How can combination cylinders get away with just 20 or 40 litres as supply to hot water in the cylinder, and yet cold/hot cisterns in the roof space have to be 230 litres and more??
So if I have a combination cylinder, I get away with 20 litres. But if I put a separate tank just a foot above it in the airing cupboard, it needs to be bigger than the cylinder!
I know I am missing something! Tell me what.
So if I have a combination cylinder, I get away with 20 litres. But if I put a separate tank just a foot above it in the airing cupboard, it needs to be bigger than the cylinder!
I know I am missing something! Tell me what.