oh,never thought of Angmoh website calculator is different
Thanks for the fast reply sis

Hi, I would like to ask if it is possible to install 1HP aircon using 2HP piping. The piping in my room is designed for 2HP, but as it is a small room, it only needs 1HP AC. Thanks.

Yes can. I plan to do the same for my house. The reverse cannot though.

100sf BR1 1.0hp NON (9k btu class)
this room no space to walk around after putting a double bed.
hence 9k btu enough

167sf MBR 1.3hp INV (12k btu class)
this room plenty of room to open yoga mats even with double bed installed.

hence 1.3hp recommended, or if wanna use 1.0hp need to look for best-in-class models with 11.5k turbo btu (9,730 nominal (2,047-11,500 turbo)) still can hack it.
for low end 1.0hp with 9k btu that maxes out their turbo mode within 9k range too, this will be insufficient (since their nominal vs turbo also no substantial difference in cooling power).

385sf LVR at least a 2.0hp INV (18k btu) minimum.. but usually 2.0 and 2.5 price delta is small so can get the 2.5hp (22k btu). A 1.3hp is confirmsure not cold.
If your place is warm (heat soak due to top floor/west facing/your target temp is low like 18C) then best to do 22k btu.
If you are like me (I can talk aircon all day but personally I can't withstand cold, the coldest I always use is just 26, typically 27C for aircon target temp) then 2.0hp will be sufficient.



3.0hp is in extreme case like west-facing, untinted windows, zinc roof with 0 insulation, black painted walls. For 385sf a 3.0hp is likely to be grossly oversized.

Possible.
Actually it is also surprising that they installed 12.7+6.35mm piping when this is commonly used for 2hp (18k btu) class.
The usual size for 1.0 and 1.3hp (9k and 12k btu) is 9.52+6.35mm.
What happens in the bigger copper pipe (Gas/suction line) - the smaller pipe is the liquid line, all 6.35mm so no issue here - is that the gas does lose its velocity if oversized piping is used.
Normally nothing much will happen but the risk of gas too slow to return compressor oil is there. As the longer the piping means the gas slow down even more, if AC spec max piping length is 20m with usual size, when you run oversized gas line you need to make sure your piping is lesser than actual proper spec's max length. If its around half (say actual length is 10m for a 20m max length AC) it should still work fine. More issue happen with UNDERSIZED lines than OVERSIZED (as in your case).

There exist 1.5 hp models from Pana using the 12.7+6.35mm piping size requirement so you don't need to worry about the pipe size.
One example is 1.5HP ECONAVI Non-Inverter Deluxe Air Conditioner CS-C12QKH (CU-C12QKH)

Hello Sifus,
Not sure if this is appropriate to ask here, several AC sellers I approached told me Pana and Daikin are out of stock in the market... not sure if this is a marketing gimmick or sales push strategy. Am looking for 8 units as part of my house reno. Can anyone share/PM reliable seller contacts?
Thanks!

There are no reasons for sellers to hold back stock if you agreed to their price. High stock inventory is dead money.

Buy from those authorised resellers selling pana or daikin and not from those selling mixed brands. If they still dont have stock, then is manufacturers problem.

Not sure if this is the right thread to ask.

Do you guys tint your windows? Personally I will be using those blind that prevents light from coming in, but not sure if still need to tint? Effect really good?

Current house has tint but I bet it loses effectiveness already since over 20 years. Not sure if aircon good enough.

Appreciate if you guys can intro too the tint you use if indeed tint is very much a necessity. Thanks.

For aircon, yes indeed a lot of inverter aircons running out, so they say. In fact a lot of electronic stores always say this run out that run out. But when you really put money to where your mouth is, they will say get stock from their competitor etc and even give you a competitive price... lol.

For my hall (don't really know size, double storey terrace), I plan to use 2 1.5HP aircons because the in-build pipes already there and we will also install Fan. One inverter and one normal. The idea is once somewhat cool enough I will switch off the 1.5 normal one and leave only the inverter one on. Or is it I must use 2HP?

This post has been edited by joeblow: May 8 2021, 05:30 PM

Which half past six ac dealer will do business like you mentioned?

Most important whether buyer agreed to selling price.

If buyer willing to pay double and put the money in seller's mouth, die die also he will try to find one unit !

Good tint has high IRR and TSER. 3M stuff should be good, I use 3M for front windscreen only and it already cut alot of heat for the car. Rest untinted.

Darkness (visible light) transmission is not a good criteria to compare tints. Most of the heat still come in on IR which is invisible wavelength.

For your hall, best to measure the width x length in feet with measuring tape and draw out the shape in ms paint for more accurate sizing.
Because house layouts can vary, and so does the living hall..some more bedroom and small living..some no GF bedroom and long living hall.. or living room is big and have small offset for dining area.. too many possibilities. But if developer already built in the 1.3hp pipes then it may not be excessively big room.

This post has been edited by ceo684: May 8 2021, 05:54 PM

Do you think a blind that blocks out light good enough to replace tint effect?

Actually the hall (need to verify) I believe they have the bigger pipes meant for 2hp. But I really don't stay in hall that long and just for dinner only. Maybe occasional guests. So I guess 2 1.5Hp should do the job. I will get the aircon guy to go see and give me recommendation.

As for the half past 6 dealer, actually it is very reputable one. But I am lazy to write again the full details, let it be. I will be buying several Panasonic 1.5hp inverter first, the rest most likely Mitsubishi non-inverter 1.5hp and 1hp. Still thinking if buy now to lock in the price or risks further price increase after 3 months (renovation period).

If not excessively hot ie facing west then generally blinds or blackout curtains will work.

Mitsu u need to see whether it is MHI or ME. Some MHI is only 2 star ST and 1/5 yrs warranty.
Hitachi non inverter can be slightly cheaper, 3 star ST and 2/7 yrs warranty.

Ya it is ME one, 3 stars and 2/7 years warranty made in Thailand. I am from JB area, it seems very few people carry Hitachi. Maybe I go ask around.

Thanks ceo684 for your help!

I will look to get a 1.0hp NON for bedroom 1, 1.5hp INV for Master Bedroom and 2.5hp INV for Living Room.

Which one do you get for the 1.5HP model?

My new kondo have a 1HP aircon in living room and 1HP aircon in dining room.

I am doing renovation, want to change new aircon. Is it wise to just place one 2HP aircon in living room and cancel the dining room aircon (living room & dining room is together)

Thanks

No.

No. It is still advisable to get two separate airconds.

Pricewise about the same but better to not put all the eggs in one basket. Usually 2 separate IDU give better air circulation.

Hey all,
Is there something like a smarthome solution I could use to take control of aircond temperature? Due to WFH, we sometimes have 4 AC running during day time, but some of them always set temperature at the lowest causing the electric bill to choak up. I would like to maintain temp in between 22 to 25 celcius for some of the AC units.

Depending on model some can be retrofit individually (per AC) with wifi module like Daikin or Pana. The hotel room controller type may not work with split AC, most casettes should be able to accept the control signals IIRC, but usually split AC dont.

If ur using inverter then the 16C freezer is not required to keep the temp running..however if power usage is a concern 25-27C will save more.