Common warning signs include reduced cooling efficiency, weak airflow from vents, unusual noises like grinding or squealing, frequent cycling on and off, high humidity levels indoors despite the AC running, water leaks around the unit, ice buildup on refrigerant lines, or foul odors when the system operates. Rising energy bills without increased usage can also indicate declining efficiency. If your air conditioning system is over 10-12 years old and showing multiple symptoms, replacement may be more cost-effective than repair.

Central air conditioning uses ductwork to distribute cool air throughout your entire home from a single indoor air handler, providing whole-home cooling with centralized control. Ductless mini-split systems don't require ducts, using individual indoor units in specific rooms connected to an outdoor compressor, offering zone-by-zone temperature control and easier installation in homes without existing ductwork. Mini-splits are more energy-efficient since they avoid duct losses, cost less to install in ductless homes, and allow customized comfort in different areas, while central air conditioning provides more uniform cooling and works better for larger homes with existing ducts.

Air conditioning systems should receive professional maintenance at least once per year, ideally in spring before the cooling season begins. Annual service ensures efficient performance, reduces energy costs, prevents unexpected breakdowns during heat waves, and extends equipment lifespan. Homes with pets, heavy AC usage, or dusty environments may benefit from service twice yearly. Between professional visits, homeowners should change air filters monthly during cooling season, keep outdoor units clear of debris, and monitor for unusual noises or performance issues.

If your air conditioning system is less than 10 years old and the repair cost is under half the replacement cost, repair is usually the best option. However, if the system is aging (over 12-15 years), frequently needs repairs, uses outdated R-22 refrigerant, or has become inefficient with rising energy bills, replacing it with a new high-efficiency unit could save money long-term. Modern air conditioning systems are significantly more efficient (up to 40% energy savings), quieter, and offer better comfort control than older models. Our experts can assess your system and provide honest recommendations based on your specific situation and budget.