HWZ Forums

Login Register FAQ Mark Forums Read

Air conditioning - Any recommendations please??

Like Tree884Likes
Closed Thread
 
LinkBack Thread Tools
Old 04-01-2017, 03:32 PM   #9181
Senior Member
 
Join Date: Jan 2000
Posts: 604
Talking

Thanks for your reply!

so you mean it doesn't matter of the aircon BTU level (9k & 12k), is depend on time & space usage right? in another way is mean the electric will consume same power no matter we use 9k or 12k for the same room, am i right?
Besides power, time and usage, we need to look at the size of the room. A higher BTU will definitely use more energy (with higher power rating) and cool the room faster (shorter time) but if it is a small room, a 9000 BTU will suffice. But according to some here, when you use a higher BTU for a small room, the room cools faster but there will be humidity problems.

Do reach the pages before this. You can calculate the volume of your room and hence the cooling power required. For me I read through over 600 pages to get as much info to help make an informed choice. To help you narrow down, read from 2016 Jan onwards. Disregard negative posters with one or two postings (I see you just registered) and as with everything, check out the information. This is not gospel truth! Hope this helps!
mlangelo is offline  
Old 04-01-2017, 03:36 PM   #9182
Senior Member
 
Join Date: Jan 2000
Posts: 604
By the way, the technicians have left and I am cleaning up the place. They took care not to let the dust go all over the place and I am happy with their workmanship. They had to drill through the walls for the pipes to go through. Tested all and everything is ok. Hope this lasts..
By the way, the boss has not collected a single cent from me yet! He says to check everything and then pay.
mlangelo is offline  
Old 04-01-2017, 03:40 PM   #9183
Junior Member
 
Join Date: Jan 2017
Posts: 3
Besides power, time and usage, we need to look at the size of the room. A higher BTU will definitely use more energy (with higher power rating) and cool the room faster (shorter time) but if it is a small room, a 9000 BTU will suffice. But according to some here, when you use a higher BTU for a small room, the room cools faster but there will be humidity problems.

Do reach the pages before this. You can calculate the volume of your room and hence the cooling power required. For me I read through over 600 pages to get as much info to help make an informed choice. To help you narrow down, read from 2016 Jan onwards. Disregard negative posters with one or two postings (I see you just registered) and as with everything, check out the information. This is not gospel truth! Hope this helps!
Hi Mlangelo,

Noted and Thanks for your advice
will try to look back the previous post and thanks!!
mlangelo likes this.
koalabears is offline  
Old 04-01-2017, 04:07 PM   #9184
Senior Member
 
Join Date: Jan 2000
Posts: 604
Hi Mlangelo,

Noted and Thanks for your advice
will try to look back the previous post and thanks!!
You are welcome! I am just paying back for the good advice I get from this thread. By the way I almost got from Best Tech. Good pricing and nice salesman from IMM. Went to one at East Coast too but the saleman from IMM is a nice old gentleman and I would have gotten this from him if not for the negative feedback on facebook about their service. He is my next alternative.
What we face is this :
At shop :buy from a nice gentleman or pretty saleswoman who assures you everything,
Real situation : the installation team comes and says..for this you must pay $$$, and so forth or this cannot be done etc.

So before you get your stuff, ask them to write down everything in black and white so that there is no room for argument.

Always good to do your research. I prefer a small closely knit team run by a responsible boss than one that outsources work to others..
goh6570 and koalabears like this.
mlangelo is offline  
Old 05-01-2017, 12:58 AM   #9185
Junior Member
 
Join Date: Mar 2013
Posts: 18
Hi,

You can sign up for free at: https://imageshack.com/signup to paste your photo and post the link in this forum.

https://imageshack.com/i/plPe20Zoj

My plan

Living Room aircon above the entrance door beam - pipe trunking from TOP to kitchen down straight to yard then to ledge

MBR aircon above toilet door - pipe trunking all inside MBR false ceiling out to ledge

Bedroom 2 above door - pipe trunking TOP to the walkway beam to common toilet false ceiling then to MBR false ceiling to yard then to ledge

Bedroom 3 above door - pipe trunking TOP to the walkway beam to kitchen TOP then down to bottom straight to yard then to ledge

Thank you

Last edited by Mannequin Yeo; 05-01-2017 at 08:15 AM..
Mannequin Yeo is offline  
Old 05-01-2017, 08:03 AM   #9186
Member
 
Join Date: Nov 2016
Posts: 212
https://imageshack.com/my/images

My plan

Living Room aircon above the entrance door beam - pipe trunking from TOP to kitchen down straight to yard then to ledge

MBR aircon above toilet door - pipe trunking all inside MBR false ceiling out to ledge

Bedroom 2 above door - pipe trunking TOP to the walkway beam to common toilet false ceiling then to MBR false ceiling to yard then to ledge

Bedroom 3 above door - pipe trunking TOP to the walkway beam to kitchen TOP then down to bottom straight to yard then to ledge

Thank you
Hi, your image cannot be opened. Pls provide the link again.
dachee is offline  
Old 05-01-2017, 08:12 AM   #9187
Junior Member
 
Join Date: Mar 2013
Posts: 18
Hi, your image cannot be opened. Pls provide the link again.
https://imageshack.com/i/plPe20Zoj

Last edited by Mannequin Yeo; 05-01-2017 at 08:15 AM..
Mannequin Yeo is offline  
Old 05-01-2017, 12:15 PM   #9188
Master Member
 
jason910's Avatar
 
Join Date: Jan 2002
Posts: 4,691
I spoke to the Mitsubishi HQ mgr on the 5 ticks aircon units, he told me that the compressor will be nosier then the other 2 ticks models. He does have users complaining to him about these. Town councils was informed also they had to go down and use those noise protective sheets to cover the compressors to minimise the noise that their neighbours complained about.

Any users can feedback on their 5 ticks aircon compressor?
goh6570 likes this.
__________________
[SIZE=1]Eric[/SIZE]
jason910 is offline  
Old 05-01-2017, 02:47 PM   #9189
Junior Member
 
Join Date: Sep 2015
Posts: 87
I spoke to the Mitsubishi HQ mgr on the 5 ticks aircon units, he told me that the compressor will be nosier then the other 2 ticks models. He does have users complaining to him about these. Town councils was informed also they had to go down and use those noise protective sheets to cover the compressors to minimise the noise that their neighbours complained about.

Any users can feedback on their 5 ticks aircon compressor?
my post #6762 ;

"I have just installed a new starmex 5 tick system 3 last month (Dec 2015). As the compressor is just outside my master room, I can indeed hear very loud noise coming from the trunking inside my room that was just connected to the compressor outside on the aircon ledge especially if all 3 blower are running (3 blowers running at minimum fan speed and set at 25 deg C.) If the blower is running at max fan speed, the noise at the trunking near the compressor is really very loud.
However, the noise is not so loud if only 1 blower is running but still can be heard in the middle of the night when the surroundings is very quiet.

As we only switch on the aircon during hotter days/nights and it is more energy efficient, I just have to live with the noise.

My system is MXY3G28VA compressor + MSXYFJ10VE blower (x 3 units)"

I have requested Gain City technician to take a look at the noise issue, the installer came and show me the catalogue saying that the noise level for 5 tick is higher that 2 tick models and there is nothing that they can do unless I allow them to lower the amp capacity of the compressor which in turn make the compressor not so noisy but at the same time will not be so cold. I rejected the suggestion and request them to feedback / highlight to Mitsibishi Electric Singapore on this issue.
goh6570 likes this.
Neverland99 is offline  
Old 05-01-2017, 03:39 PM   #9190
Master Member
 
jason910's Avatar
 
Join Date: Jan 2002
Posts: 4,691
thanks looks like i will have to skip the 5 ticks models.


my post #6762 ;

"I have just installed a new starmex 5 tick system 3 last month (Dec 2015). As the compressor is just outside my master room, I can indeed hear very loud noise coming from the trunking inside my room that was just connected to the compressor outside on the aircon ledge especially if all 3 blower are running (3 blowers running at minimum fan speed and set at 25 deg C.) If the blower is running at max fan speed, the noise at the trunking near the compressor is really very loud.
However, the noise is not so loud if only 1 blower is running but still can be heard in the middle of the night when the surroundings is very quiet.

As we only switch on the aircon during hotter days/nights and it is more energy efficient, I just have to live with the noise.

My system is MXY3G28VA compressor + MSXYFJ10VE blower (x 3 units)"

I have requested Gain City technician to take a look at the noise issue, the installer came and show me the catalogue saying that the noise level for 5 tick is higher that 2 tick models and there is nothing that they can do unless I allow them to lower the amp capacity of the compressor which in turn make the compressor not so noisy but at the same time will not be so cold. I rejected the suggestion and request them to feedback / highlight to Mitsibishi Electric Singapore on this issue.
__________________
[SIZE=1]Eric[/SIZE]
jason910 is offline  
Old 05-01-2017, 06:46 PM   #9191
Member
 
Join Date: Nov 2016
Posts: 212
my post #6762 ;

"I have just installed a new starmex 5 tick system 3 last month (Dec 2015). As the compressor is just outside my master room, I can indeed hear very loud noise coming from the trunking inside my room that was just connected to the compressor outside on the aircon ledge especially if all 3 blower are running (3 blowers running at minimum fan speed and set at 25 deg C.) If the blower is running at max fan speed, the noise at the trunking near the compressor is really very loud.
However, the noise is not so loud if only 1 blower is running but still can be heard in the middle of the night when the surroundings is very quiet.

As we only switch on the aircon during hotter days/nights and it is more energy efficient, I just have to live with the noise.

My system is MXY3G28VA compressor + MSXYFJ10VE blower (x 3 units)"

I have requested Gain City technician to take a look at the noise issue, the installer came and show me the catalogue saying that the noise level for 5 tick is higher that 2 tick models and there is nothing that they can do unless I allow them to lower the amp capacity of the compressor which in turn make the compressor not so noisy but at the same time will not be so cold. I rejected the suggestion and request them to feedback / highlight to Mitsibishi Electric Singapore on this issue.

Hi, Can you differentiate the noise at the condenser? Like is it fan noise, compressor noise, vibrating noise, noise coming from condenser or trucking, gas leaking sound?

You may wish to download from Play Store a dB level meter application into your hand phone and check the level of the sound. If it is above the product specification, Mitsubishi Electric may have to change the unit for you free of charge.

However, noise could also be due to vibration from piping. In that case, the installer would have to rectify it.

Good to get both of them to inspect the problem at together so that your problem can be resolved and not going round the bush.

The above are my opinion and hope that they are helpful.
dachee is offline  
Old 06-01-2017, 11:38 AM   #9192
Junior Member
 
Join Date: Sep 2015
Posts: 87
Hi, Can you differentiate the noise at the condenser? Like is it fan noise, compressor noise, vibrating noise, noise coming from condenser or trucking, gas leaking sound?

You may wish to download from Play Store a dB level meter application into your hand phone and check the level of the sound. If it is above the product specification, Mitsubishi Electric may have to change the unit for you free of charge.

However, noise could also be due to vibration from piping. In that case, the installer would have to rectify it.

Good to get both of them to inspect the problem at together so that your problem can be resolved and not going round the bush.

The above are my opinion and hope that they are helpful.
Based on ME catalogue, 2 tick system 3 outdoor compressor noise level is 49 DB(A) while the 5 tick system 3 outdoor compressor noise level is 56 DB(A).





This is a good comparison on the noise level that you will hear ; https://www.youtube.com/watch?gl=SG&...&v=v65dR-ZV5D0

Cheers !
Neverland99 is offline  
Old 06-01-2017, 03:09 PM   #9193
Member
 
Join Date: Nov 2016
Posts: 212
Based on ME catalogue, 2 tick system 3 outdoor compressor noise level is 49 DB(A) while the 5 tick system 3 outdoor compressor noise level is 56 DB(A).





This is a good comparison on the noise level that you will hear ; https://www.youtube.com/watch?gl=SG&...&v=v65dR-ZV5D0

Cheers !
Hi,

In this case, there is a noise level issue which can be contributed by the following:

1. The sound level of the air conditioner system
2. The sound level from the air conditioner piping (vibration).
3. The sound level from the combination of both the air conditioner and the piping.
4. The sound level from the air conditioner mounting bracket (if used)
5. The perceived loudness by the person hearing the sound.

Focusing only on the air conditioner, the 5 ticks is having condenser sound level of 56dB as specified. Though it is louder than the 2 ticks, it does not mean that it is a noisy equipment.

On this, is 56 dB consider as loud? How loud in normal situation is 56 dB? Is this loudness out of the normal experience that would annoy someone?

Well, according to the chart below, 56 dB is as loud or as soft as during a normal conversation. Is this too loud? Will it annoy someone?

http://www.noisehelp.com/noise-level-chart.html

http://chchearing.org/noise/common-e...-noise-levels/

Well, I think it is unlikely that someone will be annoyed by such sound level. 56 db is around our conversational speech of 60 dB.

Readers can download a dB meter application from Playstore and you will released that 56 dB is really not loud at all. (Note: I am aware that the dB meter that is download from Playstore is not calibrated. It is only used for comparison).

So if your condenser is creating noise that affect your neighbours, then it will be good to check whether it is meeting its specification or not.

Maybe you are having a defective product right from the start. Good to resolve this problem before it becomes a major defective with expensive repair cost after the warranty. Covering the condenser with a acoustic material is not solving the problem. It does not make the defective product meet its specification.

By the way, the video attached in your message is from a 40kVA genset (generator of 32kW). It is difficult to confirm that the sound that is from the video is the same loudness as shown on the dB meter, as there are other sounds, such as environmental sounds and also the video mic level setting (not the dB meter setting) and also my computer speaker setting.

The above are my opinion and hope that they are helpful.

Last edited by dachee; 06-01-2017 at 03:21 PM..
dachee is offline  
Old 06-01-2017, 03:22 PM   #9194
Member
 
Join Date: Sep 2007
Posts: 173
I chose the MHI because my rooms have higher than normal ceilings so I was afraid that the 9000 BTU might not be strong enough.
Energy consumed is calculated by the power rating x time used, so the more power and longer time will cost more. Read a few pages back on how rapid cooling might not be good for a small room if the humidity level is not lowered.
I went to Gain City, Best Tech, Electric, Harvey Norman, DIY at joo seng but so far I prefer the service provided by Supreme. Right now they are just about finishing the installation.
i installed a mhi 3 system with newway abt a year back and everything is working perfectly fine. it was a good recommendation and i am satisfied with the brand so far.

thats right bro. service is so impt. my aunt was left hanging when her new aircons are not working. called her contractor but nobody came. i recommended newway to her and they found some gas leak on one of the connection. even fixed it up for her without extra charge.

bottom line.. do your research and find a reliable company u can trust before you regret it..
eisrad_11 is offline  
Old 06-01-2017, 04:12 PM   #9195
Member
 
Join Date: Oct 2000
Posts: 236
Dear ALL,

Beware of SELF advertising on MHI air con ( Mitshubishi Heavy Industrial),

Below is my personal experience with MHI air con

I have a system 4 MHI using for 3.5 years. Now having problems cannot turn on, lights on the fan coil have orange blink four times follow by lights in green & orange blink 4 times and this repeat itself again and again.
Have 4 contractors to check and everyone told me a different faults
First one told me gas NOT enough, very confident. After refilling gas, problems still exists
Second one told me gas value cannot open fully, after changing, problems still exists
Third one told me Thermostat spoilt, after changing, problems still exists
Four one ( also the SOLE AGENT told me the dirt inside the gas pipe that block the gas flow fully, Charge me $80 SDG for troubleshooting ONLY. NOT repair done, if repair, this $80 cannot take into account.
Very bad experience.
Please do not buy Mitsubishi Heavy Industries air con for this model. SOLE AGENT office very PROUD guy.
This is the model, PLEASE DO NOT BUY THIS MODEL, only last 3.5 years
SCM80ZJ-S ( compressor )
SRK60ZJ-S ( fan coil )
SRK35ZJ-S ( fan coil )
SRK25ZJ-S ( fan coil )
SRK25ZJ-S ( fan coil )
PLEASE DO NOT BUY, bad after sales support from their SOLE AGENT. Very PROUD PROUD attuide.
gdproit_tiorp is offline  
Closed Thread
Important Forum Advisory Note
This forum is moderated by volunteer moderators who will react only to members' feedback on posts. Moderators are not employees or representatives of HWZ. Forum members and moderators are responsible for their own posts.

Please refer to our Terms of Service for more information.


Thread Tools

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On