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Mat Bruce
01-02-2009, 02:26 AM
I tried to wash my air-cond with detergent(orange acid),water and hose. Made a mess but there was improvement in coolness and decrease in dust and running nose in the family.
Just wonder if someone has better technique to wash. Maybe we can exchange notes.

izni.idris
01-02-2009, 10:29 AM
To avoid getting the mess especially the water dripping onto your floor and your wall what you can do is get
1. A large plastic sheet
2. a pail
3. some clothe pegs or croc clips
4. used toothbrush

- Wrap the plastic sheet around the bottom half of the aircond unit
- Clip the plastic sheet with the cloth pegs to secure it
- What you are doing is to create a funnel so the run-off water will collect into the pail
-place the bottom part of the sheet into the pail (most likely you will be on a ladder) so hook the pail onto the ladder.
- then you can spray your air-cond with your detergent and water
- use the toothbrush to gently clean the fins to remove the dust
- don't forget to clean the fan inside

Clean the fins on the external unit too..

There..now you have saved RM50-70.00 no need to ask the air-cond technician to service.

I use a gentle non-corrosive water based cleaner for the fins. I know there is the detergent specifically for air-cond. Where did you buy yours?

Mat Bruce
01-02-2009, 03:35 PM
To avoid getting the mess especially the water dripping onto your floor and your wall what you can do is get
1. A large plastic sheet
2. a pail
3. some clothe pegs or croc clips
4. used toothbrush

- Wrap the plastic sheet around the bottom half of the aircond unit
- Clip the plastic sheet with the cloth pegs to secure it
- What you are doing is to create a funnel so the run-off water will collect into the pail
-place the bottom part of the sheet into the pail (most likely you will be on a ladder) so hook the pail onto the ladder.
- then you can spray your air-cond with your detergent and water
- use the toothbrush to gently clean the fins to remove the dust
- don't forget to clean the fan inside

Clean the fins on the external unit too..

There..now you have saved RM50-70.00 no need to ask the air-cond technician to service.

I use a gentle non-corrosive water based cleaner for the fins. I know there is the detergent specifically for air-cond. Where did you buy yours?

Thanks.
You must use very little water if pail is hooked up to the ladder, how do you wash off the detergent? I use the hose not a spray,so there is a lot of water, thus the mess.
Also do you remove all the plastic covers of the air-con?
How do you protect the electrical parts? My air-con tripped a few times.

Initially used normal detergent for air con plastic covers, for fins, I used a chemical CX488? that I bought from my air-con man for rm10 (600 ml bottle) but can mix to 3 times. It is alkaline and it will foam when spray onto the fins.

Although I switch off everything, my problem is that I always get the electrical wet and the air-con will trip when I finished cleaning so I have to wait a long time for it to dry out.

xt900
01-02-2009, 04:49 PM
Any other places to buy the detergent for air con?

fRaNkY
01-02-2009, 11:53 PM
Did you try to take out the filters from the blower unit? That you can wash, scrub and whatever with the plastic filters.

You can also try vacuum the blower and the outdoor unit.

I wont take in down the outdoor unit as I dont know how to refill the gas..... :)

That will last for another few months.

Does it have to be shiny to get rid of heat? :D

Mat Bruce
02-02-2009, 01:31 AM
Any other places to buy the detergent for air con?

Detergent, you can buy anywhere. If you want to do a chemical wash,you need the chemical. I still have some of my supply if you want try.

Mat Bruce
02-02-2009, 01:54 AM
Did you try to take out the filters from the blower unit? That you can wash, scrub and whatever with the plastic filters.

You can also try vacuum the blower and the outdoor unit.

I wont take in down the outdoor unit as I dont know how to refill the gas..... :)

That will last for another few months.

Does it have to be shiny to get rid of heat? :D

This one,take the outside filters and wash, my maid will do once a month.This is not effective, we are talking about washing the inside of the air-con the fan blower and the fins (dust normally stuck here) and if you wake up with sinus or running nose,this is the problem..
I wash my son's room and his running nose has reduced a lot!
I have done it only once so still learning. I heard that cleaning the fins makes the air-con more efficient.
Either use toothbrush(will take whole day)or just spray chemical on fins, wait 5 mins and wash them off.
I have not try the outdoor unit yet.

bslee
02-02-2009, 10:49 AM
IMO and past experience, dismantling the entire unit for a thorough wash is most effective. 2 main components must be thoroughly cleaned out, which is the fan coil and the blower fan. I've done this for quite a few units (removed from old house) and spent some hours dismantling part by part leaving just the chassis with fan coil, the blower fan assembly ready for mild chemical and pressure wash. All parts including the electricals can be carefully dismantled and put aside. After my thorough wash, the air con can then be re-assembled and reinstalled onto the wall. The air velocity will be as good as new and without unpleasant ordors.
For most people, I reckon you'd have to call a contractor to dismantle and re-charge the refrigerant gas which is going to incur cost. As for me, I'm armed to the teeth with all thats neccessary for DIY. I wish there was a easier method to dismantle air con, but there isn't. Its still a pressureized system anyhow and one need the skill and knowledge for the entire chore.

BTW, speaking about refrigeration equipment, how many of you have dragged out your fridge with a total clean out, hose down the interior and some disinfection?.. Trust me, it can be done and your fridge is a potential home full of bacteria. I do this every 6 months. And my LG fridge have been serving me fine with full efficiency for past 10 years, less the unplesant odors too.

izni.idris
02-02-2009, 02:27 PM
Sorry I forgot to mention you need a spray bottle (preferably the one with the pump - to pump in the pressure) so when you press the trigger the jet of water (or your detergent solution) will clean the fins. You will have more control over the spray. Don't spray into the electrial parts and circuits! If this area is dusty suffice to use a painters brush to dust of the dirt collected there.
And yes, you need to remove the plastic casing to get to the fins and blower.

Talking about the blower fan, I own a 1.5hp Fujiaire air-cond for the master bedroom, I can never be able to dismantle the cyndrical blower fan for a total wash - can't figure out this part.

Another tip - don't forget to clean the drain that removes the condensed water from the fins to the outside tube. If this is blocked with dirt from your cleaning, you will get a dripping air-cond later.

Mat Bruce
02-02-2009, 05:08 PM
IMO and past experience, dismantling the entire unit for a thorough wash is most effective. 2 main components must be thoroughly cleaned out, which is the fan coil and the blower fan. I've done this for quite a few units (removed from old house) and spent some hours dismantling part by part leaving just the chassis with fan coil, the blower fan assembly ready for mild chemical and pressure wash. All parts including the electricals can be carefully dismantled and put aside. After my thorough wash, the air con can then be re-assembled and reinstalled onto the wall. The air velocity will be as good as new and without unpleasant ordors.
For most people, I reckon you'd have to call a contractor to dismantle and re-charge the refrigerant gas which is going to incur cost. As for me, I'm armed to the teeth with all thats neccessary for DIY. I wish there was a easier method to dismantle air con, but there isn't. Its still a pressureized system anyhow and one need the skill and knowledge for the entire chore.

BTW, speaking about refrigeration equipment, how many of you have dragged out your fridge with a total clean out, hose down the interior and some disinfection?.. Trust me, it can be done and your fridge is a potential home full of bacteria. I do this every 6 months. And my LG fridge have been serving me fine with full efficiency for past 10 years, less the unplesant odors too.

Wah! Can teach me or not?

bslee
02-02-2009, 06:29 PM
Talking about the blower fan, I own a 1.5hp Fujiaire air-cond for the master bedroom, I can never be able to dismantle the cyndrical blower fan for a total wash - can't figure out this part.


Its not entirely easy to dismantle the blower fan when its on the wall. Its ideal when the whole indoor unit is out from the wall and put flat on a large table or open air where you can figure out the disassembly part by part. Its usual that the main cover comes off. Remove the electrical cover plates (if any), look for locking screws to remove the electronic components one by one and careful not to break any snap in plastic housings. Once the electrical section is removed where it exposes the blower motor. The blower is coupled to the motor by a bolted coupling with a bolt on the inside of the blower and accessed through a "missing fin" or access hole. The fan coil have to be removed on the left side for clearance for blower removal. Yes, its quite mechanical all the way and when re-installing, allow some play at both sides so when it spins, there shouldnt be noiseless and free spinnning.
I think most split units regardless of brand are more or less the same architecture for dismantling and re-assembly. Its not rocket science.
The electronics MUST be removed completely with note taken on all the wiring routing and PCB connectors. My Panasonic is quite easy as its all connector color coded. Its the housing screws that can be hidden deep in the chassis that makes you do some thinking. Take your time. All can be done as if it was assembled by humans, surely another human can disassemble it all.
There you have it.. more or less like that. For me, I'll pay the contractor to remove (only bedroom one), then I wash it up myself, and they can re-install to the wall. Why?.. I don't have a 24ft ladder to scale the outside wall to disconnect the refrigerant piping. Vacuum pump, manifold gauge and refrigerant gas?..I got of course.
So..DIY or call contractor?..


Wah! Can teach me or not?
Teach what?..washing the fridge or dismantling the aircon?

Mat Bruce
02-02-2009, 06:37 PM
I meant the air-con. I am trying to wash it without removing it from the wall, I bought some gardening connections and some PVC pipes to wash the blower fan (intend to do it every 3 mths). The fins , can do once a year.
So I am still at design stage. The blower fan is the one the accumulates the most dust and also the water pan. Better still , if can train my maid to do it. :)

bslee
02-02-2009, 06:47 PM
So I am still at design stage. The blower fan is the one the accumulates the most dust and also the water pan. Better still , if can train my maid to do it. :)
Did you read what whats involved in removing the blower?. Cleaning the blower in situ may only be up to 70% or less. Most dirt is trapped underneath the blower fins and only a strong jet of water can remove most of it. That you can best do with the blower in your bath or outside. Dirt trapped at the fins blunt the fins and the air flow efficiency drops like a stone. Can help it..we live in very dusty condition.

xt900
04-02-2009, 05:31 PM
Detergent, you can buy anywhere. If you want to do a chemical wash,you need the chemical. I still have some of my supply if you want try.

Hi Mat, is the chemical harmful if touched? Any precautious required? Can the chemical clear away the dust?

xt900
04-02-2009, 05:32 PM
Sorry I forgot to mention you need a spray bottle (preferably the one with the pump - to pump in the pressure) so when you press the trigger the jet of water (or your detergent solution) will clean the fins. You will have more control over the spray. Don't spray into the electrial parts and circuits! If this area is dusty suffice to use a painters brush to dust of the dirt collected there.
And yes, you need to remove the plastic casing to get to the fins and blower.

Talking about the blower fan, I own a 1.5hp Fujiaire air-cond for the master bedroom, I can never be able to dismantle the cyndrical blower fan for a total wash - can't figure out this part.

Another tip - don't forget to clean the drain that removes the condensed water from the fins to the outside tube. If this is blocked with dirt from your cleaning, you will get a dripping air-cond later.

How to clean the drain? Need to remove the whole indoor unit cover right?

xt900
04-02-2009, 05:33 PM
Had anyone tried those air con spray sold at ACE Hardware? It comes in 2 bottle package, cost around RM30++. White bottle with green wording.

Mat Bruce
04-02-2009, 08:39 PM
Hi Mat, is the chemical harmful if touched? Any precautious required? Can the chemical clear away the dust?

Yes, chemical is alkaline, it can sting. You need to wash with water if you touch.
After you spray the chemical into the fins, it reacts with the aluminium fins,the foams will form bringing the dust on top of it. You can see black patterns on the white foams, these are the dust inside the fins floating to the top.Some people use a toothbrush to slowly clean the fins. You need good patience, a strong neck and mechanical arms :)

Mat Bruce
04-02-2009, 08:44 PM
Had anyone tried those air con spray sold at ACE Hardware? It comes in 2 bottle package, cost around RM30++. White bottle with green wording.

Yes, seen that around, never tried that.

fRaNkY
05-02-2009, 08:17 AM
... if you wake up with sinus or running nose,this is the problem..
I wash my son's room and his running nose has reduced a lot!...

Tried putting in a Salt Lamp in the room? Ionizing the room.... Escalator down from Cold Storage, there is a shop.... :)

bslee
05-02-2009, 10:03 AM
Nothing beats taking down the fan coil and having it water pressure blasted to remove nearly all the dirt in the coil. I don't have much faith in those spray can solutions.
BTW, when I say water pressure washed, your pump nozzle better be suited to a fan shape jet spray. A sharp water jet will damage the coil fins.

Mat Bruce
06-02-2009, 12:00 PM
Nothing beats taking down the fan coil and having it water pressure blasted to remove nearly all the dirt in the coil. I don't have much faith in those spray can solutions.
BTW, when I say water pressure washed, your pump nozzle better be suited to a fan shape jet spray. A sharp water jet will damage the coil fins.

how long to take it down, dismantle, re-install? for the inner unit? I am afraid that I will break the plastic as I do not know how.

bslee
06-02-2009, 03:53 PM
What brand and model air con? there's usually a label on one of the sides showing the details.

Mat Bruce
06-02-2009, 09:56 PM
Hi Mat, is the chemical harmful if touched? Any precautious required? Can the chemical clear away the dust?

Yes, it foams after five minutes and you can sse the dirt on top of the bubbles. Try not to contact with the skin, it stings so must wash off. Wearing gloves will help.

xt900
08-02-2009, 09:05 AM
Yes, it foams after five minutes and you can sse the dirt on top of the bubbles. Try not to contact with the skin, it stings so must wash off. Wearing gloves will help.

Hi Mat, another question. Will the chemical react with the plastic cover (indoor unit cover)? Do you have any idea to clean the blower area without dismantling the unit cover? Can we spray the chemical directly into the blower area?

Mat Bruce
08-02-2009, 11:54 PM
Hi Mat, another question. Will the chemical react with the plastic cover (indoor unit cover)? Do you have any idea to clean the blower area without dismantling the unit cover? Can we spray the chemical directly into the blower area?

good question, I did not try that, I spray on fins only. I suppose you shoud not because it is a strong alkaline. For blower, I used a mr muscle detergent with orange acid (those you use to wipe oven or fridge.). I normally try to dismantle plastic cover,so that you get easier access to the blower. Where I can't , I just spray without dismantling (not so clean).

Mat Bruce
10-02-2009, 12:08 AM
Washed my daughter room air-con today using a hose and paint brush for the blower fan. Made a mess because the fan is very inaccessible.

I am sure that I can get my water pressure gun into the fan blower and blow away in intermittent bust to get the dust in the blower fan. Anyone tried this? Will it bend the blower fan?

Good thing is that I am saving heaps with diy.

xt900
10-02-2009, 03:56 PM
I guess it is best to dismantle the indoor cover to clean it properly. Will try that and inform the output here.

Went to Ace hardware at pyramid yesterday. Bought a bottle of air-con foil cleaning solution at RM30++.

xt900
23-02-2009, 10:54 AM
Done cleaning 3 units of aircon in my house on Sunday. The chemical smell was terrible despite I already had a face mask put on. (any recommendation what type of face mask to use and where to buy?) I use the pressurize spray to clean the blower area and rinse off the fin area. Overall output, it is now more cooling and I only need to use low fan power rather than medium before I clean.

I still think it is best to hire those professional to clean your aircon at least once 1 year. Our efficiency of our cleaning method maybe only about 50%.

VeeJay
23-02-2009, 12:50 PM
As far as for the split unit indoor (blower), its pretty easy to clean 100%, I dont think you need a contractor, but the external compressor cleaning would need a contractor since you need to pump the gas after cleaning...

xt900 you said that you used a pressure gun (water gun?) did you dismantle the the whole blower unit to the ground and sprayed, I presume? Else your walk would be messy.

Normally I dont dismantle the unit, just dismantle the plastic covers around to a bare unit, and dismantle the roller fan as well, for a wash.

As for the fin, I use a normal brush (hmmm...wondering how to describe it...its made of some lidi, probably palm), its easier to clean along the fin gaps, and at time i do use tooth brush as well.

Normally I will wet the brush and clean them...I have tried cleaning with a dry bursh as well, but didnt find it to be very effective, but I have some aircon contractor do it dry.

My cleaning is about every 3-4 months once.

xt900
23-02-2009, 01:18 PM
Hi Veejay, I only use those those bottle water spray, but manually pump to make it pressurize. Usually people use it for watering plants. Bought it from ACE hardware as well. I tried to dismantle the blower area, but afraid might not be able to hook it back..so only clean it with water spray. My cleaning is 2 months once, same time I clean the ceiling fan. So, a lot of stairs climbing and at the end of the day, really exausted. Good exercise though. :rolleyes:

Any forumer know the good contact and price for aircon cleaning?

VeeJay
23-02-2009, 02:20 PM
There had been many past discussion on air con servicing...you could google for it in usj forum...one of it is

http://www.usj.com.my/bulletin/upload/showthread.php?t=11823

Even, if you dont know how to dismantle, you could still do a good job on cleaning, by just removing the top plastic cover, (if i'm not mistaken only about 3 screws to open), then you could use the brush to clean....normally if you just spray on, some waxy dirt would start to block the air flow and in retirn...your aircon would not be blowing well or freeze inside...resulting in 'not so cold'

bslee
23-02-2009, 05:37 PM
I'm still in the opinion that dismantling the whole unit is best solution to thorough wash and the fan coil really need a chemical solution to dissolve or loosen out the fan coil dirt that naturally adhere deep into the fins. After 5-8 washes, time to replace the whole air con, moreover if its like 1hp air con which is RM1k more or less. RM 1k investment for 8 years..sounds not too bad.

xt900
24-02-2009, 10:32 AM
I think the cleaning part shouldn't be any problem. Next is I need a long container to be locate under the aircon so that during spraying water into blower, water wont just spill on the floor. Currently, I am just laying cloths across my floor during cleaning. Quite messy...Any suggestions from others?

bslee
24-02-2009, 11:50 AM
Quite messy...Any suggestions from others?
I'll be worse if you happen to have wood parquet or timber flooring below the air con. It'll not take lightly to the dirty or chemical content water dripping from the air con. I thought of fabricating sort of a long collection tray made from plastic rain gutter drain and can be hung just below the air con and with a drain outlet with a long hose to the bathroom to drain the water. Actually can DIY the thing lah, come to think of it.

xt900
24-02-2009, 05:33 PM
I'll be worse if you happen to have wood parquet or timber flooring below the air con. It'll not take lightly to the dirty or chemical content water dripping from the air con. I thought of fabricating sort of a long collection tray made from plastic rain gutter drain and can be hung just below the air con and with a drain outlet with a long hose to the bathroom to drain the water. Actually can DIY the thing lah, come to think of it.

Do you know where to buy the plastic rain gutter drain? I just need to know where to buy, DIY is not a problem... :D

bslee
24-02-2009, 10:36 PM
There's a hardware shop at USJ 8 facing the USJ bomba quarters USJ 8 Polis. (back row) Hong Lek Hardware. Price is very fair..no cheating and I get nearly all my hardware bits from there.
My buddy and I bought 2 lengths of rain gutter recently with all the fittings to DIY install a gutter at the side of porch. Total cost, less than RM100 for 4m length and all necessary fittings.
Do ask for the side covers and PVC glue as you'd need it to cover the sides and seal it.

xt900
25-02-2009, 10:19 AM
Thank you very much. Will check it out this weekend.

bslee
25-02-2009, 01:01 PM
Thank you very much. Will check it out this weekend.

Let me know if you've been successful on constructing one.

Mat Bruce
26-02-2009, 11:56 PM
As far as for the split unit indoor (blower), its pretty easy to clean 100%, I dont think you need a contractor, but the external compressor cleaning would need a contractor since you need to pump the gas after cleaning...

xt900 you said that you used a pressure gun (water gun?) did you dismantle the the whole blower unit to the ground and sprayed, I presume? Else your walk would be messy.

Normally I dont dismantle the unit, just dismantle the plastic covers around to a bare unit, and dismantle the roller fan as well, for a wash.

As for the fin, I use a normal brush (hmmm...wondering how to describe it...its made of some lidi, probably palm), its easier to clean along the fin gaps, and at time i do use tooth brush as well.

Normally I will wet the brush and clean them...I have tried cleaning with a dry bursh as well, but didnt find it to be very effective, but I have some aircon contractor do it dry.

My cleaning is about every 3-4 months once.

How do you remove the blower fan, very difficult. Can describe ?
I used chemicals on the foil, it is a 5 mins job, just rinse after the foam push the dirt out. No patience for brush.
Chemical wash, I think it improve a lot, for me

Mat Bruce
26-02-2009, 11:58 PM
I'll be worse if you happen to have wood parquet or timber flooring below the air con. It'll not take lightly to the dirty or chemical content water dripping from the air con. I thought of fabricating sort of a long collection tray made from plastic rain gutter drain and can be hung just below the air con and with a drain outlet with a long hose to the bathroom to drain the water. Actually can DIY the thing lah, come to think of it.

I was thinking of the same thing, cannot be too hard.

VeeJay
27-02-2009, 10:23 AM
Mat Bruce,

I normally dont bring down the whole unit, constant maintenance (Cleaning) has prevented me to bring it down. I only bring it down 1.5 - 2 years once.

But every 4th month I do my cleaning while the unit attached on the wall, but i do remove the roller (blower fan).

In order to bring it down, all you need to do is to pull out the pin stopper which is on the hinge hole and then tilt a little the plastic cover (not too hard though, then the planstic cover might break or crack), pull out the roller....thats all...and the same way to get it in.

Obviously, you need to open the front cover of the aircon and the tilting fin (vent) as well, before you could get your hand on the roller.