This is impressive even if he failed to flush the existing system &
fill out the benchmark log book (to vaildate the guarantee).

The benchmark was filled in. The empties were left behind. (X100 and X300, I
think, but not entirely sure).

The pipework was faultless and very neat.

To watch him work was breathtaking. I've never seen someone who can cut,
flux and solder a pipe in the few seconds that he took. He claimed he
personally had done the most installs on the Big Green Boiler scheme in the
country. I believed him.

Christian.