No, the day of. My mom had made a big deal about taking pictures and making a big family brunch before she left. I was alone at my grandfather’s house and getting to watch TV while playing a MMO simultaneously. Amazing day, until the phone call that upended everything.
Nearly all your major appliances in your home have a filter that needs replaced or cleaned on a regular basis (fridge, HVAC system, dishwasher, dryer, etc.). Doing so and doing a quick clean of the appliance will improve its efficiency, life span, and most importantly save you on your electric bill.
Not sure where the filter is or what maintenance to do? A quick Google search of “how to clean fridge filter” or “where is the air filter for my heat pump” should start to give you an idea of what needs done.