Q: AC not blowing cold air after charging

asked by on

I had the AC charged. It worked one time, but now only blows hot air.

Hello, if you had it changed and it worked briefly, you probably have a leak in the refrigerant system. The refrigerant is under pressure and changes pressure and temperature as it goes thru the system. If there is no refrigerant the system won’t blow cold air. Once the leak is found, the part that has failed can be replaced. Once the system is ready the refrigerant system need to be connected to a vacuum pump to suck the system down to almost 30 inches of mercury for a half hour or more. The system is then leak tested in a vacuum state and once system integrity is good, the system will then be filled with refrigerant. If you need assistance, I would enlist a certified mechanic to locate the coolant leak and have this issue repaired.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. AC not blowing cold air after charging

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My daughter's check engine light came on with a code of P1004 on a 09 Dodge Charger. We changed the short runner valve, the light

The short runner valve actuator that you replaced is just the electric motor that moves the short runner valve to its correct position. However, the problem is likely that the valve itself within the intake is sticking. Using an appropriate...

Q: Coolant system temperature oscillates - 2001 Hyundai Santa Fe

Hi there. With having your radiator flushed twice and having a thermostat replaced, I believe that the problem lies within the water pump. There is a build up in the water pump and is causing the water to fluctuate. Remove...

Q: A/C blows only hot air

Hello. This can be a module, but it can also be an issue within the system. I typically check the system pressures first. If the pressures are fine and are functioning right then the actuators under the dash need to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...