Q: a/c making boiling noise

asked by on

When I turn on AC when its hot outside, I hear boiling noise. As if something is boiling near or behind the glove box. This does not happen when heater is turned on. Immediately noticeable when car is in hot sun.

My car has 135000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. The noises you are hearing may in fact be bubbles in the system. If the refrigerant is low, there may be air caught in the system instead. As the air conditioner processes and vaporizes the refrigerant, the air processes differently, and makes the sound of bubbles. The best thing to do first, is simply to have the system recharged. Considering the circumstances, it is advised that you do not use an at home charge kit. These kits only connect to the low pressure side. To properly regulate the pressure, add refrigerant, and remove air, you need to hook up to both sides of the AC system (which requires a special set up). If there are other issues with the AC, you will be able to find them easier with it fully pressurized. For more help recharging the AC, contact our service department to schedule an appointment.

Was this answer helpful?
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. a/c making boiling noise

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: Accelerator goes all the way to the floor but the car won't revive up or move

Hi There, It sounds like you may have a faulty throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the gas pedal. Based...

Q: How do I use the max air conditioning?

The max air conditioning feature is an extra powerful version of the air conditioning, and can be used in extremely hot weather conditions, or when you need to cool the car in a hurry. To use the max air conditioning...

Q: Can it need a 4 wheel alignment. I was told it doesn't have adjustments like typical cars.

Your vehicle can have a 4-wheel alignment done to adjust the front and rear of your vehicle to specifications. If you had an alignment done, then the repair facility should of been able to supply the print of the before-and-after...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...