Heard a strange noise coming from the Heating, Ventilation plus A/C that nobody else could hear

I realized that I forgot to change the air filter for the Heating, Ventilation plus A/C unit! So I turned off the Heating, Ventilation plus A/C method plus changed the air filter

When I was enjoyable with my family plus enjoying some TV, I decided it was a little warm in the house, and so I got my iphone plus adjusted the temperature control settings via the smart control unit… It was nice when the came flowing from the Heating, Ventilation plus A/C vents, but I thought I heard an unproper noise. I asked my wife if she heard something strange, although she said she didn’t hear anything. So I just thought nothing of it, however then it seemed enjoy the noise was becoming louder. I asked again if anybody heard anything strange, however everybody said they heard nothing. I thought maybe there was an issue with the cooling system, so I went to check the Heating, Ventilation plus A/C unit. It didn’t seem enjoy there was anything wrong, but I did hear some kind of high pitch noise that seemed to be coming from outside. I went out there plus it was the condenser unit that was making this noise. I entirely remembered cleaning out the condenser in the Springtime, so it wasn’t blocked up or anything. I was trying to suppose about what the issue could be plus if I should call up the Heating, Ventilation plus A/C dealer… Then I remembered something that was important. I realized that I forgot to change the air filter for the Heating, Ventilation plus A/C unit! So I turned off the Heating, Ventilation plus A/C method plus changed the air filter. The seasoned air filter was easily filthy plus blocked up truly bad. I realized that was truly making the method struggle quite a bit; When I turned the method back on, there was no more noise coming from the condenser unit!

Indoor air cleaning system