Wipe clean or vacuum the unit to remove dirt and debris.
How to reduce noise from window ac.
If the noise is coming from inside the window unit check for twigs leaves or other debris.
Be sure all the mounting screws are present and are tightened properly.
For vibration noise in the a c case or the window.
You should then turn the window air conditioner on and press your hand against the sash.
If you have any tips let us know in the comments below.
If you find that as you press your hand against the sash the sound changes in pitch then you should put some wooden shims in the gap between the window air conditioners frame and the sash.
You should check carefully the window all round the unit.
If adjacent windows rattle tighten and if necessary apply new putty or caulking to cancel vibrational noise.
Get a newer and better ac unit that creates less noise.
Getting a custom measured window insert cut to fit the shape of the window a c unit will block window air conditioner street noise.
If however the pitch of the noise changes when you press your hand on the glass you.
Tips to help quiet down a window air conditioning unit.
Here are some of the things i have found over the years to help quiet a unit.
You should tighten the screws holding the front panel onto the unit.
They are made of acrylic which blocks better than glass and surrounded by tubing on all sides.
The noise a window a c unit makes does vary between manufactures but there is somethings you can do to help get rid of unwanted noise.
If the window frame is vibrating fill the gap with wooden shims or with foam weatherstripping applied to the a c frame where it meets the window frame.