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DIY AC Cleaning: Save 200 Yuan and Extend Your Unit's Life by Years

Money Saving, AC Cleaning, Summer Prep, Appliance Care —

Summer’s coming, and your AC is about to go back to work.

But wait! Before turning it on, there’s something you must do—clean it.

I paid 200 yuan for professional cleaning last year. Then I discovered DIY is totally doable, and not as hard as you’d think. Here’s how to save that money for a nice meal instead.

Why you absolutely must clean your AC

Here’s something scary: an uncleaned AC filter is dirtier than a toilet. Not exaggerating—there’s actual test data.

Filters packed with dust and bacteria blow out air loaded with microorganisms. Long-term exposure can cause allergies, coughing, even respiratory issues.

Plus, dirty ACs use more electricity. A clogged filter restricts airflow, forcing the unit to work harder, which drives up your bill.

Preparation

Simple tools needed:

  • Screwdriver (usually Phillips)
  • Soft brush or old toothbrush
  • Spray bottle
  • Cleaning solution (AC-specific cleaner, or diluted vinegar/baking soda solution)
  • Clean cloth

Most important: unplug the unit first! Safety first.

Step 1: Remove the filter (easiest part)

Wall-mounted AC filters are usually behind the front panel. Open the panel (typically clips on both sides), and you’ll see the filter.

Filters are usually held by simple tabs—push gently to release. If it hasn’t been cleaned in ages, it’s probably filthy. Take it to the balcony or bathroom to work on.

Rinse under running water, scrub gently with a soft brush. For heavy grease, soak in dish soap first.

After rinsing, dry completely! Must be fully dry before reinstalling, or mold will grow.

Step 2: Clean the cooling fins (intermediate)

Those aluminum fins behind the filter are the cooling fins—bacteria central.

Fill your spray bottle with cleaner, spray evenly across the fins. Foam will form; wait 10-15 minutes for the cleaner to work.

Then wipe gently with a cloth or soft brush. Don’t press too hard—fins are delicate, and bending them hurts cooling efficiency.

Finally, spray with clean water to rinse off foam and dissolved grime.

Step 3: Exterior and vents

Wipe the exterior with a damp cloth. Use an old toothbrush for vent gaps.

If vents smell musty, spray with diluted vinegar, wait a few minutes, then wipe—very effective for odor removal.

About hiring professionals

If you’re renting, or your AC hasn’t been deep-cleaned in over 5 years, consider professional service once. They use high-pressure steam machines to clean internal ductwork you can’t reach.

But for routine maintenance, DIY is totally sufficient. I recommend cleaning filters every 2-3 months, and doing deep cleaning before each summer.

One money-saving tip

Don’t set the temperature too low—around 26°C is most efficient and healthiest. Every degree lower increases power consumption by 6-8%.

Also, for short outings (under an hour), don’t turn off the AC. Frequent on/off cycles actually use more power and strain the compressor.

Have you ever cleaned your AC, or is this news to you?

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