It is a low background noise coming through the wall from the ac cables that come from the ac fans and course down through the condo walls.
Ac unit on roof vibration.
Slide an anti vibration pad under one lifted foot.
Since the noise vibration can be felt to a certain extent in the master bedroom which is about 20 feet away from the units i guess it would make sense that the noise is not just from the units on the roof and i was told that the ductwork travels towards my master bedroom and then makes a 90 degree turn to go to the respective units.
At first opportunity i got on roof and removed cover for inspection but i.
The ground around the outside unit actually shakes.
The motor shaft could be bent.
It has been running very well until a cross country trip starting this may and ending in july.
It is present anytime a ac unit on the roof turns on.
These cables or condensers or whatever they are are wrapped but still vibrate to the touch up on the roof as they go down through the condo.
The central air conditioner is by far the nosiest i have ever heard.
You can match the final location of the feet by observing the air conditioner s concrete pad marks from the feet are commonly visible and can.
The first time i turned the unit on it started vibrating quite badly.
Switch off the power supply.
Climb up using a ladder and find the ac on the roof.
The vibration can be heard inside and outside.
My old 28 years old unit made half the noise and had no vibration.
Locate the screws and bolts that hold the ac in proper position on the roof.
With that said let s look at a few reasons why your air conditioner may cause unusual vibration.
To check for excess vibration on the unit you will have to touch the window on which the unit is mounted and if it happens that the vibration on the unit is high consider calling the person who did the installation to fix the problem.
The screws bolting it to the roof could be loose you ll need to go up on the roof and take the cover off and then tighten all of the screws and bolts on the air conditioner to make sure they are not loose.
You can probably find them drilled into an existing concrete pad.
Buy four vibration pads one for each corner of the unit.
Bryant has changed the unit and this second unit is just as nosier.