On Tuesday, 30 April 2019 22:18:30 UTC+1, Fredxx wrote:
On 30/04/2019 22:02, ss wrote:
I am refurbishing the bathroom but getting a plumber to disconnect water
, I will then tile walls & floor remove sanitry ware and replace.
plumber has said that the only thing the loft water tank is feeding is
the cold water for the bathroom sink as I have a combi boiler (mains feed)
So, he is going to bypass the loft water tank and make it obsolete.
Does this sound the correct thing to do?

It is normal for mains to feed a wash basin.

The removal of the tank and its supply can only make your system more
reliable.

Combi boilers are more efficient in energy use than the traditional system of stored hot water.
There are no other benefits.
They are more expensive to install and maintain and less reliable.
They preclude solar hot water generation as storage is needed.
If you have an existing traditional system, probably best retained and maintained in the longer term.

In a few years combi-boilers will be illegal and obsolete, new legislation/technology is in the pipeline.
I expect existing installations won't be affected except maybe in respect of spare parts availability.