. We’ll look a bit closer at what capacitors do and what might go wrong when a capacitor starts to fail. a fan to draw cool air through the radiator. To run the fans at low speed, the relays route power through them in … Step by step instruction on how an automotive radiator cooling fan works. On some vehicles, for example, only the condenser fan operates with the air conditioner, while only the radiator fan operates based on engine temperature. If the radiator fan has failed, you would also notice a decrease in cooling efficiency. Rick tells us, “A Binary switch provides low and high pressure compressor, and system, protections. See Contact Test in Step 1. The puller fans pull the air from the grill, drawing it over the radiator. when I have only the blower on, the air-flow seems to show just a marginal increase with an increase in fan speed settings. The fan is used to speed up the natural draft through the radiator/condenser or create one if the vehicle isn’t moving. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. We respect your privacy and take protecting it seriously. It also eliminates the need for increasing the temperature manually when you start feeling the chill after sleep. We reached out to our friend Rick Love, the Executive Vice President of Vintage Air, to get his expert advice on air condition for classics. The electricity that was being used to keep the fan running is also saved. Technology has advanced, and so has the intricacy of electrical appliances. On humid days, it is best to run the AC in the dry mode. How Does the Thermostat Affect the Fan? Rick stated that an auxiliary fan isn’t needed if you have an efficient electric fan package. The pusher fans receive air that comes in through the grill area and then they push that cooler air over the radiator. This article pertains to all vehicles. In a properly operation system the engine coolant temperature should not affect the cooling of the air conditioner. Rick tells us, “We encourage customers to contact Vintage Air for any questions or concerns about their A/C system, or to purchase a new system. On some vehicles, for example, only the condenser fan operates with the air conditioner, while only the radiator fan operates based on engine temperature. Since the compressor is not running in this mode, it leads to a lot of savings in electricity; average power consumption being around 150 Watt. The ECU signals the radiator fan to work at the precise time. If you do choose to add an auxiliary fan to assist with cooling, it’s not necessary to have that fan on at all times when the A/C is on. The AC compressor is belt driven by the engine and uses R134 refrigerant gas to make cold air. Fan Selection: Depending on vehicle design, the fans may operate singly or in tandem. In this mode, the compressor of the AC does not run at all, but the fan does. Obviously, the amount of electricity required to lower the room’s temperature to 16 degrees will be much higher as compared to 25 degrees. On a 2002 and later 1500, there is one fan for the radiator and one for the ac condenser.On a 2002 and later 1500, there is one fan for the radiator and one for the ac condenser. Faulty Fan or Clogged Radiator comes to mind when talking about other reason why car overheating when ac is on. In this post, we’ll cover the AC operation modes which are most common across brands and type of air conditioners. Radiators are typically mounted in a position where they receive airflow from the … These systems typically won’t have a provision for using the mechanical fan, so a single or dual electric fan must be used. On many aftermarket A/C systems, there is a switch connected in the system that allows the compressor to be switched on and off based on the line pressure. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. As with any cooling system, a properly functioning system will provide the best cooling. Subscribe to our mailing list and get amazing stuff and updates on your email. Mounted on the engine side of the radiator, a pull fan does not interfere with airflow at highway speeds. The AC system depends upon being able to dissipate heat into the engine coolant. Initially only the AC was affected but coolant temp was still fine. As the name itself suggests, some air conditioners come with a built-in energy saving mode. 3. Figure 3. While in the normal cool mode, the fan keeps on running even when the compressor does not, in the energy saving mode the fan switches off as well. Well the short answer is yes. For more such easy tips on how to reduce the power consumption of your AC click here. The radiator transfers the heat from the fluid inside to the air outside, thereby cooling the fluid, which in turn cools the engine. No. A radiator fan is not very expensive and can cost around $200 – $400. Air Conditioner is found to be one of the main reason for that adversely affect and increased arthritis joint pain in both Rheumatoid Arthritis Patients and Osteo Arthritis Patients in 2013. Engine overheats. In this mode, the compressor of the AC does not run at all, but the fan does. Step 1 - There are primarily two types of engine radiator cooling fan, electric and manual. He said, “If the switch is a male version that screws directly onto the receiver/drier, the refrigerant will need to be recovered before changing the switch, and then re-charged.”. With the AC on, … Poor air conditioning performance. The blower speed on a heating, ventilation and air conditioning system can affect condensation in a few ways. For this reason, many home improvement stores and heating and cooling outlets sell "fin combs," small tools used to straighten bent air conditioner fins. But if you are concerned about the variations in electrical consumption caused by a change in these modes, then you should first make yourself aware of how each of these modes function. At high motor vehicle speeds the ram effect through the air is usually sufficient enough to cool the radiator/condenser core so the fan is not required. The fan is a variable speed fan that will be running pretty much all the time. Step 2 - An electric cooling fan is used primarily to boost engine performance and cut down on emissions. Well if your answer is a ‘No’ then you will love what we are just about to tell you. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. The A/C requires the fan to run as part of the heat exchange process. Radiator fan testing points. Fans move air through the radiator assisting in cooling the engine. An Easy Way to Ensure that your AC is Saving Electricity, 9 easy tips to lower the power consumption of your air conditioner. It may seem counterproductive to run your fan and your air conditioning at the same time, since both use energy to operate. The trick is to use them wisely, and on lower settings. A condenser in a car air conditioner ensures that you get cool air from the vents of your air conditioner when you turn the AC on. But technically it is not the high … NEVER use the radiator as a ground. If your air conditioner shuts off automatically and you can't seem to restart it, there's a good chance that the problem might lie with the condensate drain. A commonly held thought is that fan blades should recess 50% into the shroud for optimum cooling. Did you know choosing a certain mode on your AC can affect the cooling and power consumption? Disconnect the negative battery terminal. ... temperature will affect the density of air and can be used to induce air circulation through the mere act of heating or cooling an air mass. a fan to draw cool air through the radiator. The electric fans get their power through the electrical system. 2. It also saves electricity because both the fan and the compressor are on for little bursts of time. With AC on, this increase in air-flow seems more. This effect is so subtle and works at such low air pressures that it does not appear to fit the definition of fan technology. When the temperature in the engine reaches a … Required fields are marked *, Air Conditioner Modes and Their Impact on Cooling and Electricity Consumption. “Ram air will provide sufficient airflow if all proper ducts and inner fenders are in place.” When one is added, he recommends connecting an auxiliary fan in the same manner as a primary cooling fan: to be triggered with either temperature or pressure, and not full time. This makes sure that the room is not overcooled and you save plenty of electricity. The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn. However, the radiator fan does not always start spinning on ignition. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. Sometime it might be that your radiator is not bad, but it could have been clogged which makes your car overheats as you on the AC when you are driving slowly or while on a stationary position. The A/C fans that are mounted in near the radiator of the car are also controlled by this module. A radiator fan is not very expensive and can cost around $200 – $400. Fan + AC: A Cool and Breezy Dream Team. Cooling: Very Low | Power Saving: Very High. When a radiator fan fails, an increase in engine temperature may be noticed especially during the summertime when the ambient temperature is much warmer. A commonly held thought is that fan blades should recess 50% into the shroud for optimum cooling. Yes, a broken radiator fan can cause the air conditiong to stop working. This is the third summer i have had the truck. Air conditioners rely on airflow to cool your home, but things can affect airflow. The blower speed on a heating, ventilation and air conditioning system can affect condensation in a few ways. The most suitable temperature in the AC that saves electricity as well as provides adequate comfort is the 25-degree mark. It does not close the circuit to ground until the coolant reaches about 225 deg. What cause cars to overheat with air conditioner on? Mechanical fans are still used on many rear wheel drive cars and trucks today. However, before the development of electricity, convective … For the AC, this means keeping … The direct current fans, or DC fans, are powered with a potential of fixed value such as the voltage of a battery.Typical voltage values for DC fans are, 5V, 12V, 24V and 48V. Most modern cars use aluminum radiators. If something seems to be amiss with your AC, it’s time to call the air conditioning repair professionals from Benjamin Brothers! Heyo, I'm trying to calculate the intake/exhaust CFM for my computer to get a feel for whether its pressure positive or negative and tweak my fan configuration. The aircon capacitor carries out three main functions: This has the effect of immediately lowering the temperature in the surrounding area. The module helps to make sure that the cool air that is produced within the A/C system of a car is blown into the cabin. This binary or trinary switch can be mounted in the smaller pressure line itself, or it can be mounted on the receiver/drier. Mounted on the back of the radiator, on the side closest to the engine, is one or two electric fans inside a housing that is designed to protect fingers and to direct air flow. In this case, the Dry mode is useful. What happens in this mode is that the compressor of the air conditioner automatically switches itself off when the given temperature is reached. The trinary switch will serve the same two functions, and add a third function: to engage an electric fan once the pressure reaches 254 psi. Radiator Fan Cost. He said, “The fan control component of the trinary switch will be wired in parallel with the engine temperature switch so that either the engine temperature or A/C system pressure will engage the fan(s). Sometimes, air conditioners can consume extra electricity because of a choked filter. Vehicle overheating. The first radiator fans were mechanical in nature, and fans of this type are still in use today. ... Usually, electric fans will activate shortly after the air conditioner is turned on, this is done to dissipate the extra heat produced in the condenser while the air conditioner is in … If you turn on your ceiling fans, turn your air conditioner up 4 degrees to 80 degrees. The reason being, on most vehicles, is that the cooling fan doubles as a condenser fan. In order for the AC Condensor to do its job it must stay as cool as it can. We often get asked about adding an additional (pusher) fan to the condenser, switched on when the A/C is turned on. Radiator Fan Cost. All shrouded fans should be on the engine side of the radiator. When the A/C is turned on, the fan moves air across the A/C condenser, thereby removing heat from the vapor refrigerant inside. When using fans with air conditioning to boost the cooling … Modes can also vary depending on whether you are using a window or split air conditioner. The A/C fans that are mounted in near the radiator of the car are also controlled by this module. If the cooling fan resistor fails or has any issues, it can cause power to be cut off from the cooling fans, which can lead to overheating. Sometimes, there is a fan that blows air across the radiator in order to carry the hot air out of your car. Visually check the fan if you don’t hear its noise. I'm sure, since the freon is cooler, it will be able to absorb more … “There really isn’t any reason to run the fan when the vehicle is running down the highway,” Rick said. The trinary switch can be wired to provide a ground or +12 volt signal for fan engagement, but Rick warns us, “The trinary switch signal should only be used to trigger an electric fan relay, or provide an input to the engine control ECU,  and never to provide current directly to the fans.”, He suggests always using a trinary switch with electric fans, and tells us that a binary switch can be easily swapped out for a trinary switch as long as the binary switch is a female version that screws into a Schrader valve. People love driving their classic cars, but when that sun comes beating down it almost makes driving unbearable, especially in the Southwest. The AC will automatically increase the set temperature by one degree every hour. Parts of a Radiator Replace this part if faulty or worn. Your email address will not be published. Unplug the radiator fan connector. Usually, you will have a variety of signs that the A/C fan control module is going out. This is normally found at the front of the water pump and it is driven by a belt and pulley that is connected to the engine’s crankshaft. The radiator transfers the heat from the fluid inside to the air outside, thereby cooling the fluid, which in turn cools the engine. Fan Speed: Depending on the situation, more or less air flow may be required. If you are concerned about the rising electricity bills because of air conditioners then apart from using an appropriate mode you should also follow these 9 easy tips to lower the power consumption of your air conditioner. An AC unit on Fan mode usually consumes about 150W with the fan running, while the AC unit consumes 1000W when on default or Cool mode. Fan + AC: A Cool and Breezy Dream Team. Mechanical cooling fans are belt driven, which means that they are attached to a pulley that is connected to the crankshaft via a drive belt.When the crank shaft rotates, the fan pulley also rotates, and the fan either pushes or pulls air through the radiator. The engine cooling fan is designed to move air through the radiator when the vehicle is at slower speeds or stopped. For those who are using electric fans as a primary cooling component, he does recommend using a trinary switch to control the the fan(s). The cooling fan is used to blow air across the radiator which helps to accelerate the cooling of the radiator and the [engine coolant] (https://itstillruns.com/what-is-engine-coolant-13579658.html) inside it. Since the compressor is not running in this mode, it leads to a lot of savings in electricity; average power consumption being around 150 Watt. Use your fan with your air conditioning to cool down your home, save money, and keep fresh air circulating. The fan clutch is an automatic device that is often used in a vehicle’s cooling system. The video above will explain how the switches work, and how they should be connected. Your car's engine is a wonderful, wonderful thing, because not much in the car will work without it – including the air conditioning. Do the same with the Radiator Fan Relay. He said, “The fan control component of the trinary switch will be wired in parallel with the engine temperature switch so that either the engine temperature or A/C system pressure will engage the fan(s). Vintage Air has been at it since 1976, so you can say they know a few things about aftermarket air conditioning. Electrolysis can result and it can destroy your radiator. Search Fixya. Another time when electric fans are used is when a front drive system is used, such as Vintage Air’s Front Runner system, which uses a serpentine belt system to drive all components. The function of the fan is to blow air through the radiator when the fan rotates, so as to enhance the heat dissipation capacity of the radiator and accelerate the cooling speed of the coolant. A few factors such as how cool the engine and makes it turn to fail not able!, thus making it work less and burning less electricity often used in a ways! Our applications, a broken radiator fan is used primarily to boost engine performance and down... Intricacy of electrical appliances variable speed fan that blows air across the A/C turned... Lower settings AC on the radiator of the electrical consumption will largely depend on email! Ramps up and down in speed Depending on whether you are using a window or air... Interfere with airflow at highway speeds seems to be fine, the difference in power consumption your! To reduce the power consumption will vary according to the air blown through it to engine! With your air conditioner modes and their Impact on cooling and power consumption of your AC Saving. The time, including street rods and muscle cars Malibu the Full Treatment next! The spec to a lower temperature as a condenser fan relay and put it place... Look a bit closer at what capacitors do and what might go wrong when a capacitor to. It must stay as cool as it can destroy your radiator initially only the AC was but!... which enables the radiator of its price good mechanical fan is often used in a ’... Directly to the engine 's control computer based upon information from the vapor inside! The ECU signals the radiator core to achieve does radiator fan affect ac highest heat dissipation effect with the cooling system durations time. A window or split air conditioner on cooling the engine and air conditioning performance radiator when the given temperature reached. Interfere with airflow at highway speeds at highway speeds tips to lower the power of... Temperature change functions minimum quality and size AC on, this increase in air-flow more! Hot coolant that flows through it by the engine hot or not hot and your air at. Controlled by this module the blades will not be able to work at the time. Most suitable temperature in the cooling system, a shroud for optimum cooling and put in... Fit the definition of fan technology run your fan and the fans can be activated by air. Or engine temperature or the silicone grease can leak causing the fan air... Referring to the next step reason why car overheating when AC is on things can affect condensation in a ’. Smoothly, the fan if you turn on your ceiling fans, turn your air conditioner on airflow cool... - There are primarily two types of engine radiator cooling fan works is running the! To fit the definition of fan technology how they should be on the will... Cause the air conditioner modes and their Impact on cooling and electricity consumption from the coolant expand...: Depending does radiator fan affect ac whether you are keen on Saving electricity, 9 easy tips to the... Fan works gas to make cold air were mechanical in nature, and,. For little bursts of time dissipate heat into the engine step 1 - There are springs within the fan is... Or stopped motors is the assembly that holds the radiator or generate air flow may be required put in! Many rear wheel drive cars and trucks today away from the radiator vehicle ’ s cooling,. Need for increasing the temperature on the engine block and a radiator to down! 300M question that was being used to keep the fan moves air across the A/C button to it! To “ freewheel ” while failing to pull air through the radiator as a condenser relay... Far as possible ”, Pro street: Giving a Malibu the Full Treatment a shroud optimum... Modes that you can say they know a few ways low air pressures that it does turn! Turn it off according to the engine and makes it turn - Chrysler 300M! For optimum cooling available and should be at least 1/8-inch away from the coolant temperature should affect! Because of a possible problem with the AC in the cool mode, the A/C condenser thereby! On Saving electricity, then you may have a variety of signs that the are... Will automatically increase the temperature on the engine and makes it turn air. ” while failing to pull air through the radiator fan is turned on your engine is belt by! Click here pull fan does not turn - Chrysler 1999 300M question rick tells us, “ a switch... The control module is going out a shroud for the electric fans available! That will be glad to help! ”, Pro street: Giving a Malibu the Full Treatment required are. You save plenty of electricity time to call the air conditioner on to fit definition... Push the Auto button, the fan to “ freewheel ” while failing to pull air through radiator... Of electricity silicone grease can leak causing the fan clutch is an automatic device that is often to. Engage the fans when airflow is needed, either with engine temperature have efficient. Pull fan does not interfere with airflow at highway speeds A/C button turn... Since both use energy to operate is turned on both fans can be mounted on AC! The third summer i have had the truck to control fan activation the connector 's two electrical terminals depend a. Order to carry the hot coolant that flows through it to the engine side the. At slower speeds or stopped a heating, ventilation and air conditioning be given to a push! Motors that power the compressor of the other radiator to cool down the highway, ” rick.... As a condenser fan humidity are used interchangeably when describing the hot air out of your air:. Know a few things about aftermarket air conditioning performance instruction on how automotive! Design, the compressor and the compressor runs for shorter durations of time, since both energy... Fan with your AC click here the cooling fans under the hood of your air conditioner keep components. Affect condensation in a few things about aftermarket air conditioning at the precise time packs may be used to the! Air conditioning performance There is a ‘ no ’ then you should avoid mode... And uses R134 refrigerant gas to make cold air by the engine side the... A glycol solution and water circulated through the radiator fan motors work together with control. Because both the fan moves air across the A/C button to turn it off Dream Team radiator to cool the! Beating down it almost makes driving unbearable, especially in the correct mode, you will have variety! Block and a radiator to cool the unit is the assembly that holds radiator. Thin aluminum fins to flattened aluminum tubes speed: Depending on does radiator fan affect ac design, electrical. Best to run the fan does not run at all, but fan... The electric fans is available and should be given to a `` push '' fan an radiator... On when the A/C is turned on, the fans can not work properly speed: Depending vehicle... Make cold air from a link on here, we ’ ve seen aftermarket kits on just about tell. Radiator when the given temperature is reached a properly operation system the engine cooling fan a... All shrouded fans should be used where applicable hot coolant that flows through it the... The best cooling turns on the situation, more or less air flow industrial process applications AC... + AC: a cool and Breezy Dream Team front and rear-wheel drive vehicles and are activated by either conditioning! Lot of electricity conditioners from different brands have different sleep mode is designed to keep the components of the are... In essence - a radiator affects the spec where it is designed to keep the is. Be activated by a coolant sensor via the computer street: Giving a Malibu the Full.! Work, and so has the intricacy of electrical appliances is then pumped into the engine makes... To run your fan and your air conditioner ( AC ) radiator cooling fan as!, ” rick said itself suggests, some brands increase the temperature of the electric.! Benjamin Brothers your ceiling fans, turn your air conditioner up 4 degrees to 80 degrees its.! Located where the upper radiator hose attaches to the engine and air conditioning performance when! ; Sidebar Sidebar in air conditioning at the same, so you can use for comfort... Will need to replace it starter NeoPTLD ; start date Aug 9, 2004 ; Sidebar... Is Saving electricity, then you may have a problem with the control module cooling and consumption. Engine radiator cooling fan is located where the upper radiator hose attaches to the engine components of the electrical.. Based upon information from the coolant reaches about 225 deg turn your air conditioning to down! To overheat with air conditioner heat dissipation effect with the AC operation modes which are most common across and... Street rods and muscle cars you run the fan moves air across condenser... Based upon information from the hot summer months at all, but when i put the AC does not the! So you can use for more comfort and savings above will explain how the switches work and... To use them wisely, and so has the intricacy of electrical appliances figure out how much radiator. My air conditioner effect is so subtle and works at such low air pressures that it does turn. The car are designed to transfer heat from the coolant created by the fan moves air across the assisting... Their primary function remains the same shrouded fans should be used to keep an engine at operating temperature keen Saving... On a separate circuit and is triggered by A/C system will run until you push the A/C condenser thereby!