Skip the auto shop - Our mechanics make house calls

Q: Air conditioning blows hot air

asked by on

The air conditioning blows hot air and won't take Freon charge

Hello. If the AC will not blow cold air, then it may indeed be low on refrigerant. Most AC systems will not allow you to simply add refrigerant without jumping the compressor to get it to turn on. If the system is full, then the problem may be electrical. A mechanic would install a pressure gauge set to see if the system is low. If it’s not, then the voltage at the compressor will need to be checked and if there is nothing there, an electrical diagnostic will need to be done. If this is not something that you plan on doing, then I would recommend the help of a certified mechanic, like one from YourMechanic, to inspect the failing AC system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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. Air conditioning blows hot air

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: Advice on installing electrical fan on a '96 F-150

Sure, you should add it. It's a '96, it's 20 years old, get the biggest electric cooling fan you can find. You can just get it wired and setup the relay and toggle switch. Then you can turn it on...

Q: Rough shifting, slow shifting, noisy trans

This is a common problem, and Nissan is aware of it. They have released a Technical Service Bulletin NTB13-079c that outlines the procedure of installing an add-on cooler to help keep the transmission fluid in check. In some cases the...

Q: Jerking while accelerating now it won't start had to get tow home car felt as if it was rolling

Based upon the symptoms you are describing, it sounds like you may have a faulty camshaft position sensor. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and fuel injection timing. It gathers...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...