Air Filters: It’s perfectly fine to use inexpensive filters, but be sure to change them monthly during peak usage and quarterly during non-peak. This will allow the appliance to operate more efficiently, increase longevity, and save on the wallet.
HVAC: Check to ensure primary condensation line is not clogged or obstructed. A clear indication of it being compromised is if the secondary condensation line is dripping or the pan at the furnace is holding water.
Plumbing: Set some time aside (monthly or quarterly) to check for leaks around toilets, under sinks, washer and at fixtures. It’s worth catching these early since they can be quite costly short and long term.
Dryer: Take a peek behind the dryer at the duct connection and at the outside vent for lint build up. Vacuum at least once per year.
Garage Door Opener: Test the sensors during operation and test the auto-reverse by giving a little tug upward as the door is closing to ensure they are operating correctly. Its an easy item to adjust and great safety measure.
Windows: Check the caulking around windows and address where necessary and try to make an effort to check for broken seals. Some ways of detecting are if it looks misty, foggy/hazy, dirty ,streaky, and you may even see tiny water droplets in between panes. With LOW-E windows you will even see color changes as the metal fill coating oxidizes.