Hi

Just share my experience for my previous or now Aircon models.
My pass 7 years is using hitachi deluxe 10k btu model end up I change to panasonic deluxe mode 9k btu it is not cold at all for outdoor condenser is smaller than hitachi.
After installed 1 week I changed back to my 1st hitachi Aircon cause it is still working well it is abit regret to install panasonic.

Recently I looks at hitachi inverter model 1hp haha it is advance technology EER up to 13.4 wow but after install the problem was come not cold and must set to 23C and used 2 speed fan. So totally make me can't sleep at well.
I ask the hitachi service center how come like they said it is normal.
Also sent for requested sound dB-A they no feedback until now already 3 mths time.

my hitachi inverter 1hp relocated to 2nd bedroom and now the air swing motor got wave noise when I on the air swing.
Price at Rm1350 without install.

So I have no choice within 1 week to Mitsubishi electric starmex inverter MSY-GE10VA model to my master bedroom quietest at 19db and 1st fan speed at 21dB, outdoor condenssor same like my panasonic 2hp size.
Just set to 25C only can be cold for whole room.

By last 2 weeks I changed my Living hall Aircon from panasonic 2hp deluxe to Mitsubishi electric inverter MSY-GE24VA it is very quiet at 30dB and 25-27C for cooling whole living hall and outdoor sound quiet than non-inverter 1hp.
For air swing running not like just up and down continous,
it is can be up hold for while and down and for 2.5hp living hall unit the model can be horizontal swing to left and hold for while and right so it is very difference for quality of air.

Mitsubishi are easy clean model 1hp Rm1300 same with hitachi 2/7 warranty.
So now I have 2 units of hitachi DC inverter 1hp and front is using mitsubishi Starmex inverter 1hp & 2.5hp total 4 units

So I prefer to Mitsubishi electric easy clean inverter model it is best buy and no regret.

This post has been edited by kimsim: Dec 27 2010, 09:09 AM

Inverter work is very simple.
Outdoor condenser and indoor unit have both PCB board to control inside and outdoor temperature for maintain the same temp is without on off runing, cause if the temp. Is reached for compressor can be runs as slowly. For outdoor fan still will stop fo r while.
Event inside room just feel little bit warm and outdoor fan is runing indoor will be quicky to cool down.
So not need force the compressor is fixed at sane RPM to cooling down after reached compressor and fan will be stop for while indoor can hear the gas stop and runs again.
Fixed speed non-inverter model need more power to support the cooling to keep at same speed RPM and fan blower speed so when you near to the condenser blower it is very heat like hair dryer because compressor runing maybe need more cooling the alum. Coil. And compressor very easy to get vibration and noisy it is due to same speed without reduce the speed runing at same times.
So compared inverter and non-inverter will be short life. Must be change compressor mounting and fan bearing.
And also inverter compressor is used DC and fan motor together so can be save and long runs.
for example
Non-inverter model current input = 0.85kw x 8 hrs x 30 Days = 204kw
Inverter model 0.725kw after cold can be reduce to 0.241kw x 8 x 30d = 58kw only x 0.218 p/u. He he It is very cheap right.

---

Added on December 28, 2010, 8:02 am Inverter is same like car when drive faster without slow the car speed so it is without save the petro, if you drive slowly so your petro can runs longer distance.
It is what I can said.

This post has been edited by kimsim: Dec 28 2010, 08:02 AM

Ok let said your room temperature are 30C.
You switch on Aircon, your Aircon temperture is set to 25C .
So your Aircon operates may take how long to reached to temperature, for your setting?
After reached at 25C, so the compressor will be runing slow and it is call part load.
Inverter can keep to maintain the slow speed.
At same 25C until next morning.
Cause inverter work doest stop compressor and start on again so it is call waste your electricity.
When the starting for compressor may taken higher power to shoot up until your lighting will be tick.

It is not need to calculate one.
DC inverter compressor have their own input watt from 2.8(0.80-3.28)kw = 9550(2730-11190)BTU.
Input watt is 760(170-920)W showing here already mention the variable current input.
I'm get the panasonic S10MKH model.

This post has been edited by kimsim: Dec 28 2010, 09:30 AM

So far York and acson inverter models in Malaysia market both are used the daikin product technology.
Remote control is difference and without eye motion sensor and used 2nd grade of R410A compressor.

This post has been edited by kimsim: Dec 28 2010, 10:28 AM

it is an inverter air cond work like.

---

Added on December 30, 2010, 7:42 am
Hi All here regarding the non and inverter some clarified explanation.

Q&A question below.

Why non-inverter can be used more electricity?
Because non-inverter air cond compressor will taken more energy to cooling down the area and running non-stop speed without Low Med High speed.
 It is just only indoor FC to be sensor detect indoor actual room temperature in 29-30C from compressor may taken much time to reached your remote control setting in 25C. 
After the sensor has been detected. Only one thing compressor to be stopping and outdoor fan blower to be stop together.
Cause outdoor fan didn't have variable speed to follow indoor fan steps from your remote control setting.
So when you close to the outdoor condenser it is feel very hot air to blower out.
Totally outdoor condenser can be taken 97% of your switch on air cond electricity from 0 hour to turn off air cond.

Why inverter air cond can be cut into hall of energy usage?
Because inverter unit for all electronic device in outdoor condenser has built-in Mather board is call PCB board.
It is can be sensor detect the actual temperature from outside and indoor also.
All the compressor running speed and fan blower motor can be reduction speed it is depend indoor unit for your setting.
if set to 27C the compressor and fan only needed the low speed to be charge your energy.
How about compressor input watt?
It an can be from Low 100W to normal 725w to Max. Power 1150W.
It is also follow the BTU from 2.5-0.15-3.5Kw x 3412 = actual BTU.
Why inverter compressor can be so silent and quiet at all?
Cause inverter compressor is used the new DC motor inside and some have Twin rotary for reduce the vibration running. 
Compared to non-inverter compressor is still using the conventional AC motor inside. 
Here have some example to show the current input watt : non-inverter for normal 9000Btu type input watt per/hr = 0.9kw = 900Watt.
For inverter 9000Btu input watt = 760W it is already showing the energy saving.
But inverter can be save up to 70% of your room size and temperature setting 
To set 25C and also using R410A gas it is also help to faster cold down at only half and hour.
Then can be feel your room temperature is down. 
But for R22 gas still are same have to set in 23C and taken long hours time operates for cooling the room.   
For Inverter have Part load it is call half of energy saving running.
For example the compressor runs is from setting 25C temp. But is an using the gas R410a for help to top speed to reached at half and hour time for total is used normal rated : 760W after your room temperature is already 25C how the inverter works?
To be slow down the compressor speed and fan blower motor together or stop the fan motor. It is may only usage in low watt input at 150W only to keep maintain the same temperature until next morning. 
If the compressor on and off for non-inverter when the start up compressor runs may usage Max. power because have quick meet the same temperature in 25C after 25C and stop again.
So why it is very noisy.

Ok I just explain until here.
Hope you all can understand my poor English. Ha ha have a nice day!

---

Added on December 30, 2010, 10:58 amHere is showing some of non and inverter months usage and bills costs. Some tips here.

For example I compared the latest panasonic deluxe non inverter 1hp.
Input watt = 0.78kw x 3 units x 8 hrs x 30 days = Rm163.25 x 7 years = Rm13,713. 
Total installation cost for 3 units = Rm3600 + 13713 = Rm17313. Wow very costly.

For inverter units x 3 and cost for included installed Rm4500 looks like very expansive for 1 time paid out.
But in usage per day at 8 hrs.
Compared from panasonic deluxe inverter model.
Power input watt = 0.76x3 at 70% energy saving = 0.76kw x 8 x 30 = Rm40 per mths x 7 years = Rm3360 + units price 4500 total = Rm7860 maybe inverter is higher maintained cost at additional Rm1500. 
All cost = Rm9360. It is worth to buy inverter? For me yes I support inverter air cond all ways.



This post has been edited by kimsim: Dec 30 2010, 10:58 AM