Test smoke alarms, carbon monoxide detectors, fire extinguishers, and all ground-fault circuit interrupters.
Clean or replace furnace filters (when in use), ventilation filters, humidifier filters, and range hood filters.
Vacuum heat registers and heat vents.
Inspect the roof, gutters, and downspouts for damage after storms.
Vacuum bathroom exhaust fan grill.
Vacuum refrigerator and freezer coils and empty and clean drip trays.
Clean drains in sinks, tubs, showers and dishwashers.
Seal tile grout.