Why Isn’t My Air Conditioner Blowing Cold Air?
Wanna be cool? There are many reasons why your air conditioning might be blowing warm air instead of the cold stuff you desire. If you’re reading this tip sheet, we assume that your vehicle does in fact have air conditioning (and not just the controls) and that you have already experimented with the controls.
If things are still not working, it’s likely for one of these three reasons:
1. A/C Compressor Failure
Do you hear a loud noise when you turn on your air conditioning? It could be a problem with the A/C compressor. This component is responsible for pressurizing the system.
How can you be sure? Open your hood and observe the compressor as someone turns on the A/C. (You can locate it in the owner’s manual.) Check to see if it engages: its clutch will begin spinning shortly after you turn on the A/C. If this doesn’t occur, the compressor is likely in need of replacement.
2. Clogged System
Between the condenser near the front of the radiator and the evaporator in the passenger compartment, there is a part called the orifice tube. It can become clogged on occasiona small obstruction can prevent the refrigerant from reaching the evaporatorresulting in a malfunctioning air condition unit. The system will keep air circulating, but it will be warm air.
Have you noticed a gradual change in the effectiveness of your air conditioning over time? This might be due to a refrigerant leak, which can occur at any part of the system line. Here’s how to check for a leak:
- Check for wet, oily pools or streaks coming from the seal or compressor shaft. This is evidence of a refrigerant leak.
- Find the sight glass under your hood. This is a small glass window near the accumulator that lets you peak inside the system. When the glass is clear and there is no cold air, this is often evidence of a leak. If you seem bubbles or foaming under the glass, you may be due for a refrigerant flush or recharge.
If there is a refrigerant leak in your air conditioning unit, it is fixed by replacing the leaking part. This is best left to a qualified mechanic, like the ones here at River City Nissan. Please note that it is also common for the level of refrigerant to reduce or leak over time. It’s normal to need an air conditioning recharge every five to six years, and this may not indicate a leak.
Diagnose & Repair Youre A/C System
Do you suspect something is malfunctioning within your air conditioning unit? Bring it in to the River City Nissan Service Centre for fast diagnosis and expert replacement services. Request an appointment today.