Please do the math how you get RM100++ vs RM30++, you need to have proof of claim before putting the number. Even Panasonic say is 30%, but you get 70%.

Even at 30%, that is optimum level, it may not even hit that rate fro difference usage environment. I am a regular A/C user before and my bill does not even go RM 100++ for one A/C. And now with Inverter, the difference is only like rm 10+- per month.
http://panasonic.asia/ecoideas/ecoproducts...onditioner.html

    Reduces energy consumption by up to 30%*1.

    *1 Comparison of 1.5HP Inverter model with ECONAVI Dual Sensor ON and OFF (Cooling).

    <ECONAVI Dual Sensor ON Outside temperature: 35°C/24°C>
    Remote setting temperature: 25°C with Fan Speed (High)
    Vertical Airflow direction: Auto, Horizontal Airflow Direction: ECONAVI Mode
    Setting temperature goes up 1°C controlled by ECONAVI activity level
    <ECONAVI Dual Sensor OFF Outside temperature: 35°C/24°C>
    Remote setting temperature: 25°C with Fan Speed (High)
    Vertical Airflow direction: Auto, Horizontal Airflow Direction: Front
    Total power consumption amount are measured for 1 hour in stable condition
    At Panasonic Amenity Room (size:16.2m2)
    This is the maximum energy saving value, and the effect differs according to conditions in installation and usag

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Added on February 7, 2012, 4:34 pmAnd the most if possible is 50% from Panasonic Malaysia, which need to set temperature to 25c, for lower temperature users saving will be much lesser.
Intelligent Inverter technology provides a high-precision method of maintaining the room set temperature by varying the rotation speed of the compressor; thus giving you energy savings of up to 50%.
*Comparison of 1.5HP Inverter model and 1.5HP Non-Inverter model

Outside temperature: 35ºC/24ºC
Remote setting temperature: 25ºC with Fan speed (High)
Vertical Airflow direction: Auto
Horizontal Airflow direction: Front

Total power consumption amount are measured for 8 hours from starting.
At Panasonic Amenity Room (size:16.6m²)
This is the maximum energy saving value, and the effect differs according to conditions in installation and usage.

Cause the non-inverter for salesman can earn better commission.

Once you installed and the rest you will facing the trouble on monthly bill for 1hp at Rm100++ or higher usage.

The inverter only take your bill around Rm30++ for fews monthly later your installed fee and extra cost for inverter to be reback already.

Cause the non-inverter for salesman can earn better commission.

Once you installed and the rest you will facing the trouble on monthly bill for 1hp at Rm100++ or higher usage.

The inverter only take your bill around Rm30++ for fews monthly later your installed fee and extra cost for inverter to be reback already.

woohoo, using inverter can result bill from RM100 to Rm30, this is first time I heard.

Even inverter air-cond manufacturers don't dare to claim it...

I share a house with a few people, and lately I've been thinking of getting an aircond. My problem is that we share the electric bill. How much extra should I offer to pay if that's the case? General usage is maybe 6-8 hours a night, probably getting a 1.5hp inverter type.

Yes my house using all the inverter + untility at only <Rm200 per mths.

Cause from mon - fri is no ppl around.

But at night is switch on 2 Rooms x 1hp for inverter,
(total usage for 10 hrs x 30 day)

My living hall for 2.5hp inverter also is switch on from night time 3hrs x 5 days + sat & sun for operates from 9am - 12am.

Thanks

Just around Rm50 per mths of the room.
Sould like wroth than 1hp for non-inverter.

By your analogy (RM100 to RM30), before you switched into inverter, your bill must be > RM500. 

What so special about RM200?
An office with all non-inverter air-cond on 2 rooms x 1hp power for 9 hours + 1.5hp on room for 6 days a week for 3~4 hours average, also registered less than RM200.

Office is using Phase 3 current.

The cost should be much higher than your house usage.

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Added on February 7, 2012, 5:45 pmYes my previous non-inverter 2hp panasonic just switch on 8hrs x 3 days per months the bill is cost be more than Rm150 & still not include the rest.

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Added on February 7, 2012, 5:48 pmDon't one to explain so much here,
Just you find out for your own

If your house can achieved on less than Rm200 per months of total bill an using the non-inverter aircon..
All to be switch on 8 hours x 30 days for 1hp x 3 + 2.5hp, just go and try the result is how much per month of fully non-inverter Aircon & set to 23C.

For rainy day, setting 25c is actually wasting energy. Why because outside temperature can be lower than 25c.

For much saving, get a ceiling ventilation, and switch it on during rainy day. This will suck in fresh and cooling air. Much more saving.

Assume 1hp = 1kw, 2.5hp =2.5kw
Monthly running bill = (3kw x 8 x 30) + (2.5 x 8 x 3) = 720 + 60 = 780 Kw / month * 0.40 (using 40 cent per watt) = RM 312

If run for 24 months = 312 x 24 + 4563 = RM 12051.00
For Inverter
3x 1hp, + 1x 2.5hp
Total investment = 6503

Assume 1hp = 1kw, 2.5hp =2.5kw 
Monthly running bill = (3kw x 8 x 30) + (2.5 x 8 x 3) = 720 + 60 = 780 Kw / month * 0.40 (using 40 cent per watt) = RM 312
(Say 30% saving based on Panasonic website) = RM 312 - 30% = 218.4

If run for 24 months = 218.4 x 24 + 6503 = RM 11744.6
So the saving for 24 months is 306.4

Here some of the things to consider
- Inverter piping are more expensive to install,
- Don't forget, this is as per claim by manufacture, at maximum saving. Which when you set temperature to 23c the saving may not be that much.


So the real saving is maybe after >30 months

I have 1HP non-inverter Panasonic aircond, use in 10' x 17' room, turn on 8 hours and set to 26 degree, it consumes around 5-6KW
I have another 1HP Hitachi inverter aircond, use in 12' x 18', turn on 8 hours and set to 25 degree, it consumes around 2-3KW

so my Hitachi inverter aircon can really save around 50% which fit Hitachi claim that able to save up to 56%.

Imaging I turn on aircond daily for 8 hours, which use 5.5KW x 365 (non-inverter) = 2007.5 for a year, by using inverter, it can save 50% which is 1003KW which translate to around 1003 x RM0.3 = RM301, hence I can save RM301 per year per aircond, within two years, my ROI is RM600 which offset the premium price, and the rest of the years, I'm keep saving money which translate to lower cost of ownership.

For rainy day, setting 25c is actually wasting energy. Why because outside temperature can be lower than 25c.

For much saving, get a ceiling ventilation, and switch it on during rainy day. This will suck in fresh and cooling air. Much more saving.

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Added on February 7, 2012, 7:04 pmAlso my calculation per your reply earlier.

899 1hp
1268 1hp inverter
2199 2.5hp
2699 2.5hp
So let say using http://www.jintexelectronics.com/ pricing, and say all compressor run all the time for easy calculation.
1HP Panasonic standard non inverter = 788
2.5HP Panasonic non inverter = 2199

1HP Panasonic Inverter = 1268
2.5HP Panasonic Inverter = 2699
For Non Inverter:
3x 1hp, + 1x 2.5hp
Total investment = 4563

Assume 1hp = 1kw, 2.5hp =2.5kw
Monthly running bill = (3kw x 8 x 30) + (2.5 x 8 x 3) = 720 + 60 = 780 Kw / month * 0.40 (using 40 cent per watt) = RM 312

If run for 24 months = 312 x 24 + 4563 = RM 12051.00
For Inverter
3x 1hp, + 1x 2.5hp
Total investment = 6503

Assume 1hp = 1kw, 2.5hp =2.5kw 
Monthly running bill = (3kw x 8 x 30) + (2.5 x 8 x 3) = 720 + 60 = 780 Kw / month * 0.40 (using 40 cent per watt) = RM 312
(Say 30% saving based on Panasonic website) = RM 312 - 30% = 218.4

If run for 24 months = 218.4 x 24 + 6503 = RM 11744.6
So the saving for 24 months is 306.4

Here some of the things to consider
- Inverter piping are more expensive to install,
- Don't forget, this is as per claim by manufacture, at maximum saving. Which when you set temperature to 23c the saving may not be that much.


So the real saving is maybe after >30 months