5 Common AC Noises and What They Could Mean

Has your AC unit or return vents been making any unusual noises? Here are 5 common noises that your AC could be making and what they mean in terms of repair.

[@joeblack7326]

From my experience, 95% of the time, simply just cleaning the AC inside thoroughly for about 30 minutes always fixes any noise problem

[@yourancientancestor]

How does one do this lol I have 0 knowledge of HVAC systems

[@AhmedBhayat]

Mine sounds like a loud clicking noise with no sound/hum after that when switching the AC to the on position and then another clicking sound when switching to the off position. Sounds like the blower in the furnance is working but very minimal air flow at the vents and the fan on the AC unit outside does not spin. Any idea what that could be?

[@scrapperd7827]

Mine is humming

[@kv6256]

same

[@akhilkohli8861]

Did you sort it out? What's causing the sound mine is making after an interval loud humming noise

[@kv6256]

@akhilkohli8861 ac guy came...cleaned something out...went back to the same noise next day. Waiting for him to come again

[@scrapperd7827]

He said he cleaned the coils and added a part to it, wasn't the compressor though, forgot the name of the part

[@l33VI08]

What about when you hear rattling only when the unit turns on

[@-n-6969]

what about high pitch whine noise during startup? its only on startup when the ac is in full speed..

[@AmanXdeep]

Same in mine

[@elyaly7241]

Yup. Mine too, a squealing noise...

[@AmanXdeep]

@@-n-6969 the high pitch sound is from gas vent as i try to find..its start coming when AC lower the temperature .when its done Ac start working normally so for me its no problem

[@jamey6236]

Thank you so much!

[@alialhasan7008]

My ac sounds like the 1st one...
What should I do now....?

[@cadaverdewtch9450]

my AC unit produces cymbal crash sound when power goes off. What does that mean?

[@its_dimski]

Sounds like an AC/DC type of problem

[@mvprix]

When cooling mine sounds like whistling inside when on
When heating mine sounds like cymbal crash / heat impact when I turn it off

[@CGISquirrelIncorporations]

what if i hear all of them

[@mvprix]

My ac sounds like the second