There are two main issues in the condenser that can lead to a car ac system blowing hot air.
Car air conditioner blowing hot air.
The first is a blockage anywhere in the series of tubes in the condenser.
When it is not which of course occurs on the most brutally hot day of the year the a c suddenly becomes a cruel joke blowing warm stale air into your vehicle.
What happens is this.
In most cases it s due to a loss of refrigerant in the system.
But if you re a diyer you may not prefer it.
Any degree of blockage in the system can lead to the condenser not being able to execute its principal function.
Your car ac is actually a heat exchanger that recirculates warm air from inside the cabin and replaces it with cold air.
Hot liquid refrigerant stays hot.
Sometimes car air conditioner blowing hot air instead of cold air.
If this isn t the case the next car air conditioning troubleshooting.
If your car ac is blowing hot air there are a few places you can check for problems before paying a shop for repairs.
Ac compressor and clutch.
If it s hot in a situation of car air conditioner blowing hot air then it s an engine problem.
This is the large pump at the front of the engine.
Why is your car ac blowing hot air.
If this is the case be sure to take it into a mechanic as quickly as you can.
This typically happens if the engine is too hot so be sure to check your car s temperature.
Refrigerant that s in a liquid state makes its way to the evaporator where it boils as warm air from.
The most obvious part of your ac system you will see under your hood is the ac compressor.
Most cars have ac systems that are belt driven.