Non-inverter can turn on 3 hours only?

Sometimes, it is not worthwhile to fix old problematic appliances.

Labour cost may be expensive, as well as you don't have warranty that after the fix, it will not be problematic.
Fixing a compressor or replacing compressor may cost a couple of hundred buck already, unless it is just replacing inexpensive part like capacitor etc, which just a simple fix, then different story.

Ten of thousand of offices, shops are using non-inverter air-cond for more than 8~10 hours out there.
So they turn on 3 hours?
or they are stupid to install non-inverter?
No
Why?

Because there won't be much saving by using inverter air-cond in those environmenet, as people go in and out frequently that resulted loss of cool air frequently, and the air-cond won't able to achieve desired temp like 23c, whereby the advantage of inverter air-cond won't be significant.

Despite pages and pages explaining how inverter works, and how the saving come from, it seems still can get a grasp of the understanding on the inverter mechanism.

Inverter /= automatic save current.
It depended on how it works, and being used.

Undersize air-cond, room that can't properly heat insulated, or loss of heat, aka cool air can't properly contained within the room, you won't see the saving from inverter.
As when inverter is full blast or running 100% time, the electricity consumption is as same as non-inverter.

Look at the label of electricity consumption of inverter compressor, the wattage needed by inverter is as same as non-inverter.

Offices space consume even more electricity, with most corporate environment are cost saving minded nowadays, every opportunity that they can save cost, they will do

That's why I said, still can't get a grasp how inverter works.

Inverter does save you electricity when being used in desired condition, but it is not "automatically" give you the saving.

Look at the label on the compressor or spec of inverter compressor, does it stated inverter compressor consume 30% or 50% less than non-inverter?
The answer is no.

Inverter still need to run at 100% to cool down the room when the room is not cold enough or far from the desired temperature.

Tell me, when the room temperature is 28c, while the preset temperature tell the air-cond to achieve 18c,
what the compressor will do?

Run at partial load? your room will forever not cool enough, as at partial load, the coolness delivered also becoming partial.
The compressor need to run at 100% rpm to cool down the room in this situation.
Run at 100% rpm --> electricity consumption is as same as non-inverter.

Another wrong understanding.

Non-inverter shut down the compressor when the preset temperature is reached, this is where the power consumption being reduced, but this is poor compared to inverter mechanism of reduce the rpm of the compressor.

Inverter doesn't run partial load all the time, it depended on the situation.
When inverter sense big difference between the room temperature vs its pre-set desired temperature, it needs to run at 100%.

The one doesn't realise the mechanism within youself, despite pages and pages and numerous of time other explaining.

Another wrong statement.

It is gas R-22 phase out, not non-inverter.
Non-inverter can work work in R410a gas as well, if manufacturer decided to design the non-inverter to work with the gas, air-cond just need a refrigerant to work with.

It is not inverter must use R410a, or non-inverter must use R-22, only they can work.
Refrigerant function is to "transport" the heat from the indoor to outdoor only.

Inverter and non-inverter is just about how compressor works.
Inverter use DC to control the compressor rpm, while non-inverter using AC, which cannot control the rpm.

Non-inverter is not banned, it is R-22 will be banned in the future.

Inverter does save electricity and work at lower power consumption, but it depends on what is the condition of the room.

That's why no manufacturers give accurate number how much inverter can save (they can only advertise save as much as 30% or 50% with a * behind,
because the saving variable depended on the room condition itself, which vary from one and another.

Because you don't understand the working mechanism.
That's why you cannot answer, and tell people "don't ask me why".

I really give up now...

Now, I only know inverter save a lot of power, then rest, throw into drain already, don't need to know, don't ask me why.

They don't care one, they only care to make profit.

Sadly to say, most condo still come with concealed R22 piping, as far as I encountered.
So high probability yours one may be for R22.

It is not some "special piping" but thicker.

If the piping is catered for R22, then advisable to install R22 air-cond, if not remove it, or install a new piping.

Get installer to inspect the piping if cannot confirm the piping type.

This post has been edited by cherroy: Jun 24 2015, 05:46 PM

You are lucky not to hire this kind of installer.
Experienced installer should able to identify it easily through visibly and measurement of the pipe.

Management office only doing admin work on building management, they generally do not know technical stuff one.
You are better off to ask the developer engineer instead of management office personnel.

Can use is one matter.
While the pipe is purposely cater for R410a spec is another matter.

You don't ask the engineer can use or not.
You ask what is the spec of the pipe.

Pipe are all the same, just thickness, and diameter only.

The concern of pipe is about ability to withstand the higher pressure of R410a which operates about 1.6x R22, especially at joint part, as mentioned by forumer.

Smaller HP motor how to pump higher pressure?

Inverter or non-inverter, the procedure of installation is the same.
Installer has the habit of install wrongly on inverter but not in non-inverter?
R22 too cheap until full too much for customer?

What a statement made...

I only know every installer will check the gas pressure after they filled in the gas.

If like that, everyone install inverter one may be need to "scare" installer not doing the right thing during installation.
So better to install non-inverter so that eliminate the chance of wrong installation.

Previously say non-inverter cannot on more than 3 hours,
now inverter cannot set below 23c....


Little saving is actually quite simple, because the inverter need to run 100% most of time due to the room condition.
Not that cold may because of at the particular time inverter is running at partial load, hence the coolness output also partial.

This post has been edited by cherroy: Jun 26 2015, 10:52 AM

wow,
I am quite amaze with the adding on further legendary comment.

Non-inverter ----> stronger vibration.

All proper compressor should have little vibration across, no manufacturer produces a compressor with "strong vibration" one.

Vibration normally caused by improper installation, particularly at mounting part. A wear bearing, fan blade broken causing imbalance etc also a factor causing vibration.
Vibration definitely is not because it is a non-inverter.

A brand 1 HP may not the same with B brand 1 HP, although both being labelled as 1 HP.

Just like Toyota 1.6 vs Proton 1.6, both also 1.6, but they used different engine hence the output and fuel consumption is not the same to start with.

Just like A brand 1 HP BTU may be 9000, while B brand 1 HP may be 11,000.

Nobody is against inverter nor saying inverter doesn't save electricity, but to say non-inverter --> more vibration is overboard already.
I never came across any inverter manufacturers made such a claim before.

I don't want to win anything, just want to correct some statement and understanding which is not right to start with.

Inverter is not "advance" technology, DC motor and feedback loop to control the DC motor rpm exist even before I was born, just how they deploy in the air-conditioning system only.

The "green" actual term should be less polluting, not really that "green".
The real "green" is not using air-cond, back to natural condition.

There are too many marketing gimmick on "green" and "organic" already.