Monthly: check and replace filter. Seasonally: spring AC tune-up and fall heating tune-up. Annually: professional inspection, duct cleaning if needed, check refrigerant, clean outdoor unit. Regular maintenance extends system life by 3-5 years.
Monthly Filter
Check filter monthly. Replace every 1-3 months. Dirty filters reduce efficiency and airflow.
Seasonal Tune-ups
Spring: AC service. Fall: heating service. Professional inspection each season.
DIY Tasks
Keep outdoor unit clear of debris. Check condensate drain line. Ensure vents are unobstructed.
Signs of Problems
Uneven cooling, strange noises, higher bills, poor airflow, or system short-cycling.