QUOTE(sHsIkuA @ Jul 6 2012, 04:33 PM)
Yeah been using fan for few weeks already. I am not really that keen on using aircon unless it's a very hot day. I checked with him he said at 23C like that only.
Still, the current reading from previous bill is already at 500+ kwh (date of last bill was on 12 June)
First you got to make sure the last reading (12 June) was an estimate or actual (normal reading).
2nd, is your house mate on the aircond during weekend to confirm the high 700kwhr bill.
You measured the meter when no one at home(only fridge and routers were on) and it moved about 1-2 kwh (9-10 hours). This shows nothing abnormal with the meter but still it is on the high side as fridge if no one opens the door it should be "off" most time than "on" and fridge takes only 300watt or less for a small fridge I assume since only 2 of you and nothing much in there if not making ice.
Same time you said "Yesterday I recorded it used 18kwh just in one night, I don't even on my aircon (my housemate was using his)." A 1hp aircond is around 800watt (or 1kw if old one). Assuming it is 10 hrs it should not consume 18kwhr even if it is on all the times even with your fan, fridge and some lighting or router on. It should be 10kwhr over 10 hrs.
It is difficult to judge unless you monitor and record reading everyday. To cut short first you got to check if the aircond of your housemate is not at its optimal performance. That is to say the air cond keep on even when it is set to 23. It could be due to filter clogged, lack of gas or outdoor unit is block or fan running slowly. To know that is to on the aircond shut all windows and doors and after an hour go in the room and see if the aircond will off and on and off and on. If it on longer than off then the aircond need service or be replaced.
Alternatively you sleep in yur hoursemate room and he goes to your room and you on fan and he use your airocnd and you compare the meter reading if it is anywhere hitting 18kwhr, since your mate cannot sleep without aircond.
After confirming the aircond, if it hits much way below 18kwhr then it is his airocnd that is the source of the problem. and if it still hit 18kwhr you then have to get yourself a watt meter and do like I said before to confirm the if the meter is faulty.
One other thing, it could be the aircond and the meter, both.
I got a watt meter, where you stay or work?
This post has been edited by stevie8: Jul 6 2012, 11:20 PM 
Jan 4 2012, 02:27 PM, updated 14y ago
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guess their system still show old meter, and want to charge me 1000 units. I send them photo, never want to believe. 
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