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.
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.
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%.
While O'Reilly Auto Parts cannot recharge your vehicle's air conditioning system for you, we carry the parts, tools, and helpful resources to help you get the job done right.
If your AC is cold but not cold:
Check to see that the cooling fans on the condenser or radiator are running when the air conditioning is on. Look for any restrictions like leaves, bugs, or dirt that could be preventing air from passing over the condenser. Check the cabin air filter to make sure it's not clogged.
Find the Low Side Port
The refrigerant gets inserted into the low-pressure side of the system, not the high-pressure side. Both the low side and the high side ports are attached to the compressor, which is found under the hood of your car. The low side port is the larger tube.
Before releasing the refrigerant into the port, turn on the vehicle and turn the AC on to its max temperature.
Most cars hold between 28 and 32 ounces of refrigerant (or about 2—3 12oz cans), however larger vehicles and those with rear A/C will likely hold more. Check your vehicle manual for the system capacity for your specific vehicle.
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.
Common Causes of an Air Conditioner Blowing Warm or Hot Air
These can be due to clogging issues, electrical problems, low refrigerant, evaporator coil malfunctions, or compressor problems. If you've ever had the ac system in your car stop functioning, it's often due to a refrigerant leak or dirty coil.
If the loss of refrigerant is a chronic, ongoing issue, have your car's AC system serviced by a professional technician at a dealership or repair shop. Keeping your vehicle in solid working order helps retain its value. By maintaining your vehicle, it helps if you ever need to sell or trade it in for a new one.
The average cost of a car AC recharge can range from $100 to $300, depending on the vehicle and location. How often should a car's AC system be recharged? A car's AC system should only be recharged if it is leaking or experiencing a loss of refrigerant.
One of the most obvious symptoms of low Freon levels is if your air conditioner is blowing warm or room temperature air. As we discussed, the air conditioning system in your vehicle operates by circulating this pressurized refrigerant. When the amount drops too low, it eventually affects performance.
So, here's the deal: yes, your car's air-conditioning can, “run out,” of Freon™, but it may not be in the way you think. 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 average costs for common A/C car repair services are: A/C Repair – $384 to $445. A/C Compressor Replacement – $1,546 to $1,705. A/C Recharge – $239 to $281.
Likewise, there are some A/C repairs that the average person should leave to the pros. However, in many cases you—yes, even you—can figure out what's wrong with your car's air conditioner and fix the problem yourself, all for less than the diagnosis alone would cost at most auto repair shops.
During an AC diagnostic, we will inspect the belts for cracks, the compressor for leaks, the electrical components for connectivity, and the entire system for low pressure. Our service staff may also evacuate and recharge your system with refrigerant according to your manufacturer's specifications.
Please remember that using the wrong type of refrigerant for your system can create a hazard or cause serious damage so it is very important to get it right. Don't worry though, as AC Avalanche recharge hoses can only work on systems of their respective type, eliminating the risk of using the wrong type.