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Air conditioning - Any recommendations please??

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Old 19-02-2014, 09:31 AM   #4171
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I got the Mitsubishi Heavy Industry, exactly 5 years of usage. I never go for any services before since the last installation, as I will just DIY myself on: cleaning of the filter and the blower.

I do that in every 3-4 months but until recently noticed after the cleaning of the blower, the air blow wasn't cool enough at the night. Not sure what's the problem causing this, I would said my air-con is still functioning well w/o any leakage or break down. Any one facing the similar problem before?
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Old 19-02-2014, 11:22 AM   #4172
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Hello Luei74,

Good job on doing your own upkeep.

Based on description it seems that either your unit is lacking in gas or the coils are dirty.

Is the air emitted as strong as previous when the unit was cold?
If the air is as still strong as previous, chances are your unit might be lacking in gas.

Otherwise if the strength of the air emitted is reduced, chances are the coil is dirty. For Mitsubishi Heavy Industry, the unit has a V-Coil which cannot be reached unless the unit is dismantled hence even with the regular upkeep of filter and blower, the coils will eventually get dirty and affect the cooling efficiency.

You might want have your contractor do a check on this to confirm.


Best Regards,

Jason Tham


I got the Mitsubishi Heavy Industry, exactly 5 years of usage. I never go for any services before since the last installation, as I will just DIY myself on: cleaning of the filter and the blower.

I do that in every 3-4 months but until recently noticed after the cleaning of the blower, the air blow wasn't cool enough at the night. Not sure what's the problem causing this, I would said my air-con is still functioning well w/o any leakage or break down. Any one facing the similar problem before?

Last edited by maxicoolservices; 19-02-2014 at 11:26 AM..
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Old 19-02-2014, 01:48 PM   #4173
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My setting was at "Med" all the while and the room will be cool down within the 10 mins. Last night setting at "Auto and Hi", the air emitted still as strong as previously, only the air was not cool enough and the room was unable to cool down even after 1 hr. I will try to monitor the situation tonight. If I would like to do the checking and top up for the gas, how much will be the current market rate?

Hello Luei74,

Good job on doing your own upkeep.

Based on description it seems that either your unit is lacking in gas or the coils are dirty.

Is the air emitted as strong as previous when the unit was cold?
If the air is as still strong as previous, chances are your unit might be lacking in gas.

Otherwise if the strength of the air emitted is reduced, chances are the coil is dirty. For Mitsubishi Heavy Industry, the unit has a V-Coil which cannot be reached unless the unit is dismantled hence even with the regular upkeep of filter and blower, the coils will eventually get dirty and affect the cooling efficiency.

You might want have your contractor do a check on this to confirm.


Best Regards,

Jason Tham
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Old 19-02-2014, 02:51 PM   #4174
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Hello Luei74,

Let me drop you a pm on this.

Best Regards,

Jason Tham

My setting was at "Med" all the while and the room will be cool down within the 10 mins. Last night setting at "Auto and Hi", the air emitted still as strong as previously, only the air was not cool enough and the room was unable to cool down even after 1 hr. I will try to monitor the situation tonight. If I would like to do the checking and top up for the gas, how much will be the current market rate?
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Old 19-02-2014, 03:09 PM   #4175
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To kityip,

Then this price is reasonable.
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Old 19-02-2014, 05:53 PM   #4176
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Just brought Midea sys 2, hopefully it will be gd. Installing either this wkend or next week.
Dear Sir,

May I know so far how is your Midea System 2. I think of buying too.
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Old 19-02-2014, 08:38 PM   #4177
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To kityip,

Then this price is reasonable.
Hi terumo,

Hong Tar, Gain City and All Best quoted me around this price, ranging from 3120 to 3280.

But workmanship can't decide which one to choose. Cause I first time going for multi split system.
Any recommendation ?

Armaflex class 1 and class 0, which one is better or used ?

Is it worth to upgrade to 1/2" Armaflex and G22 copper pipe @ $180 ?

Thank you.

Last edited by kityip; 20-02-2014 at 07:21 AM..
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Old 20-02-2014, 10:07 AM   #4178
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To kityip,

Class 1 & 0, I feel that class 1 is good enough.
Upgrade of piping will depends on your pipe routing (as it, is it hidden in some warerobe or false ceiling)

Recommendations, i will PM u.
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Old 20-02-2014, 11:54 AM   #4179
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Wink air con

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Old 20-02-2014, 08:46 PM   #4180
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Terumo,

Thank you. 😊
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Old 21-02-2014, 12:28 PM   #4181
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Midea System 4

Dear Sir,

May I know so far how is your Midea System 2. I think of buying too.
Hi, just to share. I bought Midea system 4, breakdown 4 times due to wire break, as they using a lower grade wiring. Agent service was very bad.
My advise is purchase extended warranty if you are going for Midea, or go for another brand.
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Old 23-02-2014, 01:00 AM   #4182
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Smile Midea system 2 invertor

Hi all,

I intend to install Midea system 2 M30A21CDN1QC4 bought from Gaincity. Due to budget constraint, I decided to bet on it. Any one out there have ever installed this model and care to share your experiences. Appreciated!!
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Old 23-02-2014, 01:04 AM   #4183
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Care to review on your Midea System 2? I am installing one soon. Appreciate. Thx.
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Old 23-02-2014, 08:56 AM   #4184
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Is it ok, to install the indoor unit above bedroom doors ?

Thank you.
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Old 23-02-2014, 07:28 PM   #4185
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Hi guys,

i got my air con installed by THL air-con about 4 months ago.

the pvc casing where the aircon piping is sometime leak for a less then 20sec then stop (aircon not switch on for at least 10hrs and it about 1 meter away from the air con) for the 3 times i notice it when i was at home, it happen randomly. the other time i not at home but i know it leak as i notice water mark
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