When I was showing my buddy how to clean out his outdoor A/C condenser unit, I had to stress how important it was to shut off the power to the component before getting started.
I explained that he didn’t want to reach in there and clean things up and have the component turn on.
Also, you could electrocute yourself if you were not careful or even cause severe damage to the component which would cause the whole HVAC system to fail. He took note of all this while I went on to explain how to clean the inside of the component. I went over scrubbing the fan blades carefully so you do not bend them. Then we went on to taking out any debris inside the condenser. The last step was to carefully spray out all the debris that is stuck on the fin coils from the inside going outwards. You definitely don’t want to spray all the debris inside the outdoor unit because you want everything out of it. While we were spraying the fin coils, I pointed out that some of the fin coils were bent. He seemed worried like we damaged the equipment, but I explained to him that the fix was very easy for that. I pulled out the fin coil brush and showed him how to easily straighten the coils back without any issues. He tried it and could see how easy it was but I kept stressing that you have to be very gentle with the coils because they are easily damaged. When we had everything finished, we put the top back on the condenser unit and we fired the A/C system back on. My buddy was amazed at how much better the air conditioning was working, and the A/C was ice cold!