Pet urine is acidic and can corrode your outdoor HVAC coil. Pet dander and hair clog indoor air filters, requiring more frequent changes. Keep pets away from your outdoor unit.
Pets can damage your system. I've seen more than one call of outdoor coal being damaged from urine from a pet for some reason. I don't know why the dog was using the unit as a place to urinate, but that could be a problem. Their urine is acidic and that's not good for the coil on that unit. So pets can damage your unit if you keep the pet inside. Make sure you check that filter a little more often than usual because pet dander, pet hair can get airborne and it should be called by the filter. Have you ever had pets urinating on your unit? Let me know in the comments.
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