If you’re running your AC in your car, does the radiator cooling fan add to the workload of the ac or does it not affect AC?
That’s what we want to reveal in this article.
Does Radiator Cooling Fan Affect AC?
The radiator fan works to cool down the engine. It provides extra airflow when the air conditioning is turned on.
So yes, it does affect the AC. But it doesn’t affect the temperature of the AC.
In the same way, your radiator needs airflow to cool the coolant, your condenser needs airflow to cool the freon that makes cold air.
That fan is where the airflow is coming from until you get up to speed. A broken fan may not seem like much, but it can cause overheating and of course, your ac not to working at lower speeds.
How Your Engine Cooling System and Air Conditioner Affect One Another
A number of things are related to both systems.
A working relationship between the two systems is essential.
Examples of this are the engine cooling fan and the air condition auxiliary fan.
Fans help circulate air throughout the interior of a home or vehicle and are necessary to move enough air through both the radiator and the air conditioning condenser.
If either fan is not working correctly, insufficient airflow is achieved.
This shouldn’t be confused with the airflow from your dash vents.
Your engine’s condenser resides immediately in front of the radiator.
If either the condenser or the radiator is operating at a higher-than-normal temperature, there is excessive heat transfer to the other component.
Another example would be the engine temperature sensor and the auxiliary fan speed resistor.
These two components control fan speed for both the water cooling and the air cooling systems.
When the fans aren’t switched on for a few minutes, the engine operating temperature and air conditioning output temperature may be too high.1.
It is important that this part of the truck works properly in heavy traffic conditions to maintain normal engine temperature and keep the truck’s air conditioner working properly.
Frequently Asked Questions
When Should the Cooling Fan Come On?
Your radiator fan should start up around 200 degrees Fahrenheit.
If you notice that your vehicle runs hotter than usual or is overheating, listen for the fan to see if you can hear it.
Is Radiator Fan And AC Fan the Same?
In a word, no. They’re very different.
The radiator fan is directly behind the front grill. It’s driven by an electric motor and its purpose is to blow air through the radiator to cool the coolant. The coolant is what’s circulating through your engine and keeping it cool.
The AC fan is under the hood, mounted on the AC condenser which is in front of the radiator. It’s driven indirectly from the engine via a belt or serpentine belt and its purpose is to blow air through the AC condenser to cool the hot AC refrigerant. The AC condenser is part of your car’s air conditioning system.
Does The Car Cooling System Affect The AC?
The coolant system is not in any way related to the AC itself. The AC system uses freon, which is a refrigerant. What the cooling system does is regulate the temperature of the engine.
For example, if your engine is overheating and you turn on your AC, it will help keep the engine cool because it is drawing heat from the air blowing through the vents.
So in a sense, yes, it does affect the AC in that regard but it doesn’t have any bearing on whether or not your AC works or blows cold.
If your car is low on coolant, then you should have that topped off. Low coolant can cause problems with your engine and cause it to overheat if left unattended.
Can Radiator Cause AC Problems?
The radiator fan is responsible for pulling cool air through the radiator to lower the temperature of the coolant. This helps prevent your engine from overheating. There are some common symptoms that you have a bad radiator fan that can help you determine if your fan has failed so you can get it repaired.
Loss of Cool Air. The first sign that something is wrong with your radiator fan will be the loss of cool air entering into your car’s cabin while driving. Your car’s AC system works by pulling hot air out of the cabin by way of the vents and pushing cooler air in.
The radiator fan is what helps bring in this cool air. If you notice that all of a sudden, no matter how much you’ve adjusted your temperature, you’re not getting enough cool air, it’s a good sign that your radiator is not working properly. This can also result in warmer temperatures under the hood as well so pay attention to this when driving around.
Overheating Engine. When your car’s engine starts to overheat, one of the first things to check for is whether or not your radiator fan is spinning fast enough to pull in the necessary amount of cool air over the radiator fins. If there’s an issue with your fan, this will cause a decrease in airflow.
Does Radiator Flush Help AC?
The A/C system and the cooling system are not connected to each other. Your A/C system uses a type of refrigerant (commonly called Freon) to cool the interior of your vehicle. Having a coolant flush performed will not help your A/C stay cool, or visa versa.
The best way to ensure that both systems function properly is to have regular maintenance performed on them. For example, if your car’s air conditioning doesn’t seem as cold as it used to be, take it into an Auto Care store for an A/C Performance Check. This free evaluation can tell you if there is a problem with your compressor, refrigerant levels, or any other part of the system that may need attention.
For your cooling system, it’s recommended that you have a radiator flush performed every 24 months or 30,000 miles. You should also have a cooling system performance check done at least once a year to make sure all of the components are functioning properly.
Why Is My Car Air Conditioner Blowing Hot Air?
If your car’s air conditioner suddenly starts blowing hot air, you need to find the source of the problem. There are several possible causes, and some are more serious than others. Here are some common culprits:
A refrigerant leak. Refrigerant is a liquid that circulates through your car’s A/C system, expanding and contracting as it removes heat and humidity from the cabin. None of the other A/C components will function correctly without proper refrigerant levels.
Leaks can occur due to damage or wear to hoses or other parts of the system, and may sometimes be hard to pinpoint. You’ll probably need a technician with a refrigerant leak detector to identify the issue.
A stuck compressor clutch. The compressor is an essential component of your car’s air-conditioning system — it pumps refrigerant through the system and compresses it into liquid form so it can absorb heat out of the passenger cabin.
But if the clutch engages when it shouldn’t, there’s no way for refrigerant to flow through the system — and that means no cold air for you. If this happens, you’ll want to head straight to a professional mechanic who will be able to replace or repair your A/C compressor before you’re left sweating through another summer.
Why Is My AC Not Cold After Recharge?
If your car’s A/C is not blowing cold air after recharge, check the following:
Compressor. If your car A/C stopped blowing cold air all of a sudden, it’s likely your compressor needs to be replaced. The compressor is the engine that drives the entire A/C system. If the compressor is not working or is lacking in oil, it has a tendency to break down and cause the entire system to fail.
Condenser Fan. This circulates air through the condenser, cooling the refrigerant. If this fan isn’t working properly or has come loose from its mounting on top of the radiator, it will blow hot air into your car rather than cool it as intended.
Evaporator Core. The evaporator core is installed in front of a vehicle’s heater and radiator core and sits behind the dashboard inside a car’s interior and looks like a small radiator, with hundreds of very small tubes running through it.
When warm air blows across the evaporator core, it draws out all the heat and moisture from ambient cabin air, cooling it down and drying it out before it gets blown through the vents. This can become clogged with dust over time and cause poor airflow through your car’s vents.
The frequency of your AC recharge will depend on the amount of use your vehicle gets and the weather you generally drive in. Once every year or two is probably sufficient. Spring is a good time to do this. We advise you to schedule an AC recharge before your unit stops blowing cold air entirely. If you notice that the air coming out of your vents is not quite as brisk, give a professional a call.
Unfortunately, we can’t tell you how much freon your car requires, but it can be determined through an inspection of your vehicle’s air conditioning system. Your owner’s manual may have this information too.
The mechanics will start with a visual inspection of the lines and hoses in the AC system. They will look for any signs of damage or leaks and fix those before adding refrigerant to the system. They’ll also check the compressor and other parts of the system to ensure that they’re working properly.
Can AutoZone Charge My AC?
AutoZone sells products that you can use to charge your AC by yourself. However, the employees will recommend a mechanic or local store from their list of preferred shops if you need any assistance. AutoZone employees will direct you to a local shop to charge your AC to avoid spending extra time on it.
You can buy an AC charger from AutoZone and follow the instructions to self-charge your car system. Most of these products are easy to use and work well for those who want to do it themselves.
The average cost of charging your AC at AutoZone is about $80 plus tax, which includes up to 2 pounds of freon and the service fee. This price is usually only if you have an older model car with a simple air conditioning system that doesn’t have an R134a refrigerant.
As a recap of the response we gave to the question, Does Radiator Cooling Fan Affect AC?
The radiator fan works to cool down the engine. It provides extra airflow when the air conditioning is turned on. So yes, it does affect the AC. But it doesn’t affect the temperature of the AC.
Thanks for reading.
Joe lives and breathes cars and trucks. After many years working in the Auto industry, he decided that it is only right to share his knowledge with the public. As a qualified expert in trucks and cars, he started working for Truckile.com and is the main editor and publisher.