One of the most common questions we get is why is my car air conditioner not blowing cold air?
There are many reasons this could be happening and we will outline them here.
If you’re experiencing a problem with your AC, it’s important to find out what’s going on before you make any repairs so that you don’t end up spending money unnecessarily.
Table of Contents
Why Is My AC Running But Not Cooling In My Car?
Here we outline 6 potential causes for your car’s air conditioner not working.
1. Check the fuses and make sure they are not blown
One of the first things you should do is check your car’s fuse panel to see if any fuses are blown.
If a fuse has been incorrectly wired, it may cause an air conditioner problem and result in no cold air coming out.
If this is not the issue, inspect both ends of the wires at their connections for loose screws or corrosion that could be causing a short circuit.
Replace damaged wiring as needed.
Check all hoses and make sure they’re intact with no cracks or leaks where refrigerant can escape from inside them; replace leaking lines as necessary.
Inspect your condenser unit (a metal box usually mounted on top of brackets) for fluid leakage which can mean a leaky seal between the evaporator coil.
2. Check Your Dashboard Vents
Clean out any debris or dirt from around the vents in your car’s dashboard which could be blocking the air from coming through
Make sure that your condenser unit is not blocked by leaves or other debris, and has a good seal around all of its connections to ensure there are no leaks.
3. Check The Cabin Air Filter
Check the cabin air filter to see if it needs replacing.
If it does, change the filter and then test your air conditioning system again to see if there’s any improvement.
4. Make sure that you have enough gas in your tank
If your car doesn’t have enough fuel , this could be the reason why your air conditioning is not blowing cold.
Add gas if you need to and make sure that there’s a good seal around all of your fuel lines, including any metal connections for rubber hoses.
5. Faulty Wiring
Faulty wiring in car A/C system or refrigerant leak can cause no cold air coming out.
Check both ends of wires at connection points for loose screws or corrosion causing short circuits; replace damaged wiring as needed.
6. Check your engine coolant level
Check your engine coolant level; you may need to add more if it’s low.
Your car should have a “low” warning light on the dashboard when this happens, but double-check with an ice cube test (place one in a glass container full of water).
If you drive for long enough without refilling your radiator, eventually the antifreeze will boil away completely and can lead to serious damage.
A boiling point between 250-275 degrees Fahrenheit is what we’re aiming for here!
How Often Should You Service Your AC
You should have your vehicle AC serviced every 1-2 years.
If you have your AC serviced regularly, this may be why it’s not blowing cold air.
If an automotive technician or mechanic has been working on the engine and they don’t wear a mask to protect themselves, then there is also a possibility of dirt entering the system which could cause problems with how well the A/C works.
If you’re experiencing a problem with your AC, it’s important to find out what’s going on before you make any repairs so that you don’t end up spending money unnecessarily.
The first thing many people do when their air conditioning system stops blowing cold is checked the cabin filter for dirt and debris which could have been blocking the airflow from reaching the passenger compartment.
If it does need replacing, then change it again and test your car’s AC again to see if there has been an improvement in performance.
Summary
Why is my car air conditioner not blowing cold air?
The 6 reasons outlined should help you diagnose why your car’s air conditioning is not blowing cold air.
If you have tried all of these potential solutions and they are not working; you should consider bringing your vehicle into a local mechanic or dealership to get looked at.
A professional should be able to quickly identify the issue and may also be able to fix it onsite.
You should try and get your AC serviced every 1-2 years to make sure it runs efficiently.
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