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Economy 9 - peak and off-peak water heater

Last post Fri, May 02 2008, 6:44 AM by lebesset. 1 replies.
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  •  Thu, May 01 2008, 11:04 PM

    Economy 9 - peak and off-peak water heater

    Hi all,

    Hope someone can help! I have economy 9 electricity so when my off-peak water heater is switched on the water is heated during the 9 off-peak hours. If I want to heat water any other time I use the boost switch (seperate to the off-peak switch).

    I want to switch off the 'off-peak' switch and use only the boost so that I can have the hot water heating for fewer than the 9 hours per 24 hour period. If I use the boost switch during the off-peak hours will this still use the cheap economy 9 rate? Or do you only get this cheap rate by using the 'off-peak' switch? In other words what initiates the off peak economy rate - is it purely the time of day or is it specific switches?

    Am very confused - would appreciate any help, even if it's just suggesting who I could ask. Thanks!

    • Post Points: 20
  •  Fri, May 02 2008, 6:44 AM

    Re: Economy 9 - peak and off-peak water heater

    strange question in several ways

    if you want to just use the boost off peak , why not try switching it on during this period and look at the meter to see which one it shows up on [ it will , of course , could up as off peak ] ; I presume you have a 2 element tank , but using both for a few minutes at the beginning of the off peak period [ so the water needs heating ] , won't be a problem

    why do you want to increase your costs by doing this ? it is so much cheaper to heat off peak that , provided your tank is properly insulated , the small on -cost for maintaining a tank of water hot is negligible compared to the cost to heat water at peak prices ; I have installed one of the modern factory insulated tanks , can heat the water , and it is still hot enough to have a nice hot shower after 2 days ....if I am going away have to remember to turn off the water heating a couple of days in advance

    • Post Points: 5