Guys! You all got DIY clean your aircon blower ?

[yuri2]

why dont u vacuum either the inlet or outlet? Faster?

Not sure about color bleach, i have read articles on using vinegar.

I supposed I could vacuum. It just seems water contains the dust/dirt better.
When I drill holes in concrete walls, I'd have a damp cloth nearby to catch the dust.

You could use vinegar to clean. It's a weak acid. I use it to dissolve rust on tools. I also have citric acid powder. Generally acid can be used to clean metal. But you need to careful when handling the stronger ones.

Soapy solution may be a safer alternative to clean the aluminium coil, since soap lifts up dirt, and the water carries it away.
I think using a damp cloth with soap solution to slowly clean the blower may be a better idea, rather than blasting it with a jet of water.

 

[The_King]

My fcu still drips water from inside. I know it's not completely clean, still some black stuff at the end of the internal drain where I can't reach. But this time, I see some black stuff came out with the water.

Now, I use Vanish oxi-action powder, dissolved it in water, used hand sprayer and sprayed thoroughly at the coils, front and rear. Vanish, like Kao Color Bleach, is a oxygen-based bleach with sodium percarbonate. It does not damage clothing and unlikely to damage metal, as it uses oxygen molecules to clean.

It seems cleaner, the fcu is much colder. Hopefully, it doesn't leak water again, after this thorough cleaning. I didn't want to remove the coil again so I just spray over it.

have you try using this Vanish then soak it in a pc of aluminum foil? say soak for 1 hr then check, then again 2hr then 12hr then 24hr?

 

[yuri2]

have you try using this Vanish then soak it in a pc of aluminum foil? say soak for 1 hr then check, then again 2hr then 12hr then 24hr?

No. It's mainly sodium percarbonate, can google effects on aluminum.

I had to clean again, as it's seeping water. This time I see more dirt, black specks coming out, The rear of the 3 coils surrounding the blower still have some black stuff sticking to it.

I cleared some black stuff near the blower as it's blocking the water flow.

This time I use Vanish + soap powder to spray the coils. Then hose down with tap water, as I was lazy to setup the pressure washer. I use a damp cloth with detergent to slowly wipe the blower.

Important thing is not to hit the blower with water, as the dirt will rise upwards and stick under the coils and everywhere, that you can't see.

 

[The_King]

No. It's mainly sodium percarbonate, can google effects on aluminum.

I had to clean again, as it's seeping water. This time I see more dirt, black specks coming out, The rear of the 3 coils surrounding the blower still have some black stuff sticking to it.

I cleared some black stuff near the blower as it's blocking the water flow.

This time I use Vanish + soap powder to spray the coils. Then hose down with tap water, as I was lazy to setup the pressure washer. I use a damp cloth with detergent to slowly wipe the blower.

Important thing is not to hit the blower with water, as the dirt will rise upwards and stick under the coils and everywhere, that you can't see.

thanks for sharing your exp


for me best on all the info shared her

1. vaccum with brush on fin and blower
2. setup the stuff for pressure wash
3. spray ajax on fin and blower wait 5min
4. spray ajax and blower then brush it
5. then use sponge to block the blower from spinning
6. pressure wash from top to bottom
7. use 90c pressure wash to spray water on the back coil and spray wash from blower side (bottom)
8. use vaccum to blow dry

 

[Jun Jun]

Guys if the panasonic aircon nanoe x tips get black how do yall clean it to return it to normal silver?

 

[The_King]

Guys if the panasonic aircon nanoe x tips get black how do yall clean it to return it to normal silver?

i see online video they just spray water

 

[Jun Jun]

i see online video they just spray water

What type of water

 

[Alphas]

My fcu still drips water from inside. I know it's not completely clean, still some black stuff at the end of the internal drain where I can't reach. But this time, I see some black stuff came out with the water.

Now, I use Vanish oxi-action powder, dissolved it in water, used hand sprayer and sprayed thoroughly at the coils, front and rear. Vanish, like Kao Color Bleach, is a oxygen-based bleach with sodium percarbonate. It does not damage clothing and unlikely to damage metal, as it uses oxygen molecules to clean.

It seems cleaner, the fcu is much colder. Hopefully, it doesn't leak water again, after this thorough cleaning. I didn't want to remove the coil again so I just spray over it.

This is what I do, take an empty 1.25L pet bottle and add one small scoop of vanish powder and some car shampoo into it and fill it with water. Spray into the FCU coils one a week and this prevent buildup of dirt, mold and jelly.

 

[gregory_choo]

From chatGPT:
" You’re asking if sodium percarbonate (oxygen bleach) is safe for cleaning an aircon FCU (fan coil unit)."

Here’s the breakdown:

1. What FCU is made of

Aluminium fins (most delicate part)

Copper tubes (carry refrigerant)

Galvanized/stainless steel frame & screws

Plastic housing/drain pan


2. How sodium percarbonate behaves

When mixed with water, it becomes alkaline hydrogen peroxide.

Aluminium → can corrode or pit if the solution is too concentrated or left on too long.

Copper → also prone to oxidation.

Steel → may rust if exposed without protection.


3. Safety for FCU cleaning

Not recommended – because sodium percarbonate can:

Damage the aluminium fins (reduce heat transfer efficiency).

Oxidize the copper tubes.

Shorten the lifespan of the FCU.


Better alternatives

Use cleaners specifically labelled coil cleaner (neutral or mildly acidic type, usually pH ~6).

Or a mild solution of neutral detergent (dish soap) + water, followed by thorough rinsing.

For heavy dirt/mold, foaming coil cleaners sold for AC units are much safer.


If sodium percarbonate solution is very dilute (like laundry strength) and rinsed off quickly, it might not cause immediate visible damage — but repeated use will corrode metals over time.

 

[jumpthepig]

Important thing is not to hit the blower with water, as the dirt will rise upwards and stick under the coils and everywhere, that you can't see.

Try learn to remove the blower…Usually need to remove just a few Phillips screws….then bring the blower to toilet/washing bay for complete wash - Safer and more clean.

 

[bladez87]

What about those air con cleaning foam from shopee or lazada? Do those work?

 

[bladez87]

W

Thanks, me suddenly see this offer, so hoot first and confirm need for ac

Why need for AC?

 

[arcturuz]

my aircon will blow out stale musky air when turn on for the first few mins, after a while the smell will be gone.

there is no leakage, aircon still cold etc....

anyone know what's the issue causing this?

 

[Kirakun83]

you guys got try the nippon home fcu coil spray to clean the fan coil and mr mckenic to clean drainage pipe?

 

[jumpthepig]

you guys got try the nippon home fcu coil spray to clean the fan coil and mr mckenic to clean drainage pipe?

drainage pipe - use this(WET/DRY VACUUM CLEANER) $60 only.


https://www.courts.com.sg/karcher-w...jwMVHA-DAx2TzyXkEAQYAyABEgLSIfD_BwE#gad_sourc

 

[jumpthepig]

my aircon will blow out stale musky air when turn on for the first few mins, after a while the smell will be gone.

there is no leakage, aircon still cold etc....

anyone know what's the issue causing this?

Coil is dirty - possible.

 

[arcturuz]

drainage pipe - use this(WET/DRY VACUUM CLEANER) $60 only.


https://www.courts.com.sg/karcher-w...jwMVHA-DAx2TzyXkEAQYAyABEgLSIfD_BwE#gad_sourc

very cheap, shopee can't find so cheap also

 

[ahnyaahnya]

Couple of days ago, I realised that one of my units is spoilt ( last time I switched it on was 2- 3 months ago).
Mitsubishi..
No wind . And instead of 2 steady green lights coming on, it had only 1 blinking light.
Does anyone have any idea as to the cause?

 

[noinimod]

my aircon will blow out stale musky air when turn on for the first few mins, after a while the smell will be gone.

there is no leakage, aircon still cold etc....

anyone know what's the issue causing this?

Blower wheel is dirty. Condenser coil/fins are probably fine. You'll regain back the 'fresh' smell after the blower is washed down. Vacuuming the blower wheel doesn't get rid of much dirt because the dirt is all embedded deep inside the nooks and crannies. It's still cold now but you'll notice the cooling efficiency start to drop off eventually.

As a side note, the blower wheel gets dirty fast, around 3 months if you sleep every night with air con. If your house environment is more dusty than usual, then even more often.

The condenser coil/fins really don't need that frequent washing compared to the blower wheel.

If you're using Mitsubishi Starmex, learning to remove the blower wheel and washing only the blower is not difficult and makes your routine washing a lot less messy. No need to pressure wash the condenser coil and clean up the mess later.


For other brands, removing blower wheel may be more tricky, so your mileage may vary.

IMO, a lot of fuss around what chemicals to use. If you clean regularly, then normal water will do. And you feel a lot more safe knowing you're not breathing in whatever residue chemicals were used to wash the air con. If you can smell the chemicals after your wash, you're definitely breathing it in. Some of these washing liquids have added fragrance chemicals that are especially sticky and linger very long in the condenser coil.

A lot of chemicals are definitely too strong for the condenser coil and will corrode it over time, especially if the washing wasn't done thoroughly.

 

[bladez87]

Waa this is even cheaper than the WD2.

drainage pipe - use this(WET/DRY VACUUM CLEANER) $60 only.


https://www.courts.com.sg/karcher-w...jwMVHA-DAx2TzyXkEAQYAyABEgLSIfD_BwE#gad_sourc