Air conditioners, like most indoor appliances, by now you know this well enough, should not be making noises. When you do hear such noises emanating from your devices, you immediately suspect that something is up. But how to pinpoint the problem has always been at issue. And furthermore, many consumers have been rather tardy in letting things be, putting up with the noise for now.
After all, the machine is still seemingly working. Or so they thought. It is only later on that they learn their lessons when the damage is done and they have no alternative but to haul in the air conditioning technicians for commissioning work. The air conditioner humming can be explained. It is not serious. But at the same time, the noise is a telltale sign that a part or component inside the machine may have switched off.
There may also be loose parts in the machine and this is what could also cause the AC to vibrate. It has been pointed out through maintenance and repair operations that by leaving these issues unchecked, more damage could ensue. It could even be dangerous. Humming or other noises within the air conditioner could also mean that an electrical fault is imminent. And here then are a few other noises you can look forward to should you prefer to not subject your AC or HVAC system to regular maintenance inspections.
The AC could start banging. This is a clear sign that there is a loose or broken part somewhere inside. It could be a connecting rod, a crankshaft, or a piston pin, who knows, only your AC technician can work that one out for you. When the noises you hear is that of clanking it could mean the same thing. Loose or broken parts. Parts inside a sealed unit have also possibly failed completely. It has reached a point of no return.
Beyond repairing, these parts now need to come out and be replaced with fresh installations. Leave it like that and the entire system will eventually collapse. And where does that leave you? You need to throw this one away and get a new AC installed, for crying out loud. Ignore for now the noise being made about the clicking of electrical components at startup and shutdown points being normal.
There were never any clicking noises to begin with, so why now all of a sudden. It could just be that the persistent clicking noises is now a sign of defective controls or a failing thermostat. It is also possible that a larger piece of debris may have been sucked in through the air conditioner’s filter somehow. They also say that when this happens, a buzzing noise is typical. So, thankfully, there may be no long-lasting damage after all. It is now just a question of removing the filter and getting it cleaned as soon as possible.
Or replacing it with an entirely new filter altogether. And doing that makes no noise whatsoever.