Ceiling Cassettle type aircond got ioniser?

I bought an aircond from lazada. I noticed there are some dents on the fin, is that normal? First time buying aircond so it is my concern.
Here are some of the picture

This is pretty normal. Not too many.

Some of this fin is repair in the manufacturing when damage by some handling process.

Nice to hear that. Thank you

They do sell AC fin straighteners in the market. I have seen it somewhere on the web but can't recall the links at hand.

No need lah.

If you want to repair it, just get a long nose plier or a flat tweezer will do.

But such very tiny amount of damage won't effect the efficiency.

Well, those who are adept at DIY may not require it but for the benefit of those who are curious, it's called an air conditioner fin comb. The 'repair' process is called air conditioner fin straightening.

Yup I know.

I work in those manufacturing dept before.

But small amount like that will not affect the performance right?

deleted.

This post has been edited by fixgd: Nov 19 2017, 05:44 PM

Try calling Alex‭ +60 19 499 4522.‬ He has quite number of experienced technician. All my AC’s were serviced by his team.

attached layout living. Dining area i will just put fan no need aircon when eating.
So is either 1unit 3Hp or 2units of 1.5Hp cassette in living area. Tq please assist.

This post has been edited by arju: Nov 21 2017, 09:19 PM


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Unless an openable partition dividing dining and living area is installed you need to add the dining (13' 7" x 14' 2.25") to the living (21'x22.625'). This space is actually one large room divided into two areas/spaces: living and dining. The stairwell 21'x4.625' needs to be included as they are adjoining spaces also. Thus sizing is predicate upon a closer approximation of the whole space. If there is something like a W or accordion top hung track partition that can be closed, yes you can just take into account of 21x22.625' (minus the lopped off corner outside the entrance). Let's take approximately 660sqft.

Taking an optimistic to conservative calculation
660 sqft x 60 = 39,600BTU/hr = 4HP
660 sqft x 65 = 42,900BTU/hr = 4.5HP

Also, this does not take into account of the heat from the downlight's ballast or driver. If we tweak the heat load higher:
660 sqft x 70 = 46,200BTU/hr = 4.5-5.0HP

If budget is a constraint, a 2.5 to 3HP will render the room barely cool enough (27°C to 25°C) if not cold (25°C and below). Any colder is beyond the power of the AC to cool on hot afternoons except on cloudy days after rain.

This post has been edited by halcyon27: Nov 22 2017, 09:15 AM

thank you for your detail info. there is no partition between dining and living area. dining no intention to put aircon.
so suggest to put 2units of 2.0 cassette in living area? to at least cool 20°C in afternoon?

This post has been edited by arju: Nov 22 2017, 08:21 PM

Up to you. A single 4-5HP ceiling cassette should be ok but whether it can cool down to 20°C easily or with varying degree of effort depends on many factors..for one that space is probably not air tight as it's also open to the back and to upstairs. A small amount of cooling leakage will probably be felt in the kitchen even with the sliding door closed. Heavy curtains might help in the front. The main door might require additional weather sealing. It probably could be easier to maintain cool at 24°C than at 20°C.

Other main factors is if your unit is a corner or intermediate and where the front and if applicable corner wall faces esp critical locations that contribute easily to heat gain:W,SW,S. Whether there's shading provided by a deep porch or if there's a garden instead of a fully paved driveway, etc. All this contribute to higher heat load.

If you're going for 2 units, consider also if it make sense to have a higher HP in the front e.g. 2.5-3HP and a lower one at the middle say 1.5-2HP. The front is where heat mainly intrudes so it make sense to deliver the highest cooling in that area.

All this is assuming there's enough height clearance for the ceiling cassettes. Consult an installer that specialises in ceiling cassette to do a site inspection first to have this part verified.

This post has been edited by halcyon27: Nov 23 2017, 02:11 PM

Mine is slightly bigger than your house with one Mitsubishi 2.5hp. Ac installed. Cold enough for the entire ground floor i.e. living, dining and kitchen. Temp setting 26c-27c.
Please take note that the outdoor unit is pretty big and heavy. Around 60kg.

hi Sifus,

I have received a quotation for aircon piping.
Scope including hacking & concealed piping installation. My house is a double-storey intermediate house.
Exclude aircon installation except for item no.5 where i am moving an existing aircon location.

May i know if it is reasonable?

Many thanks in advance.

before turning off the aircond , i will turn from cool mode to fan mode , let the fan mode run at the high speed around 15 to 20 mins then i will turn off completely ... i follow the advice from an article via facebook , is it good ?

Should be dry mode and use off timer to turn off after 2 hours. PJUsa has a thread on that but discussing when and how to use dry mode operation. Another forumer have furnished this tip here or in Inverter vs Non inverter thread.

Various manufacturers esp inverters model implement this function neatly packaged in a convenience of a button on the remote which basically mimics this operation and turns off after a present time.
Sharp and Toshiba inverters: clean mode (30min)
Daikin inverters: mould proof operation (30min)
Samsung inverters: auto clean (20min)

Mitsubishi Heavy Industries (MHI) inverters as well as non inverters have a clean button but it needs to be toggled on with a pen (like reset button) so that it goes from ON>CLEAN (120min)>OFF. Otherwise if not toggled, it's just ON>OFF.

This post has been edited by halcyon27: Nov 23 2017, 08:04 PM

my daikin non inverter , but there is 3 mode : cool , tear drop ( is it moist mode ? ) , fan mode ... only 3 symbols available , to do it , which symbols should i go for ? ... fan right ?

sorry im not that expert in aircond stuff