bluemonkey
Well-known member
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my ele at night is 6p on the eco 7 thinga 3kw immersion heater uses 3kw an hour, so for every hour its on it uses 37.5p that's if you electric rate is 12.5p which is average price. so if u turn it on at 11pm and turn it off at 6am(guessing) that uses £2.67 a night.