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%.

non inverter will exist forever la.

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.

It depends on the room size. Of course if your inverter air cond can reach the desired temp, you will save electricity.

For big rooms which will forever cannot achieve desired temperature, you won't save any electricity at all.

Seriously you need to understand the mechanism on the savings.

So tell me now, if you have limited budget, and you can only choose one. Which one will save you more electricity now?

1. Bigger horsepower without inverter (that can make your room achieve desired temp).
2. Small horsepower, with inverter.

Both same price.

(Sorry but bigger horsepower with inverter is not an option due to limited budget).

Now you know why inverter doesn't always save electricity like you wish.

I use both and I know the mechanism behind the savings. Unlike you.

I mean I use non-inverter before and changed to inverter now.

1. I don't run my unit at lower temperatures. Please do not assume thing.

2. I don't use Pana brand. Please do not assume thing.

3. I use Daikin. Please do not assume thing.

4. I did achieve savings. Because I know the mechanism behind the savings. Please do not assume thing.

Get your facts right.

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. 

any hotel or hospital room use inverter ma? they can save more than us.

if you have 10 non inverter aircons dismantle for rm 100 each good condition. I will buy it from you liao.

Roughly how much is the cost of repairing and is it worth to repair?
Can you recommend me a good replacement for it? I'm using the air cond for about 8-12 hours a day and the room is quite small,about 13x13

Actually, I just felt pitiful for those who just listened blindly to his misleading advices.

You're wasting your time trying to explain to him. He basically ignored the part you said about the undersirable scenario there would be no savings between inverter and non inverter. He just keeps spouting half truths.

To summarize, very simple. Look at Papparich, Old Town, those standalone shop lot ones. In their case there would be no savings from inverter air con as the doors are wide open. Cool air will just escape to the atmosphere. The air con would be working 100%. There will be no savings as the LOAD is 100%.

In a sealed environment, such as a room with doors and windows closed, inverter may give you savings.

Likewise if you turn on the air con for only 3 hours or so, it doesn't make a significant difference since inverter and non-inverters would be working 100% to quickly bring the room temperature down.

Sorry but I know how to get savings using inverter because I understand the mechanism behind how inverter works. Unlike you who just blindly advised others "get an inverter, you are selfish and only think about yourself if you use non-inverter" bla bla bla...

Since when did I claim that inverter didn't bring down my bills? Don't assume thing.

You are just good at salesman talk. Improve your technical skill.

I already achieved the savings that I needed. Thanks for your offer but I am afraid to listen to your advice now. Not sure whether your advice is correct or not.

Cheers 

Sorry but I know how to get savings using inverter because I understand the mechanism behind how inverter works. Unlike you who just blindly advised others "get an inverter, you are selfish and only think about yourself if you use non-inverter" bla bla bla...

Since when did I claim that inverter didn't bring down my bills? Don't assume thing.

You are just good at salesman talk. Improve your technical skill.

My sister bought a new condo unit. Cables for a/c were pre-installed.
Recently asked an air-con installer to go to have a look. He said the cabling is of 3-wire type, so can only install non-inverter a/c or Panasonic inverter a/c.
Also, he said we can only install 2.0hp a/c in the living room, not more, not less.

Are there such restrictions