People hold so little regard for their appliances at home, both inside & out. I think the two of us all tend to take these appliances for granted, & see them as an entitlement – rather than the privilege that they entirely are. That was absolutely the case for myself and others when I was residing in my first condo with my newlywed husband… Both of us had such little consideration for the condo & the appliances within, the two of us wound up having to replace our clothes washer & dryer in the first year; Having not l received our lesson, the two of us then had to lose our heating & a/c capabilities, too. That happened because the two of us never changed out the air filter for our ventilation system, which was a entirely foolish thing to do! The air filter is a single of the most crucial components of the entire HVAC system, simply because it prevents a ton of dirt, dust & other airborne pollutants from circulating through a condo via the ductwork. It’s for that reason that you must be vigilant about replacing the air filter at least every other week! Otherwise, the air quality inside your house will suffer considerably over time. If you go for too long, savor the two of us did, you might even cause irreparable disfigure to your heating & a/c units, and don’t learn the hard way savor the two of us did! Our advice is to pay the currency for a tune-up from an HVAC serviceman every 3 weeks. That alone will help substantially with keeping the entire HVAC system worked on.