So far so good.. my partner's whole house is using sharp. Still works fine about 9 or 10 years edi. Pretty much sharp showroom lol. AC sharp, fridge also sharp.
Mitsu old Mr Slim in parents house (from previous owner) still works great, we got the place preloved in 2009 or 2010.
Daikin as long as not cheapest series should be fine. Their cheapest one really built for pricepoint (just compare specs between series many differences).
I'mma Hitachi girl all the way - coz my room had one for many years and it worked fine, then when we moved to another place which already had AC all installed by prev owner we disassembled it for my cousin to take home to hometown.
Then when I got my own place also became a Hitachi showroom - AC fridge and kettle

Hi sifus,

I'm hoping to get some thoughts and recommendations on a suitable Ac for my apartment's living room and bedroom.

All those I spoke to say my living room + kitchen (370sqf) needs just a 1.5HP Ac to be sufficient and 1HP for my bedroom, and to go for Daikin cos they're "the best".
One of my aircon guys insist I go for non-inverter because apparently inverters are difficult to fix and computer chips have problems whereas non-inverters are easy to fix and the parts are plentiful. Recommends that I get the cheapest Daikin FTVP series.

Whether it's true or not, I'd like to get some more input before I proceed.
So far, after looking at Daikin's line of wall mounted Acs, I like the look of their FTKU series.

Based on ceo684's comments I think the 1HP FTKU model should be a good choice because it's 9700btu, but the 1.5HP FTKU model is "just" 12,100btu so I'm abit unsure.

But I'm open to other recommendations if there's better price-performance products out there. Just that I'm concerned about availability of spare parts judging from what I'm hearing these days.

Should I just go for the FTKU 1HP and 1.5HP models?

Inverter tech alone is also attributed to whether the parent brand sells inverter for industrial/commercial motors.
So there will be some inv models with wider range btu and some narrower btu, this is also co-dependent on total design parameters.

Alot of inverterphobia arises from uninformed aircon techs when in reality its so widely used in factories, whilst heavily (over)loaded applications do wear out their inverters in 5 to 8 years because of capacitor failure, in aircons the load is pretty much within set range hence the VFD of inverters (being variable frequency drive) give you a very comfortable indoor environment as it didnt stop dehumidifying as compressor motor is in slow mode.

In NON inverter, compressor motor is either full stop or full start, there is no gearbox, so when motor turns off when it has reached the target temp it gets stuffy. In a NON inv setting the temp to 25 does not mean it will on off on off every time it gets to 25 or warm up to 25.5C.

As each start consume Imax = to reduce the total motor starts Imax there is logic to overcool the room and let it warm up (overcool to 23 and turn off motor let it warm up to 26, repeat). Yes non also have soft start so its not Imax per se but i would say relatively Imax_var as the reference point is the maximum draw ever recorded by that aircond.

-----

There is also a lot of unsubstantied brand pushing but what is the constituent or core factor that Daikin > all? Spec wise I'd say compared to the other players' their entry level is so so. Is it the advertisements on Astro like the old tikes of Diamond water filter and 988 radio ads of Nesh water filter?

FTKF 1hp btu only 9,000 (3,400-9,200)
At best it is 9200 only even in turbo mode. Pressing that turbo button does not add 10 percent cooling power in this model

Meaning the cooling performance is not worth it as pretty much any other aircon in market (comparing nominal vs nominal) beats that 9k btu.
But then again the standard/economy range is built for pricepoint amd selling the badge only..just like BMW 316i..it doesnt run great despite having a bimmer logo..if 325 328 330 those will be more fun and more worthy of the bimmer logo.
Probably they cannot make the economy range too good, otherwise how to sell all the more expensive premium series

--------
Buying single split units, like my yoga teacher always say, you have the freedom to move. Don't need to follow all AC as one brand showroom
Theres no 1 size fit all design.
Most series have their sweet spot, ie whilst FTKU 1hp 9700btu is great for its class.. the 1.5 seems a bit lacking in terms of "turbo reserve capacity"

and something else for 1.5hp.. taking as reference
FTKF 1.5 12,300 (4,100-13,000)
FTKU 1.5 12,100 (4,000-13,000)
..vs the competition:
Pana CS-XPU13WKH-1 btu spec 12,500 (3,480-14,000).
Or perhaps the hitachi RAS-SX13CJ 12,640 (3,070-14,330)BTU/h

Thanks for the recommendations sis

I guess for the other points, ceo has given her feedback but as for sizing, just looking at your number (370sqft), I wont go anything less than 2HP, preferably 3HP.

You probably need to give more details, like drawing, open space leading to, windows. Maybe 2 AC is worth looking at as well.

Hello Sifus.. I need help.. my living room 471sqft and dining area 103 sqft.. no partition between living and dining area.. total area for both space around 574sqft.. should I get 1 unit 24k btu? or 2 unit 12k btu ac? 1 unit 18k btu for living room and 1 unit 12k for dining? any other option? which option save more electric?

hi all,
What are the pro and cons of using multi split air con with single compressor?

Putting all the eggs in one basket is the risk of having that ODU spoil = then you have zero aircon to use.
Many units of single split, any problem, just that one pair ODU/IDU cannot work.

Multisplit is a bit cheaper than buying many bigger (2hp+) single splits, for price-wise.
It also depend on mounting area.. if no space then multisplit better idea.. if space is not an issue single split give more redundancy.

Single split efficiency better than multisplit if you only turn on one aircon at any one time.

This post has been edited by ceo684: May 3 2021, 01:14 PM

hi many thanks for your valuable input

Sharp Air Conditioner Plasmacluster J Tech Inverter 1.0HP R32 AHXP10WMD

For this model going for rm1250 without installation is it worth?

Its rated BTU is at the low end of 1hp class. 9,000 (3070 - 10000)
the previous model AHX9VED2 better cooling performance at 9700 (3070 - 10000).

Hitachi RAS-XJ10CKM rated 9210btu (3070 - 11260) only 1199 on lapsapda
Pana CS-PU9VKH-1 rated 9,550 (2,860-10,900) Btu/h

This post has been edited by ceo684: May 4 2021, 10:29 PM

Need recommendation for a/c

Small room, no exhaust fan, 1 windows (but only able to open about 4-5 inches).

temp need to set at around 26-27C , operation almost 24 hrs.

Best energy saving

This post has been edited by dopp: May 5 2021, 07:13 AM

There is no ac manufacturer that can claim its product is the best compared to other brands. Product specs is only as good as its printed on the brochures.

Preference brand is about individual experience. If you have none, then you have to trust what other users said or to try own 1st experience.

Reliability and after sales service is my priority over energy savings for a 24 hours workhorse.

This post has been edited by mini orchard: May 5 2021, 08:38 AM

Daikin R32 1hp inverter.
Or MHI R32 1hp inverter.

Thanks for recommendation. Will check it out.

Hi sifus,

I am kinda lost on the A/C selection and would need your inputs. I have no brand preference, but would prefer a brand that has good price/performance ratio with good reliability. Doesn't have to be too cheap or too expensive either.
1. Bedroom1 @95sqft. A/C prolly will only turn on ~1-3times a month.
---->1.0 HP should be enough here? Since it's infrequently used, I think I can opt for cheaper model.

2. Bedroom2 @99sqft. Size is relatively similar to bedroom1, A/C will turn on quite frequently maybe 2-3weeks every month for 6-8h/day.
---->Another 1.0 HP? But probably better quality than bedroom1.

3. Bedroom3 @220sqft. A/C will turn on for 6-8hours daily.
---->Will 1.0HP suffice? Or should I increase to 1.5HP here.

4. Living room @500sqft. A/C will probably turn on quite frequently too (3-4 times a week) for 5-6h daily.
---->Will 1.5HP suffice? Or should I increase to 2.0HP?

Thanks for your help. If you have model recommendation, that's even better!

This post has been edited by plushie: May 5 2021, 08:00 PM

Rule no.1
Not all steppings are created equal.
1.0 hp ~ 9k btu class
1.3 hp ~ 12k btu class. The extra cooling only 30% more than 1.0 hp but marketed as 1.5hp when in fact it is just a small 30% up so you should assume this as a 1.3hp. The price delta also small indicative of relative performance between 1.0 and 1.3 hp
2.0 hp ~ 18k btu class
2.5hp ~ 22.5k btu class. This is more correct stepping than the so called 1.5 (actual 1.3).

Rule no.2
Not everything from one mfg is good.
There are some great series from Dxxkin and some "sold for the logo" only.
Sharp, Mitsu, Hitachi current ranges also seem to be lesser performance than their previous series. Thermodynamics didn't change much. Rising material costs have led to lighter ODU in latest series nowadays. Ideal (gen 1 R32 inverter) design of making it bulletproof and "best in class" cooling performance cannot keep up with material cost increase.

1. Bedroom1 @95sqft. A/C prolly will only turn on ~1-3times a month.
---->1.0 HP should be enough here? Since it's infrequently used, I think I can opt for cheaper model.
10x10 room with "for display only" can just get a 1hp non inverter. CAPEX cheap. Since infrequent use the OPEX difference from inverter will take a long time to realise

2. Bedroom2 @99sqft. Size is relatively similar to bedroom1, A/C will turn on quite frequently maybe 2-3weeks every month for 6-8h/day.
---->Another 1.0 HP? But probably better quality than bedroom1.
10x10 room frequently used get a 1hp inverter. The OPEX savings will be worth it.

3. Bedroom3 @220sqft. A/C will turn on for 6-8hours daily.
---->Will 1.0HP suffice? Or should I increase to 1.5HP here.
22x10 room size is at the border of maxing out 1.3hp.

If the room is cool even w/o AC then a good btu 1.3hp (turbo 14k+) still can hack it if temperature is ~25-27C, and the room is not heated from west (evening sun) and not on top floor.

For colder temp setting and faster cooling a 2hp is recommended. Also if west facing or the room is warm due to top floor skip the 1.3hp and go for 2hp.

26x11 room typical 1.3hp is confirmsure not sufficient to cool down quickly.

4. Living room @500sqft. A/C will probably turn on quite frequently too (3-4 times a week) for 5-6h daily.
---->Will 1.5HP suffice? Or should I increase to 2.0HP?

Again, 26x11 (286sf) room typical 1.3hp is confirmsure not sufficient to cool down quickly.
Yours is almost double that size..

25x20 room get a 2.5hp since the price delta between 2.0 and 2.5 is quite small.
Depending on layout shape and intended position of IDUs you can also substitute with 2 units 1.3hp or (1x1.3 and 1x2.0).

Good cooling performance with Pana X-Deluxe.
Last chance to get the Hitachi RAS-X10CJ best-in-class BTU/h : 9,730 (2,047-11,500)inverter + long warranty 2/10 + cheap on Lazada (RM1217 all in).
https://www.lazada.com.my/products/hitachi-...5421424354.html

This post has been edited by ceo684: May 6 2021, 02:28 AM

Hello sifus, hope to understand more about AC from you all.

I just got the keys to my condo, here is the floor plan. Ceiling height is 10ft.



I am trying to calculate the proper size AC for my unit. Plan to install 3 units. One in Living, one in Bedroom 1 and 1 in Master Bedroom.

Currently only will have 2 occupants in Master Bedroom. Bedroom 1 will be rarely used.

I used this website to calculate:
https://airconditioner.my.panasonic.com/horsepower.html

Bedroom 1 is around 100sqft, and it just requires a 1hp. Since it will be rarely used, I plan to get a non inverter.

Master Bedroom according to my rough calculation is around 167 sqft. Using the calculator I would need a 1.5hp. and this will be frequently used >8hrs every night, so it is better to get an inverter type for energy savings.

Living Room I calculated to about 385 sqft. This will require a 3hp. This unit will most likely be turned on quite frequently so it will be a inverter type as well.

So in total I will require 1hp non inverter, 1.5hp inverter and 3hp inverter.

Is my estimation correct? Before I got the keys I showed my floor plan to an electrical store and they recommended 1hp for master bedroom and bedroom 1, and 1.5hp for living room. I am wondering why is it so different.

Thank you in advance!

Hi sifus, need some help with picking the HP for my room

Room size: 185sqf
Level : 30+ (not top floor)
west facing windows

Here are some of my usage habits:

1.With ceiling fan turn on all night
2. preferred temperature around 25c -28c
3. AC on for 12hrs (8pm to 8am)


Some websites (1 2)is giving me 6k to 8k BTU (if this is true,then 1hp will be sufficient while 1.5 will considered oversizing? )
while some website like https://www.daikin.com.my/heat-calculator/ is giving me a 13k to 15k BTU (if this is true ,then 1hp will be underpowered ,and 1.5 will be borderline sufficient)

why is there a big difference between the BTU calculation
So should i go for a 1 hp or 1.5hp (1.3hp)?
I dont mind paying more for a 1.5hp upfront, my concern is more on the long term power consumption and lifespan of the AC

because from i 've read online,other than issue caused by undersizing , it seem like oversizing will also lead to short cycle and causing some issue:
increase in humidity and temperature fluctation ( loss of comfort)
increase in wear and tear of the AC from constantly turning on and off,even with an inverter (decrease in AC lifespan)
increase in electrical bill (use more energy starting up and shutting down the motor )

Any sifus can share some idea?

First thing to note a 1.5 is actually a 1.3 by virtue of 12k class btu vs 9k class btu of 1.0.
Your room size still got plenty of space to walk around and hold a yoga session so its not a tiny one - 1.3hp inverter will suit your use case well as it has enough capacity (12k nominal btu) and yet slow mode is around 3k btu once it gets to target temp.

Angmoh website calculator is based on their cooler ambient than ours.