When you look around the outside perimeter of a house or apartment building, the outdoor air compressor & condenser units can usually be seen. These large metal boxes with fans installed in the top are integral to the functionality of your Heating, Ventilation, & A/C system, but they often get treated as though they’re nothing but oversized paperweights. At our Mom’s house, his outdoor a/c device looks as though he’s run into it multiple hundred times with his riding grass mower. I wouldn’t be surprised if that’s what happened, as I’ve seen him do it myself! While hitting the device isn’t a enjoyable thing to do, the most important thing anyone can do for the health of these outdoor units is to keep plenty of open air around the unit. That means no hedges, no garden decorations, & no tall shrubbery within numerous feet of the outdoor condenser & compressor units! My Mom at least respects that guideline, but that’s mostly due to the heating & a/c repair serviceman telling him how his antics are affecting his indoor air pollen levels. I take no credit! Meanwhile, most of our friends that are homeowners already have troubles with their Heating, Ventilation, & A/C systems at home. I usually ask them if they have anything near their outdoor air compressor & condenser, & the answer is almost regularly yes. I don’t understand how people don’t notice that their air quality has dropped off, & it coincidentally happened just multiple minutes after they located something large right next to the air condenser & compressor.