How do I maintain my HVAC system?
Replace filters monthly, clear outdoor unit weekly in season, schedule professional tune-ups twice a year — proper care extends system life by 5+ years.
Monthly
Replace or clean filter. Visually inspect outdoor unit and clear debris. Listen for unusual noises. Check thermostat batteries.
Seasonal
Spring: AC tune-up ($85–$200), clean condenser coils, check refrigerant levels. Fall: furnace tune-up, inspect heat exchanger, test thermostat schedule.
Annual deep care
Duct inspection every 3–5 years. Insulation check. Replace UV bulbs. Calibrate thermostat. Replace humidifier pads.
DIY vs pro
DIY: filters, outdoor unit clearing, thermostat. Pro: refrigerant, electrical, gas, deep coil cleaning.
Frequently asked questions
How often should I change my filter?
Standard 1" filters: every 1–3 months. Thicker pleated filters: every 3–6 months. More often with pets or allergies.
Keep reading
What it costs
Before you call a pro
Common problems
Questions answered
- What is the average HVAC repair cost?
- How much does a HVAC technician cost?
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