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- Mar 22, 2011
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I have heater, but that's instant water heater for toilet. It only heats water when turn on, unlike those with storage tanks.Moi 2 room aircon 10pm to 5am (some nights only 1 room too) but living room never on also hit 550-600 range sia.
You got use heater? Moi see the biggest spike is the tank heater. Hit 1-1.5kwh
I also have a filtered water machine turned on 24/7.