It's rather like, going to a garage, and asking them to change the engine oil. They do as you ask, but would you also expect them to check the water, the wheels, and the tyres - maybe give the car a full service, when all you had ordered was an oil change?
Recapping a bit, I bought a new Baxi boiler, to replace an old Vokera boiler. The installer had visited and seen the property / setup in advance, and quoted for Baxi supply and installation, relocating the boiler approx 60cm to the left within the same room, and adding some Hive TRVs to the setup.
Summarizing some of the discoveries in the thread and things I knew already before starting the thread:
The installer spent basically no time checking anything, once last pipe was connected, they were off.
Note they did not complete a commissioning checklist.
The heating did not, post install, work as well as it had before.
That caused me to complain to the installer.
They ignored my complaint.
As I had no confidence the install was done correctly, I telephoned Gas Safe for advice, who sent an inspector
The boiler installation failed the Gas Safe inspection, 12 different defects
We now discover the Flow/Return had been swapped around, probably inadvertently (I dont suggest it was deliberate)
In all TBOE connected cases, the Flow is now at the bottom and the Return is now at the top.
There was no filter installed, which you insist is a requirement.
The installer says, this very week, contrary to multiple posts in this thread, and Baxi support, that Flow/Return cant be wrong way round, as it does not matter at all which way around it is now, or ever was. I think direct quote is "it can't matter mate, it's just a loop".
I dont want to translate that into a specific car problem, but "the job", for which I paid 3500 UKP, isn't really equivalent to an oil change, is it?
I certainly 100% agree that I didn’t know enough at the start of the process to be able to “ensure you get everything you want done: specify the work, know what they are doing, and watch that they do it”. That said, if that is the expected baseline, IMHO it paints a rather bleak picture of what should be a professional standard for accredited tradesmen. This is certainly not your fault, or anyone on the thread, and I do appreciate your and others candor and directness. That said, as I mentioned earlier in the thread — perhaps because this is a DIY forum, and DIYers surely know more than average about the stuff they DIY — there is a hint of victim-blaming here, which I find a little but jarring.
I mentioned IT not as a direct comparison - setting up say a LAMP stack, is a very different task to installing a boiler, fitting a kitchen, or changing a gearbox, which are all different from each other as well. But maybe, and maybe not, some
human factors do translate - over-confidence, rushing things, not properly testing? I had to look up IIMBSB and did get a truly definitive answer, but seems close to SNAFU - situation normal, all f*****d up ?