8 years back Panasonic or national still the best in quality control, nowadays even York or acson can be easily more durable than panasonic made in china parts.

Nobody said inverter can't saving electric bill than non inverter, also nobody can tell you not operate long hours or short hours can be save or unsave power consumption.

Anywhere you're the inverter user than you would feels than inverter won't cheat your pocket money.

And also inverter or non inverter for parts and maintenance nobody can guaranty you after warranty can be spoil or higher cost than non-inverter unit.

Buy electric items or devices is depend your luck.
Anywhere you wanna just go an buy, don't think so much, now is 2014 already.

Huat ah..

1st you may check what is ur brand and how many temperature do you pre-set?

Mine is Mitsubishi inverter only set in min. 25c and low fan speed, my Living hall 2.5hp inverter operate from 10am to 11pm everyday on my electric bill only cost me less than Rm400 with another 2 units operate everyday over 8 hours.

What's your point using inverter aircond still set in 19-20c?

Do you think on smaller room these still comfortable?

Before talking about setpoints, first you need to have the right HP for the room size. That's called rightsizing. If HP is too small you will never reach the set point and the compressor doesn't cut off. That's like trying to drive a kancil at 300kph.
If the HP is too large, the cut off will happen too soon before the compressor reaches optimum efficiency. That's like driving a Ferrari in a traffic jam. Either scenario is wasteful.
Using the right size HP and selecting correct setpoint both need to be done.
Your uncle likely failed to do either, accounting for the excessive bills. Also setting the setpoint at 18oC is the wrong way to use the air-conditioning. Setting at 25 is correct. That is where inverters come into the picture. Basic Air-conditioning compressors work by turning on and off to maintain the set point.
Inverters work by reducing the need to turn off completely. Not only it saves energy, but it reduces wear and tear.

Having a lot of money doesn't mean he knows everything. Do you even know how cold actually 25oC is? There is a range of combination of temperature, humidity and air movement which is known as the thermal comfort zone, in which human perceive themselves to be comfortable. 25oC is usually the upper limit. In HVAC design, that approximates the max temperature you can go in Summer before it is deemed uncomfortable. On the other hand, 20oC is the minimum temperature you set for heating in Winter before things are deemed too cold for comfort.

To be fair I absolutely agree with your earlier contention that passive cooling and better structural design reduces the need for active regulation via air conditioning. However I cannot abide by the fact that you dismiss setting 25oC as a good practice. It *is* the norm (it should be even higher if we really want to save on carbon emissions). To use another car analogy, you don't floor the pedal if you are just intending to drive at 80kmh

The whole point of all the technological advances in HVAC and environmental design such as inverters etc is that you would want to adjust your living environment so it is comfortable with the minimum drain on resources.
It's not just about the money here.

It's just absolutely wrong to even justify setting 18 or 19 or even 20oC in our Malaysian climate as it is extremely difficult to achieve. To be honest with you I think the majority of Malaysians are ignorant about how air-conditioning is supposed work. An expat friend of mind once remarked how silly and ironic it was to see Malaysians set 18-19oC in their office thermostat and yet come to work clad in sweaters and jackets, complaining it was "too cold".

FYI until recently I lived in a 3 storey house with 8 air-conditioners, (including 2 energy-sucking 2.5 and 2HP cassette units) and my monthly bill was rarely above RM170. That was because I minimized usage of the air-conditioning to just a few hours at night, not seeing the need to blast it on 24x7 and tried my best to use electricity saving devices like inverter fridges, LED lighting etc. It's no point bragging about electricity costing RM700-800 and being able to afford paying for it. It think it's downright shameful nothing more is done to lower it.

just my 2 cents'

I'm just pointing out some facts and trying to correct some potentially misleading points you brought up. A lot of what I say is backed up by sound theory. Some of the things you are saying are clearly based on practical experience, but not fully informed by theory, and that makes it dangerous.

If I tell you 25oC is cold enough a setting, then if you are not getting it "cold" enough, it means that something is not right. It means *potentially* one or the other of the scenarios I pointed out. (assuming there is nothing wrong with the workmanship or the installation)
The more common scenario in Malaysia is I believe, people buying air-conds which are way too small because of initial cost consideration, and then switching it at lower temps because they can't get it cold enough. You NEED to right-size.

Having a lot of air conditioners doesn't mean I have to switch all at once in order to get a humongous electric bill: I do accept that usage of air-conditioning will always be higher slightly than having none at all; I *understand* the potential impact on the environment of excessive electricity usage and try to keep within acceptable bounds; I am *willing* to pay for that *small* premium for additional comfort within a reasonable amount, but that is as far as it goes: It's mainly there so that I can have it when I *need* it, e.g. when there's a party and I have like 50-60 guests milling around the premises. I don't think I'm the one being childish or presumptuous here.
I don't need you to salute me because that is not the intention I brought up the matter: you can't fight the laws of physics. You use electricity, there is a price to pay, not just money, but in terms of impact to our environment. That is why we must use what we have responsibly.
If I say 25oC is the correct set point, and you are not getting that, you need to find out what really is the matter. That's all I'm telling you.

Not need to comparison too much for others user like no tomorrow.

The important is you be the user here.

No matter how great or how much of the monthly bill is = you be the paying person.

We would advise you to installed inverter for save power energy and kept min. require for inverter unit as set point for 25c that's good than enough for your room size as 3m, 4m x 3m high.

Once you has installed and come back to tell us how much you can save or really can't tahan lower than 25c there is still in future of you points to view.

Care to elaborate on this?
Unless you are replacing/refilling the gas, which is not all the time, the labour cost of just cleaning should be about the same.
Even then it's not always true, because not all inverter air-conditioners use the more-expensive R410A gas, which should be around RM2xx~ (but dropping fast)

so anyone can help me with this?

should be R22 as the installer told me the servicing cost is lower compare to panasonic inverter...

yes, i agree with you on the shop part...i went a few shop,they advise me differently according to their sales price margin. i ended up buying from the installer. he told me anything aircond is almost the same...he gave me advise on the inverter difference between daikin and panasonic. then the normal unit he said not much difference so i choose panasonic instead of york as my work place use york very loud sound...

both aircond is for my new house...the only thing is the installation is on the high side...

talked to the electrician that helping me doing the socket/heater point/ac point this afternoon
he suggested the same thing as you


install above the wall bath 2 and drain the water into either bath 1 or 2
i think 2HP/2.5HP should be sufficient as there's a fan near dining area
kitchen wont have too much heat as the stove was not inside the the unit
the dining area+kitchen+utility room will have sunlight on the afternoon-evening, so i gonna do put some tint film on the windows to reduce the heat

yeah, i also get bored with panasonic
all my relatives uses panasonic/national aircon and home appliances
so they all suggest panasonic to me

i noticed that ME give 2 years warranty on blower,and 5 years for outdoor unit
other brands give 1 year on blower +5 years on outdoor unit

spare parts wise, i was told that pana/york is widely available compared to ME
but when come to service the aircon, all are the same right?
regarding the 1HP aircon, i will use the aircon if the temperature is too uncomfortable, otherwise i will be using ceiling fan all the time
for the utility room, that room is for my sister and will be vacant as she's outstation for her studies, only come back to stay for 1 month, twice a year, so it will be a guest room i guess

worth to get inverter for the 2 * 1HP, or just get non-inverter model? should i go for inverter for the living hall as well?
yeah, i realized that also
i gonna follow kimsim's suggestion
thanks for the input
the thing is that the management limit 2 AC per unit, but i saw some unit got 3,
4 unit is not recommended by them, so i go for 3 split unit
if use 1 split unit 1.5HP + 1 system 3 (1HP+1.5HP+2HP), if the system 3's outdoor unit rosak = all 3 AC become useless
thanks for the suggestion, considered to put 2 unit in common area before 
but the thing is that the management limit 2 AC per unit, but i saw some unit got 3, so maximum is 3
gonna install the outside one in a more central location

i see
thanks for the input
decided to go with std type aircon
panasonic generally dont fail fast, but it doesnt mean that other brands are not good
ME's easy clean is one of the factor i took it into consideration

Yes,for my room i got the inverter unit as if turn it on,it will be night till the next morning.the living hall will only be on if there is guess...so thats why i'm choosing just the basic model.

This installer i know should be doing on his own.without attach to any shop...as he did mostly factory and also big projects...hopefully is worth paying the price :-)

Ooo,at daiso...let me think where got daiso near me...haha...nearest is setia city mall...that will also take me time to go there...will try to pay a visit...

Not sure which model is mine...panasonic the most basic model without eco navi and anything...is just a basic aircorn unit. But i've use panasonic before,is not that cooling compare to york...but for home it work just fine as the aircorn and compressor produce less sound compare to york...thats what makes me choose it over york...price diff only 50...although i personally like the york cooling king...

if you said is about the installer then may i know how actually the unit should be placing? do they have this kind of guide line?

like compressor must higher than indoor unit? or etc...

Due York DC Inverter & daikin is under one roof.
All the parts from York also quite similar like proton products, you can buy the parts as cheaper price to be compare as daikin or others.

Just the rubber parts won't be last longer than panasonic parts.



Due the Panasonic is made in china already.
So I won't comments as much.

Well,no point arguing which is good or which is bad...as mostly malaysian like the brand that have most publicity and advertisement...

Just get whatever you think is reasonable ans suits your need :-)

hie,

anyone notice panasonic conventional air cond takes longer time to cool the room ?

compared to say, york?

right now, i have ordered the following due to the salesman advise:
1. 2.0 HP for living panasonic ionizer
2. 1.5 HP for master room ionizer (because i say i dowan inverter)
3. 1.0 HP york conventional for other rooms (because he say pana takes long time to cool)
any expert here can advise?