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how often to service aircon

For most homes, a good rule of thumb is to service your aircon at least once a year , with many experts now recommending every 6 months if it’s used often or you live in a hot, humid, or dusty place.

Quick Scoop

How often to service aircon

  • Standard use (typical home):
    • Full professional service once a year is widely recommended to keep efficiency and lifespan in good shape.
  • Heavy use or hot/humid climates (always-on AC, tropical cities, pets, dusty areas):
    • Aim for a service every 6 months (often spring and autumn) to prevent breakdowns and high power bills.
  • Light use (rarely used vacation home, mild climate):
    • You can sometimes stretch to every 18–24 months , but yearly is still safer for avoiding hidden issues.

Filters and basic cleaning

  • Filter cleaning/replacement:
    • Clean or replace filters about every 1–3 months , more often if you have pets or allergies.
  • Indoor unit cleaning:
    • Wipe the outer panels and keep vents dust-free every few weeks so airflow stays strong.

Signs you need immediate servicing (don’t wait for the schedule)

  • Weak or uneven cooling, rooms not getting as cold as before.
  • Strange noises, rattling, or vibration when the unit runs.
  • Bad smells from the vents or visible mould/dust buildup.
  • Sudden spike in electricity bills with no change in usage.

What most people say in forums

Recent forum discussions show many users in hot, humid cities booking quarterly or 6‑monthly servicing , especially when landlords or condo rules encourage more frequent cleaning. Some still do just annual servicing and rely on DIY filter cleaning in between to save money.

Simple rule to remember

  • If your AC is on most days: service every 6 months.
  • If your AC is on only during hotter months or some evenings: once a year is usually enough.
  • If you notice any warning signs, book a service right away instead of waiting for the next scheduled date.

SEO notes (for your post):

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Information gathered from public forums or data available on the internet and portrayed here.