What is an AC recharge?
Your car’s air conditioning relies on refrigerant, which is also called coolant or freon. There are different types of refrigerant, so you need to know what type your vehicle uses.
An AC recharge simply means draining and refilling your car’s refrigerant. Usually, you only do this process if your car’s air conditioning system isn’t making cold air.
The AC might stop producing cold air if there’s a breach in the HVAC system, like a worn-out seal or broken evaporator coil or condenser coil. In this case, it’s important to get the whole system inspected so that you can repair the mechanical issue. Otherwise, recharging the system will be a temporary fix.
How do I know if my car is low on refrigerant?
Here are the most common symptoms of low coolant levels:
AC doesn’t work at all: If you turn on the AC unit, it just blows hot air or warm air. This can also be a sign that any number of AC components need to be repaired, which is why it’s so important to get an inspection.
AC starts cold but doesn’t stay cold: Schedule an inspection if your car’s thermostat starts out cool when the AC runs but begins to heat up after a few minutes.
Coolant leaks near the AC refrigerant lines: Pop the hood and take a look at the air conditioning lines. If you spot frost or wet spots on them, take your vehicle in for an inspection.
Clicking sounds with no functioning AC: You might hear a click when you try to turn on the AC, but if no cool air blows, it means the AC clutch isn’t engaging. The clutch can’t work if the refrigerant level is too low, so your car might be due for a recharge.
How long should an AC freon last in a car?
The coolant in your car’s AC lasts almost indefinitely since it’s a closed-loop system. It won’t get used up or go bad. Your car only needs a freon recharge if it’s been leaking—in which case, you’ll also need to figure out which AC component needs to be repaired or replaced.
Can I replace the AC coolant in my car myself?
You’ve probably seen DIY AC recharge kits for sale at auto parts stores. While this can be a quick fix, it’s not recommended. Refrigerant is incredibly dangerous and the EPA regulates its handling. Plus, if your car was built before 1995, it uses a refrigerant that’s no longer produced, so recharge kits won’t work for it.
To ensure proper disposal and charging, leave the AC recharge to certified HVAC professionals. Most importantly, they can check for leaks or underlying problems with the AC that might be causing the refrigerant to leak in the first place.