Why is my car air conditioner not blowing cold air? There can be a number of reasons why you can air conditioning is not blowing cold air. The most common reasons could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge (regas) your air conditioning.
An AC leak will lead to warmer air from your vents over time. In most cases this can be fixed with a proven stop leak additive to seal up any leaks. When it's time for an AC recharge, turn to AutoZone.
Power issues: A tripped circuit breaker or blown fuse in your home's electrical system will prevent your AC from starting. Thermostat problems: Make sure you have your thermostat set to “cool” and the temperature is set below the current temperature in the room.
Check Your Circuit Breaker
Locate your main circuit breaker and switch it back to the "On" position. Wait 30 seconds and turn on your air conditioner again. If it still doesn't work, you'll need to call a professional for help.
Blowing the fuse cuts the power to the unit to prevent electrical damage. If your AC has shut down and won't start again, especially if you've noticed odd electrical behavior immediately before the shutdown, chances are the fuse has done its job and will need to be replaced.
One of the most obvious signs that your vehicle needs a Freon recharge is that your vehicle will be blowing warm air, even after your vehicle has been running for some time. If your refrigerant gets too low, there will simply not be enough “coolant” to cool the air as it is passed through your evaporator coil.
What is the average cost of a car AC recharge? The average cost of a car AC recharge can range from $100 to $300, depending on the vehicle and location.
Low pressure in the system can occur when there is not enough refrigerant in the lines. This results in an inefficient cooling process, which can cause warm air to blow instead of cold. Refrigerant leaks could be caused by something as simple as a loose connection or a more serious issue like condenser failure.
If you've noticed that your car's AC system isn't as cool as it once was, start by troubleshooting issues you can take care of at home. Replace the air filters, clean the ducts and recharge the system. After that, if you're still having problems with the AC, bring your car to a mechanic.
Oil contamination can affect the performance of AC components like the compressor or expansion valve. This is why it's crucial to address any oil leaks promptly to prevent them from spreading to other parts of your car, including the AC system.
The thermostat is responsible for regulating the temperature of the AC system. If the thermostat is not working properly, it won't be able to regulate the temperature properly, which will cause warm air to be blown into your car.
So what caused your air conditioner to stop working? Most likely, your AC system lost its charge of refrigerant. Or, due to an electrical fault, its compressor is not engaging when you turn on the system. Another possibility is that an internal obstruction is blocking the circulation of refrigerant.
Warm Air from the Vents
If the compressor is fine, it will push cold air into the cabin of your vehicle. If you begin to notice warm or even hot air coming out of the vents, this is a clear indication that the compressor is not functioning properly.
Yes, you can, but you shouldn't. The recharge process is oversimplified by bloggers and YouTubers. You need technical knowledge and tools that only a local auto repair shop has for a successful recharge. Plus, there are some risks in DIY AC system recharging.
Freon is contained within your vehicle's AC system, as in completely confined within, so Freon's loss isn't through consumption but through leaks that eventually develop within hoses and connections.
The good news is that recharging your air conditioning system is a relatively simple process — but it's essential to do this regularly. It's recommended that you recharge the air conditioning in your car every two years, to keep the cooling power at its highest. This keeps the refrigerant loss to around 14%.
Various electrical problems, such as a faulty relay, blown fuse, bad sensors, loose connections, or damaged wiring, can disrupt the functioning of the car air conditioner. Solution: Check the electrical components associated with the AC system and replace any damaged parts.
Check the thermostat
You should check if it's been set to the correct temperature and also make sure it's set to “cool”. If the AC settings are not right, it won't turn on. You can also check if the batteries in the thermostat are fresh and replace them if needed.
For AC capacitor replacement, anticipate spending between $150 and $400, depending on the capacitor's type and accessibility. A bad AC capacitor is a fairly minor repair, and most HVAC technicians will recommend a repair rather than replacing the unit when the capacitor is the problem.