We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › A: During the hot summer months in particular, homeowners rely on their AC unit to stay ...

Clicking, buzzing, rattling, banging, grinding, hissing and whistling noises each point to specific problems, ranging from ...

If your AC is making strange noises, the sound may help identify the issue. Hissing: A Possible Leak A hissing sound can indicate a refrigerant leak, leaking ductwork, or an internal valve issue.