Fitted a new immersion heater - getting less hot water

[simes205]

Evening!
Had to replace our old immersion heater as our Switch head unit had failed.
I bought a replacement before removing the failed unit and going by model number of the previous unit I assumed I needed a 27" heater.

On removing the old unit I found it was probably either a 33" or 36" heater (it's in the bin now) but with a bend in it so as to fit in the tank.
Since I replaced this I'm getting half as much hot water as before.

I was under the impression that a 'longer' heaters advantage is that it heats the water quicker? Is this right?


I

 

[EliteHeat]

I was under the impression that a 'longer' heaters advantage is that it heats the water quicker? Is this right?

That and it heats up a greater volume of water. Cold water doesn't rise.

 

[simes205]

Cool, I thought that after a period of time the whole tank would have heated up but it makes perfect sense now. Better go and buy a longer heater.
Thanks.