🌬️ 5 Reasons Your Air Con Is Blowing Warm Air
🌬️ 5 Reasons Your Air Con Is Blowing Warm Air
By Andrews Car Centre – Lincoln’s Trusted Air Conditioning Specialists
You expect your car’s air con to cool you down — especially on a hot day. So when it suddenly starts blowing warm air, it’s frustrating and uncomfortable.
At Andrews Car Centre in Lincoln, we regularly diagnose and repair car air conditioning systems. If your A/C isn’t cooling properly, here are 5 common reasons why — and what to do about it.
1. 🔋 Low Refrigerant (Gas)
The most common reason your air con blows warm air is low refrigerant — often due to a natural, slow leak over time.
Refrigerant (also called gas or coolant) is what absorbs heat and keeps the air cool. If levels drop too low, your system can’t do its job — and it often won’t warn you on the dashboard.
👉 A quick regas can restore full cooling power, usually within the hour.
2. 💨 Air Con Compressor Fault
The compressor is the heart of your A/C system — it pressurises the refrigerant and keeps the cooling cycle moving.
If the compressor fails or its clutch stops engaging, your air con might:
-
Blow warm air
-
Make strange noises
-
Work intermittently
This often requires professional diagnosis using dealer-level tools.
3. 🕳️ Leaks in the System
Even a small leak in the:
-
Condensers
-
Pipes
-
O-rings
-
Seals
...can cause your refrigerant to escape.
We use UV leak detection kits at our Lincoln garage to find hidden leaks quickly and recommend repairs before you regas.
4. ⚠️ Blocked Cabin Air Filter or Vents
Sometimes the cooling system works — but the airflow is weak or warm due to:
-
A clogged cabin filter
-
Blocked or damaged air vents
-
A faulty fan or actuator flap
These issues reduce the air quality and volume coming into your car, even if the refrigerant level is fine.
5. 🔌 Electrical or Sensor Faults
Modern vehicles rely on sensors and control modules to manage the air con system. A fault in any of these can stop the A/C from switching on or engaging the compressor.
We’ll scan your system with professional diagnostics to check:
-
Pressure sensors
-
Relays and switches
-
ECU faults or stored error codes
🧰 How We Fix It at Andrews Car Centre
When you book an air con check with us, we’ll:
✅ Measure gas pressure
✅ Check vent temperatures
✅ Inspect for leaks
✅ Test compressor operation
✅ Advise on whether a regas or repair is needed
We service both R134a and R1234yf systems on all makes and models.
📍 Book Your Air Con Diagnosis in Lincoln
Don’t suffer with warm air this summer. Get your A/C sorted today by the trusted local team at Andrews Car Centre.
✅ Same-day appointments available
✅ Fast regassing and repairs
✅ Free air con checks with selected services
👉 Call now, book online, or visit our Dixon Street garage in Lincoln. We’ll keep you cool.
🔍 Related Searches We Help With:
-
Why does my A/C not work?
-
Same-day regas Lincoln