[dbbdrake]

my coldspot air conditioner is probably older thasn 20 years but still works good. but the last two days it is starting to squeak which is very annoying. i don't know how to take it out and open it up to see if i can see what may need oiled. what can it be?

[RoseJan123]

Most of the increasing noise is often just from vibration.

First make sure it is on a solid pad. Some of the pads they use are very light. That can leave them rocking and vibrating.

Other than that you have to just find the parts that are vibrating and "adjust" them . That may mean shimming with rubber, tightening screws, even bending a panel or tubing.

Sometimes the copper tubing off the compressor is up against something. That will make a lot of noise. Because compressors vibrate by nature. But of course you need to be gentle because you don't want to kink or break it or you are in for big trouble.

And sometimes the rubber bumpers the compressor sits on can be replaced to help dampen it.

BUT in most cases excessive vibration from a compressor means it is going bad. The compressor itself, inside the can, is a small pump and motor that sits on three springs and excessive vibration means one of the springs is bad or broken. There is no fix for that other than replacing the compressor.

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[Custom Coils]

You should keep your air conditioner on a rubber sheet and then fix it again..

As per my point of view it is the time to change your air conditioner as you are stating that it is about 20 years old. So I think it won't work as before now.

[kooler]

I usually find that noisy 'squeak' to be a fan motor's bearings going out... And it's possible that 20+ year old system may have a motor that can be oiled.. Locate the motor and look to see if there are small plugs on each end that can be removed for dropping in oil... They could be plastic or metal... Appliance Parts stores sell bottles of oil that come with a telescopic spout that is ideal for this application... APPros will have them but I suppose that it would have to ship UPS since mailing oil is restricted... Otherwise it's time for a new motor which APPros can handle that as well with a simple phone call.. cheers, kooler