Hi I have got a friend who has just moved into rented accommodation. The property has no gas, instead water is heated via an immersion tank. It seems to have two elements (top and bottom of tank) with a switch for each. One is marked as "off-peak" the other as "water heater"? Could someone explain what each switch does, and explain the most efficient/comfortable way to use an immersion system?
I am guessing the "off-peak" is for when low amounts of hot water are required as only one element is on, but is it cost effective to leave this on always, or still as and when?
Also, approx how long do they usual take to heat?
Thanks in advance sorry for all the questions.
I am guessing the "off-peak" is for when low amounts of hot water are required as only one element is on, but is it cost effective to leave this on always, or still as and when?
Also, approx how long do they usual take to heat?
Thanks in advance sorry for all the questions.