Thank you for you details explanation.

Another question about how to choose between inverter or non-inverter. Is it really inverter only save energy if use over 7-8 hours?

So mean inverter can save even  less than 8 hours usage?
Is it mean non-inverter still can save energy if temp set at 24-25 C for over >3h?

Inverter
Drive all the way to work using car with full working gearbox and accelerate gently normally.. if jam press 2% if clear road speed up la.

Non inverter
Drive all the way to work using only the 2nd gear only and always press maximum gas when moving and maintain it at maximum. You only have one gear and you either press full gas to move or not at all, like on off switch. There is no press half gas or press 2% gas. There is no choice of using 1st 3rd 4th 5th 6th gear.

Thats how a non inverter and inverter work. Basically inverter fancy name is VFD (variable frequency drive) acting as a gearbox & speed control for the motor.

For first 5 min not much measurable diff as u still in taman rolling slowly.
Once u get to highway or encounter jam you still drive like the two extremes of course your fuel also makan with non inverter. The difference in fuel (=AC power savings) is better when you have a full gearbox and accelerator/gas pedal control (=with inverter). Of coz this is just an analogy to compare but inverter having a gearbox is smoother drive (=temp control) than trying to control driving like a mad person right..

whether the fuel consumption differ enough to justify installing a proper gearbox in your car instead of using only one gear to drive everywhere.
If the car (aircon) only used 10 days in a year then no need inverter la.
For everyday used car it makes more sense to get one with proper gearbox since driving with 2nd gear max acceleration will never save fuel.

As stocks of X10CJ depleted already..as it was previous series price to perfomance good contender..can also consider:
Sharp AHX9VED2 9700btu also a good contender for 1hp class, quiet ODU altho spec on ODU sound level NA

Samsung wise.. I think I scared most of my friends from getting one that I can't really comment on the ODU noise, the last one I dismantled was rather old series (so no comment)
Daikin ODU generally louder than average, spec on ODU sound level NA
Pana ODU 47db

However if you close the windows I think you won't really hear much noise from the ODU?

China haiiiiiiiii urgh one ODU confirm noisy as the ODU fan grille makes a metal on metal clattering noise lessen if u use hand to press it back firmly, will need modification to have rubber damper etc. Most other AC dont have this issue coz fan grille plastic made solve the metal on metal noise problem.
Usually multi split (aka System 3 4 5) common in SG and less common here.
It save cost upfront rather than buying many bigger 2hp units but if ur IDU is 1.0/1.5hp and you do not normally run all at once, but more towards 1 out of 3/4 total connected IDU the single split efficiency (power consumption) usually better than trying to get a 2.5L car to behave more like an axia fuel consumption in traffic jam..

It is used if u have very small place to put ODU; downside of having all eggs in 1 basket is that one ODU kaput all IDU also offline together.. generally in MY we dont face compressor space shortage unlike HDB in SG, many single split is recommended for redundancy.

Any comment on the tech Panasonic Eco Navi vs their new Eco+Ai? Actually what's the difference?

Hi guys, wan to get a aircon for my small bedroom, saw a Daikin FTKF25 selling rm1.3k which is around my budget, is it ok that air con? or there is a better option? daily usage 2 to 3 hour.. mostly at night time only.

Inverter
Drive all the way to work using car with full working gearbox and accelerate gently normally.. if jam press 2% if clear road speed up la.

Non inverter
Drive all the way to work using only the 2nd gear only and always press maximum gas when moving and maintain it at maximum. You only have one gear and you either press full gas to move or not at all, like on off switch. There is no press half gas or press 2% gas. There is no choice of using 1st 3rd 4th 5th 6th gear.

Thats how a non inverter and inverter work. Basically inverter fancy name is VFD (variable frequency drive) acting as a gearbox & speed control for the motor.

For first 5 min not much measurable diff as u still in taman rolling slowly.
Once u get to highway or encounter jam you still drive like the two extremes of course your fuel also makan with non inverter. The difference in fuel (=AC power savings) is better when you have a full gearbox and accelerator/gas pedal control (=with inverter). Of coz this is just an analogy to compare but inverter having a gearbox is smoother drive (=temp control) than trying to control driving like a mad person right..

whether the fuel consumption differ enough to justify installing a proper gearbox in your car instead of using only one gear to drive everywhere.
If the car (aircon) only used 10 days in a year then no need inverter la.
For everyday used car it makes more sense to get one with proper gearbox since driving with 2nd gear max acceleration will never save fuel.

Anyone still adding extra filter on top of original filter?

Wonder any disadvantages for long term?

Reduced airflow.

Will it have any impact on blower? I been using it for few years. Nice and clean coil inside.

Recently after i clean with water, maybe not enough time to dry up, then I close the cover back.

After that turn on the aircon have some smell, and notice some white powder on the coil after few weeks. Not sure is mold or not?

I have clean it up and remove the extra filter to monitor.

That's why i wonder should I still continue apply the extra filter.

Will it have any impact on blower? I been using it for few years. Nice and clean coil inside.

Recently after i clean with water, maybe not enough time to dry up, then I close the cover back.

After that turn on the aircon have some smell, and notice some white powder on the coil after few weeks. Not sure is mold or not?

I have clean it up and remove the extra filter to monitor.

That's why i wonder should I still continue apply the extra filter.

no.

That Daiso filter is crazy good, after 3 months usage my inside filter is still clean and the fans are in clean state. Usually within 3 months, my filters all clogged up and the blower starts to accumulate. About 6 months then I need to clean the blower already else no wind.

Alright, thanks for info.
Yes, i almost no need to clean the coil inside as always clean. I only vacuum that extra filter. Well, maybe i keep using too long, time to replace.

Btw, you add on the filter itself or cover up the whole air intake on the unit?

Can check pana website..they have very detailed explanation on the feature and also flipbook catalogue
This series technically below par cooling capacity at 9000btu only and 4 star energy saving..only the badge is good if daikin take anything but their cheapest series. You will see other R32 series in their range is rated at >9000btu, costs more lah.

Price performance ratio:
Sharp AHX9VED2 9700btu 5star better cooling n better energy efficiency.

so i installed 1 unit each of Midea inverter last week(MSXS10CRN8/13CRN8)

also thanks to the input here (especially @ceo864)
my choice of midea comes to:

- price (for sure, it's one of the cheapest in the range of Haier, Hisense etc). too bad Gree inverter isnt easily available
- my previous 1st gen inverter Midea (r22) kong after 10yrs. so that gives a confidence on the reliability
- for the given price difference, actually i don't see much of a difference (maybe i'm wrong) with functionlaity/technical workings of normal vs ultra premium inverters. well in that case, if it fails after 5yr..then juz change a new one
Experience so far, has been good, only for 2days.
cooling is cool and quiet
I would say i'm satisfied for the price paid (especially with 18months installements w/o interest)
Items bought from shopee, with installation. link is here for those who are interested
installer is good and did a professional job (measuring, checking leveller etc)
i have no affiliation to them, juz good experience

https://shopee.com.my/product/52358338/1734327075[attachmentid=10839058]

That Daiso filter is crazy good, after 3 months usage my inside filter is still clean and the fans are in clean state. Usually within 3 months, my filters all clogged up and the blower starts to accumulate. About 6 months then I need to clean the blower already else no wind.

Installing such filter will reduce air flow but over long term will it do harm to the indoor unit cooling coil?