Inconsistent AC maintenance leads to reduced energy efficiency, higher energy bills, and frequent breakdowns due to dirty filters, clogged coils, low refrigerant, and thermostat issues. Regular maintenance extends the lifespan, improves indoor air quality, lowers energy consumption, and prevents expensive repairs. Homeowners should schedule professional checks, replace/clean filters, inspect/clean coils, check refrigerant levels, and calibrate thermostats. Advanced maintenance strategies like energy management systems, zonal cooling, and system upgrades can further enhance efficiency. Barriers to consistent maintenance include lack of knowledge, perceived cost, and time constraints, which can be overcome through education and scheduling tools.