Originally Posted by
FenceFurniture
They want to be able to see the installation site so they can calculate how much the "heavily subsidised" installation will be, and they want to know what they will be taking away for recycling. They also want to see your circuit board.
HP HWS can be smaller capacity than what it is replacing. It starts heating up water as soon as you turn the tap on, so that, e.g. a 215 litre tank can give you 300, maybe 400 litres a day if necessary. You have 215 litres before you hit the water that is still being heated, and IIRC they heat about 60 litres per hour. In my case, because I am using Amber Electricity at wholesale prices, I will aim to have showers at around 11am to 2pm when sparks are usually super-cheap. It will also mean that I will not have Controlled Load needs, and will save that daily connection fee.
Perhaps you could consider relocating the HP and Tank somewhere else outside (hot water pipes and circuits permitting).