Filters should be cleaned or replaced every 1-3 months during peak usage to maintain efficiency and air quality.

Most central air conditioners last between 10-15 years with regular maintenance.

Annual maintenance, typically before the cooling season, helps ensure optimal performance and prevents breakdowns.

Look for the SEER (Seasonal Energy Efficiency Ratio) rating; higher SEER ratings indicate better energy efficiency.

AC size depends on your home’s square footage, insulation, and climate zone. A professional can perform a load calculation for precise sizing.

Frequent repairs, high energy bills, uneven cooling, or an aging unit (10+ years) may indicate it’s time for a replacement.

78°F (25°C) is recommended for energy savings when home, with a slight increase when away to reduce energy use.

Some noise is normal, but loud buzzing, rattling, or squealing can signal an issue that may need professional attention.

Warm air could result from thermostat settings, refrigerant issues, or airflow blockages, requiring inspection.

AC installation involves complex electrical and refrigerant handling; it’s recommended to use a licensed professional.

Refrigerant absorbs and releases heat to cool the air; a leak or low refrigerant level can reduce cooling efficiency.

Regular maintenance, sealing leaks, using a programmable thermostat, and shading the outdoor unit can enhance efficiency.

A musty smell may indicate mold in the system, usually from excess moisture, and requires professional cleaning.

Yes, especially if filters are dirty or there’s mold growth, which can circulate allergens and pollutants.