As a normal consumer, let me give unbias comment.
Mitsubishi aircon is the top aircon as the gas pipe is huge, and with bigger blower fan and queit, powerful and bill saving. The con is the component is very expensive. U may need to change a total new aircon after 4-6 years.
Daikin compressor is "Rough" and noiser.. even worse than gree.. I suggest that you go and compare these aircon in hospitals where hospitals will have multiple brand of aircons. I have experience using these aircons. Most of the brand in Malaysia is designed for Malaysia, except ACSON... they looks queit powerful.. but more expensive.. please compare them in hospitals.. Daikin, after 1 year, most will give "jiiiii" sound (looks like capacitor problem small problem but anoying), the most noisy is Morgan.
Daikin compressor is damn small.. in fact the modern compressors are damn small with higher consumption of "bills". Morgan is powerful and very noisy compressor, and cheap. Hitachi looks quality in built, but takes long time to cool a room down. Inverter theoretically "save money" and "queit", but the old traditional split units are even save money, faster cooling and quieter without inverter. Believe me, "inverter" nowadays is merely commercially term, and they weak in cooling in order to get more "stars".
My old Panasonic aircon can cool a room within 20 minutes, 24 degree set is sufficient.. my new inverter needs 8 hours to cool the same room with the need of 16 degree temperature set. Then you tell me, which saves more money?
How they are changing the gas from 410 to 32? Any problem with 410? I find 410 inverter works badly in cooling, at least for my hitashi and Daikin. My old 1.5 panasonic inverter works perfectly well, and all my 3 2.5hp new panasonic inverter, 1.5hp hitachi, 2.0hp Daikin inverter works badly. So.. something wrong with the new "inverter" aircon nowadays..
If i am you, i will compare the a) blower fan diameter which determines the internal noise in db b) the dimension of compressor which determines the efficiency of energy / cooling capability. The larger they are, the better. And also the pipe diameter. Get larger unit than you need to reduce dryness to nose and eyes, and save money. And learn how to clean your own aircon, for both internal and external units. It is damn easy where i clean weekly myself.
Before you buy,
a) What is your room size in ft.
b) Is your room facing west ?
c) How many side of walls have windows?
d) How many ppl and "hot" machine will usually stay in the room?
e) What is the temperature of your room now, and what temperature you are targetting?
f) How fast you want to bring down the targetted temperature?
g) Do you think moisture content of your room is critical to you? any nose problem? eye dryness?The way i calculate the HP needs for me. Assume f=1.4 for extreme hot west room
HP = [65( 1.4 X size in ft + 100 X (number of ppl and hot machines) /] 8000 = ?hp.
f=1.4 will enable you to cool ur room 10 degree down within 1/2 - 1 hour time
f=0.6 for room that is shaded and facing east with no expose of sunlight
f=2.0 for kitchen, set n= 2 X number of kitchen devices that produce heat
f=0.9 for south and north facing.
these calculation is for 410 inverter only. Non-inverter please use normal calculation.
etc etc..
As for point (g) as highlighted above, I believe ANY air-cond from any brand will contribute to nose(sinus), throat and/or eye dryness symptom with the severity depending on the health or condition of the person. What action do your recommend since you mentioned "before you buy"? The best is to not use air-cond at all as it reduces or removes humidity in the room which is the main culprit to some of the issues that you mentioned.
Oct 16 2017, 08:46 AM
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