A/C Hissing Sound


#1

Hi,

When I turn on my a/c, it gives this short hissing sound for a second or two before it goes away. Then along the road i heard random hissing sounds (not often nor consistent, just happens every now and then) that lasts for a sec or two.

Could this be a future problem or is it normal?

Thanks.


#2

Of course, year make and model are always a great benefit. But, AC cools when refrigerant escapes through a valve or orifice, spewing from a liquid in excess of 200 psi to vapor at 30 psi.


#3

This is the normal sound you will hear in the cabin when the compressor cycles on and off. On some cars it’s more noticeable than others.