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 Aircon Discussion V3, Home Appliance

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ozak
post Dec 30 2017, 01:35 PM

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QUOTE(PJusa @ Dec 30 2017, 12:57 PM)
Need to replace my aged insulation foam. Where do you guys get a good one in KL/PJ?
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Oops, you remember me that I have to change the outdoor insulation also. Been expose to uv long and get brittle now.

Can get it from aircon part supplier. Brand superlong.
ozak
post Jan 13 2018, 09:09 AM

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QUOTE(zeefri @ Jan 4 2018, 02:23 PM)
Idk if anybody already asked the same question but I have to wonder whether it consumes lots of electricity when we put AC on standby? Because I already set the ON timer and OFF timer settings so I rarely touched the remote control let alone turn off the main switch.

What do you guys think?
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It will consume some energy. Depend the maker. You can find out this information in the manual.

Some as high as 1 light bulb wattage.
ozak
post Feb 6 2018, 09:46 AM

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QUOTE(ran_deep @ Feb 5 2018, 04:49 PM)
I contacted one supplier, and they said the R32 gas models are latest and much more saving. The gas is also cheaper than R410A.

But when I contacted my usual technician, he claims not many use R32 hence its much more expensive.

Also the same piping (0.6mm) is applicable to R32A rite?
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Why are you so concern about this gas ?
ozak
post Mar 9 2018, 11:21 AM

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QUOTE(alexander3133 @ Mar 8 2018, 10:40 PM)
Aircond list based on power consumption.

Onedrive link, excel spreadsheet:
https://1drv.ms/x/s!AtoOl-yLHwuzjBJsjBkuUVtv3vNB

What was changed from previous
=====================
- Updated reference price for all airconds.
- Added Gree airconds
- Added Haier new models
- Added Hitachi new models
- Added LG new models
- Added Samsung new model

Disclaimer: All data is harvested from respective manufacturers website, I am not responsible for any information accuracy in the spreadsheet provided.

Cheapest 1.0HP Non-Inverter: Gree GWC09QB @ RM 588.44
Cheapest 1.0HP Inverter: Sharp AHX9UED @ RM 937.48
Cheapest 1.5HP Non-Inverter: Midea MSK3-12CRN1 @ RM 816.00
Cheapest 1.5HP Inverter: Hisense HAC-13TGI @ RM 1,197.00
Cheapest 2.0HP Non-Inverter: Hisense HAC-18DJN @ RM 1,376.00
Cheapest 2.0HP Inverter: Hisense HAC-20TGI @ RM 1,869.04
Cheapest 2.5HP Non-Inverter: Hisense HAC-24DJN @ RM 1,588.00
Cheapest 2.5HP Inverter: Haier HSU-25VNH16 @ RM 2,196.96
[attachmentid=9643787]
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Wow, this is pretty good information.
ozak
post Mar 9 2018, 02:43 PM

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QUOTE(ChuanHong @ Mar 9 2018, 01:59 PM)
thanks for sharing.. but im comparing Sharp inverter and non inverter.. Row 155 and row 163..
Seem like non inverter is much cost saving than inverter for monthly energy cost.. Column O

If based on logic in excel, the difference is quite minimum likely RM5 different between inverter and non inverter.. so it isnt better to get non inverter?

*Updated*
Okay i understand ady.. the tariff which is average 0.282 in excel.. but residential rate do have few categories, in case more than 200 kW, is 0.334 anad next 100 and above is 0.516 ady..
probably inverter is better cost savings in electricity?
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The inverter have higher cooling capacity compare the non inverter even same HP. Hence the cost usage is higher.
ozak
post Mar 19 2018, 10:39 AM

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QUOTE(spreeeee @ Mar 19 2018, 10:35 AM)
is rm150 expensive for ac service for below model?

1.5hp non-inverter panasonic

they claimed to do detail cleaning service by dismantle each major parts like fan vent, coil, chemical wash, refill gas, etc..
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Standard price now RM180.

Refill gas is bullshit.

It is just checking the pressure only.
ozak
post Mar 19 2018, 11:13 AM

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QUOTE(spreeeee @ Mar 19 2018, 11:10 AM)
also quoted rm80 for basic cleaning.. so what do u think they will do with just rm80?
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RM80 is useless. You can do that cleaning everymonth.

Just go for RM180 for once every 2yrs or 1yrs if usage is high.
ozak
post Mar 28 2018, 04:35 PM

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QUOTE(spreeeee @ Mar 28 2018, 04:28 PM)
i was wrong, rm160 is for r32/r22 type, for r410 it is rm220.
so, is rm220 is still expensive?
1.5hp non-inverter..
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Look expensive.

Price shouldn't different with the gas. Aircon with any gas have no different for service.

Gas is option if require top up.
ozak
post Mar 28 2018, 05:09 PM

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QUOTE(spreeeee @ Mar 28 2018, 04:37 PM)
how it should works for gas refill? isn't it needed to be filled in on each service? chemical wash will dismantle the whole AC unit..
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No. Aircon don't need to be refill the gas when service.

If require refill each time, that mean some leak in the gas line. And it is a scam if tell you require to refill each time.

My aircon for 9yrs never been refill before even take down for service many time. Just check for me the gas pressure.


ozak
post Mar 29 2018, 11:34 AM

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QUOTE(spreeeee @ Mar 28 2018, 04:37 PM)
how it should works for gas refill? isn't it needed to be filled in on each service? chemical wash will dismantle the whole AC unit..
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Here is the detail how they service.

Before take down the indoor unit for cleaning,
1) Run the aircon.
2) outdoor unit put a pressure gauge to monitor the gas pressure at the valve side.
3) Slowly turn off the valve till the pressure gauge show 0 when the aircon run. The purpose is to let the compressor pump the gas back to the outdoor unit and till no more gas in the indoor unit and the piping. Turn off the valve not to let the gas out. Hence, keep the gas on the outdoor unit.
4) Than turn off the aircon, unplug the piping and take down for thoroughly clean.
5) Finish cleaning, put back everything.
6) Open back the valve and run the aircon. Monitor the gas pressure is enough or not. If the gas remain between the spec, no top up is require.

So there is no gas lost or whatever during service.

The indoor unit have to be take down for thoroughly cleaning. Without taken down, the evaporator and the fan cage cannot be clean completely.

How you going to flush the dirt with water when the aircon still hang on top in your room ?
ozak
post Apr 4 2018, 08:43 AM

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QUOTE(arju @ Apr 3 2018, 11:04 PM)
hi, if the aircon copper routing until 51ft for 1.0 HP. Will it take more energy to cool and take longer time to cool also? tq for noob question.
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Check your aircon manual spec about pipe distance limit.
ozak
post Apr 13 2018, 11:23 AM

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QUOTE(whoopsylai @ Apr 12 2018, 09:16 AM)
Sorry again.
Sadly my Mitsubishi aircond decided to breakdown after 7years, technician came and checked, noted ??the electronic board is broken....they advised getting a new one.

I am wondering, what happens to the old aircond when I install the new one? Will the kedai people charge to help throw it away? Or will they BUY it from me for the part?
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Take it to recycle scrap yard. That can sell for RM100.
ozak
post Apr 13 2018, 01:45 PM

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QUOTE(whoopsylai @ Apr 13 2018, 12:05 PM)
wah...betul ka!!!!
then i can get rm100 lagi

does the recycle scrap yard take if the "main board" rosak?
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My 1HP sell for RM120.

It is called scrap yard. They don't care what spoil.
ozak
post Apr 18 2018, 09:54 AM

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QUOTE(omg528 @ Apr 17 2018, 09:42 PM)
really nobody is using Gree aircond? too new? or because Made in China?HAHA...
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Yes, Won't consider at all.

Why want to think of it when many good choice around?


ozak
post Apr 18 2018, 05:37 PM

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QUOTE(omg528 @ Apr 18 2018, 05:16 PM)
GREE is one of the manufacturer for those company rite? They are doing quite well recently in China and expanding overseas..
I actually planning to get GREE for my house....
Anyway, SHARP are doing promotion also...maybe can consider...AHX18UED only selling RM2,000 for 2.0HP Inverter set..
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I don't know. That is China side famous. Not here.

Try the Gree and let us know here.
ozak
post Jun 2 2018, 03:10 PM

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QUOTE(keisukex @ Jun 2 2018, 08:47 AM)
pls dont go for non-inverter anymore. your electrical bill will killing you. i just comparing non-inverter and inverter of 1.5 hp. turning on only at night. my eletrical bill for non-inverter Rm 130 per month while inverter RM 50 per month
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There is a type of consumer where they afford to pay the bill.

But can't pay the upfront cost.

You will see the debate will never end.
ozak
post Jun 2 2018, 08:17 PM

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QUOTE(thenuts15 @ Jun 2 2018, 03:49 PM)
It depend how cold u set the temperature.I am using non inverter aircond 1.0 horsepower about 12 or more hrs a day.
Temperature will be usually at 28 i set.My bills per month is at below RM100.
NO point to set temperature so cold and then cover with thick comforter.
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I sleep naked at 24°c. brows.gif
ozak
post Jun 2 2018, 08:36 PM

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QUOTE(ryder_78 @ Jun 2 2018, 07:03 PM)
If you want to save electricity, choosing the lowest horsepower (1hp) is most crucial as it's a lot more economical even than the next one up (1.5hp). So, try to select 1hp if possible. For bedrooms, try to go with 1hp even though the bedroom might be huge because you don't need very cold temperature to sleep. I usually set 26 degrees C at low speed at it is already very cold.

For living room, depending on the size you usually need 1.5hp and above so you can't compromise to much in this area.

The comparison between inverter and non-inverter (RM130/month for non-inverter and RM50/month for inverter) may be a sweeping statement. The difference can't be that much as it will depend on usage pattern. As I have said earlier, usage pattern is a much more critical and important factor than type of air-cond ie. inverter or non-inverter. No doubt, inverters may be more economical in terms of electricity consumption. Nevertheless, if one practices good habits with the use of air-conditioners, non-inverters can register good economy too. Ie. 25 degrees C and above at low fan speed instead of 16 degrees C at full blast.

Once you go above 1hp, meaning 1.5hp and above, the electricity bill will be a lot higher. Our house has 1hp. 1.5hp and 2.5hp. Once the 1.5hp is used occasionally in one month, the spike in electricity bill can be easily seen. In other words, if it is possible, try to fit 1hp instead of 1.5hp. 1hp + ceiling fan can be a good replacement for 1.5hp in some situations.

Similarly, it's non-inverters for me too.
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Choosing a aircon capacity not base on the feeling and small HP will save. Very wrong.

You need to calculate the room size and BTU to get the correct HP aircon. Undersize will just cause the aircon cannot reach the temp and run non stop. Calculation website is easily available by google search.

Previous using non inverter 1hp for room. Not cool enough. Have set the temp lower. Than bill higher.

Once spoiled, straight change to inverter 1.5HP when available. (inverter just launch that time) Set to 24-25°c is already cool enough. Bill drop to below RM70.

It run almost 10 yrs now. The saving cost is already more than enough for me to get another aircon anytime.
ozak
post Jun 2 2018, 10:08 PM

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QUOTE(ryder_78 @ Jun 2 2018, 09:23 PM)
I am aware about air-cond capacity that's based on the size of the room. I am citing examples of rooms that aren't calculable, large open spaces. Imagine a big hall of irregular shape with large openings, and you just want to provide cooling for one small area only. If you want to calculate the whole area, 2.5hp also will not be sufficient. In this case, the selection of 1hp over larger capacity units will be applicable.

In typical cases of an enclosed room ie. a bedroom, for your previous case of a 1hp non-inverter being not sufficient, there can be few possibilities. Either the room size is too large (1hp being under-spec) or the unit is poorly maintained and not producing the coolness and when the temperature is set lower the electricity bill is higher. Different people have different cooling requirements. Some people may feel that the room is already cold while some may feel the same room to be warm and not cold enough. That is another factor as well.
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For hall I will still calculate the size. I need to know what is the actual HP is needed. From there, I will lower down the HP but not too low. At least I have a guide there. With too small aircon, the blower is not wide enough to get a wider air flow across the hall. That also require a ceiling fan and set at 27-28°c, good enough.

For the bedroom size, it between max BTU 1HP from the calculation. But I miss judge the windows, bathroom and the wall heat from evening sun. That require 1.5hp at min spec btu. 1.5hp reduce the aircon from running more frequent and don't need to set the temp too low. That is why it save.

I have a thermometer on the wall to know the actual room temp. So I can precisely know what temp suit me for sleep and what aircon temp set that able to achieve actual room temp. If the aircon cannot achieve it, than I know it is time to service and maintenance.


ozak
post Jun 24 2018, 03:15 PM

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QUOTE(aurion @ Jun 23 2018, 11:15 PM)
Maintenance cost for R32 should be slightly cheaper than R410A as it is a single component refrigerant, where else R410A is a combination of R32 and R125. Gas for R32 can be topped up at any level, while R410A depends on the pressure level. If it is below 100psi, the whole thing has to be discharged and refilled. If it is above 100psi, it still can be topped up.
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There is no different. Your aircon doesn't leak.

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