Aircon Cleaning Schedule: What to Clean, and How Often

This is the schedule we work to for homes across Central Luzon, and what each visit covers. When a full clean is due, book an aircon cleaning and the technician cleans the filter, the coil, the blower and the drain in one visit.

The short answer

• Wash the filter every two weeks. That one is yours.
• Have the unit given a full clean every 3 to 4 months if it runs every day, every 6 months if it is used now and then, and every 2 to 3 months in a dusty, humid or coastal spot.
• Have it deep cleaned once or twice a year, or sooner when a full clean no longer clears a smell or brings the cooling back.
• Book the first full clean of the year in February, before the hot months.

1. 1 The filter is the only job on a short clock. Every two weeks is what Samsung Philippines tells its owners, and Midea Philippines gives two to four. It needs a tap and a shady place to dry.
2. 2 The full clean moves with how hard the unit works. Three to four months for a unit that runs every day, six for a guest room, and two to three where dust or sea air gets in.
3. 3 The deeper clean is once or twice a year. Sooner if a full clean no longer clears a smell or brings the cooling back.

The filter: every two weeks

The filter is the mesh behind the front panel, and it catches the dust before it reaches the coil. Samsung Philippines tells its owners to clean it every two weeks, Carrier Philippines says twice a month, and Midea Philippines says every two to four weeks. In a house near a highway or building work it fills up faster, and Samsung notes that a filter can block before the unit's own filter reminder comes on.

1. Switch the unit off at the remote and unplug it, or switch off its breaker.
2. Lift the front panel and slide the filter out.
3. Vacuum it, or rinse it under the tap from the back so the dust comes off the way it went in.
4. Let it dry in the shade. A wet filter put back grows mold.
5. Slide it back in, close the panel, and switch on.

The filter cleaning guide has more on doing it well, and the step-by-step home cleaning guide covers the panel and the vents as well.

The full clean: by how hard the unit works

A full clean reaches what you cannot: the coil behind the filter, the blower that pushes the air out, and the drain pan and pipe that carry the water away. Ours covers:

• Air filter washing or replacement
• Blower and fan cleaning
• Evaporator coil cleaning
• Drain pan and pipe clearing
• Outside of the unit wiped down
• Mold and odor treatment
• A test run after cleaning

How often depends on use. We recommend every 3 to 4 months for a unit that runs every day, every 6 months for one that is used now and then, such as a guest room, and every 2 to 3 months in a humid or dusty spot. The makers give longer gaps for lighter use. Midea Philippines gives every 3 to 6 months and shortens it to 3 for a unit that runs around the clock. Carrier Philippines says at least every six months, and says that matters most for a unit running 8 to 10 hours a day.

If you would rather not keep track, an aircon preventive maintenance plan puts the visits on a calendar, with a check of the electrics and the gas on top of the clean.

The deeper clean, when a full clean is not enough

Once or twice a year the coil wants more than water and a brush. Mold that has dried onto the fins, and grease in a unit near a kitchen, stay on through an ordinary clean. Shops call the deeper job a chemical cleaning, or a pull-down cleaning when the indoor unit comes off its bracket so it can be washed through.

The sign you need it is simple. If the unit still smells or still cools poorly after a general cleaning, the buildup is past what a general cleaning reaches. A unit that has sat unused for months is the other case. If it is clean and still not cold, the cause is something other than dirt, such as the gas or the outdoor fan, and that is a job for an aircon check-up first, then possibly an aircon system reprocess.

The outdoor unit and the drain

The outdoor unit pushes the heat from your room into the air outside, and it can only do that if air can get through its fins. ENERGY STAR's checklist says dirty coils make a system run longer and cost more to run. Between visits, keep leaves, plants and stored things clear of it. For the outdoor half of a professional clean, Midea Philippines lists rinsing the fins while keeping water off the compressor, and checking the drain hole at the bottom. Our maintenance visit cleans the outdoor coil and fan blades along with the indoor unit.

The drain is the part that is easy to forget. A blocked pan or pipe sends the water out of the front of the indoor unit and down the wall instead of outside, and ENERGY STAR warns a plugged drain can cause water damage in the house. A full clean flushes it every time. The water leaks guide covers the drips you can sort out yourself.

When in the year to book

PAGASA divides the Philippine year into a rainy season from June to November and a dry season from December to May, and splits the dry season into cool, December to February, and hot, March to May. Midea Philippines says March to May is when an aircon runs hardest and the deep clean should come before the peak. So the first clean of the year belongs in February. For a unit used every day, two more at four-month gaps land in June and October.

1. 1 February, before the hot months. March to May is when the unit runs longest and the heat is worst, so this is the clean that matters most and the one to book early.
2. 2 June, as the rains start. Four months after February, and the unit has just done its hardest three months of the year.
3. 3 October, late in the rains. Four months on again. A unit used now and then needs two a year instead: February, and again around August.

Signs it cannot wait for the schedule

• Weak air even on the highest fan setting.
• A musty smell when it starts. The musty odor guide explains where it comes from.
• A jump in the electricity bill with no change in how you use it.
• Ice on the coil or the pipes, which is covered in aircon freezing up.
• Water dripping inside.

Any of these means book a clean now rather than at the next date. If you are not sure which problem you have, the common aircon problems guide goes symptom by symptom. The older post on how often to clean your aircon in the Philippines covers homes with pets and offices.

Questions people ask

How often should an aircon be cleaned in the Philippines?

Wash the filter every two weeks yourself, and have the whole unit cleaned every 3 to 4 months if it runs every day, or every 6 months if it is used now and then. Near a busy road, building work or the sea, make it every 2 to 3 months.

How often should I clean the aircon filter?

Every two weeks. Samsung Philippines gives that interval to its owners, Carrier Philippines says twice a month, and Midea Philippines says every two to four weeks. In a dusty house it clogs sooner than that.

What is the difference between general cleaning and chemical cleaning?

A general cleaning washes the filter, the coil, the fan and the drain with the unit still on the wall. A chemical cleaning, which some shops call a pull-down cleaning, goes further for buildup that water and a brush leave behind. If a unit still smells or cools poorly after a general cleaning, that is the sign it needs the deeper job.

What is the best month to have my aircon cleaned?

February. PAGASA puts the hot dry season from March to May, and Midea Philippines says that is when an aircon runs hardest, so the clean that matters most is the one just before it.

My aircon has a self-clean button. Does it still need cleaning?

Yes. Midea Philippines lists its self-clean function and a professional deep cleaning every 3 to 6 months as two separate lines in the same schedule, so the button does not replace the visit. The filter still comes out every two weeks.

When to call us

When a full clean is due, book an aircon cleaning. If you want the visits on a schedule, with the electrics and the gas checked each time, ask for an aircon maintenance visit instead. Tell us the unit type and how many hours a day it runs, and we will say which interval fits.

Other guides

• Aircon capacitor: what it does and the signs it has failed

  The humming outdoor unit, the fan that will not spin, and why the capacitor is tested first.

• Aircon freezing up: why ice forms and what to do

  Ice on the indoor coil or the pipes, how to thaw it safely, and the three causes behind it.

• Aircon making noise: which sounds are normal and which are not

  Clicks and water sounds that are normal, and the rattles, hisses and squeals that need a technician.

• Aircon not turning on: what to check, and the 3-minute wait after a brownout

  Remote, breaker, the compressor’s restart delay, and the flashing lamp that means a technician.

• AVR for aircon: when you need one and how to size it

  What an AVR does in a brownout, which units already protect themselves, and sizing it from the nameplate.

• Aircon watts: how many watts a 1 HP aircon uses, size by size

  Running watts and kWh per hour for each size, how to read the nameplate, and starting watts for a generator.

• Types of aircon: split type, window type, portable and centralized

  How each is installed, how noisy and costly to run it is, which rooms suit it, and what a clean has to reach.

• What is freon, and why your aircon should not need a yearly refill

  The sealed loop, why low gas means a leak, the three refrigerants in Philippine units, and the refill myth.

• Aircon HP and room size: what each size cools, 0.5 to 2.5 HP

  The square metres each size suits in a shaded room and a hot one, with the arithmetic behind 0.6 HP.

• Common aircon problems, symptom by symptom

  Not cold, weak air, water inside, a smell, ice, noise, tripping and blinking: what each points to and what you can check.

• Aircon lifespan: how long it lasts, and repair or replace

  How many years a unit usually gives, what shortens it, and the signs that a repair is no longer worth it.

• Inverter vs non-inverter aircon: which costs less to run

  Kilowatt hours side by side at 2, 4, 8 and 12 hours a day, and the kind of use where a non-inverter is still fine.

• What size aircon for a bedroom, living room or kitchen

  Room by room: what each kind of room adds to the size you need, worked through for a sample two-storey house.

• Aircon energy saving tips that lower the bill

  Where the heat gets in, the setting and the fan, the timer, the cleaning, and reading the DOE energy label.

Sources: Samsung Philippines, “How to clean Samsung air conditioner filters”; Midea Philippines, “Aircon Cleaning Schedule in the Philippines: Filters, Self-Cleaning, and Professional Deep Cleaning” (3 June 2026); Carrier Philippines, “How to Extend Your AC Unit’s Lifespan: Cleaning Tips and Best Practices” (5 February 2026); ENERGY STAR, “Maintenance Checklist”; PAGASA, “Climate of the Philippines”. Read 23 October 2026.