Heat Greek vs Skill Builder mainly heat pump, but some reference to condensing gas boilers.

[ericmark]

I watched in all about 5 videos, the first basic slated the heat pump, but by the end, it was shown it was saving money, must have been around 3 hours of video, but one thing the heat geek did say in passing, was the gas boiler can be set up better as well.

So he was in the main talking about the circulating water temperature, the lower it is, the more latent heat a gas boiler can extract, and the efficiency of the heat pump also increases, and in both cases on/off control is bad. And he explained why weather compensation was so important.

Since the guy had fitted massive triple radiators in his previous attempts, the circulating water temperature could be very low, but the idea of leaving all internal doors open, and heating all rooms 24/7 seems a little daft to me. However, the analogue control seems good. Yet, I would think 90% of homes have on/off controls.

My late parents fitted a new system, none of the old pipes or radiators used. It was a modulating boiler, which I in the end, got to work well, but as installed no TRV in the hall, the thermostat

used a mark/space ratio to stop over shooting, and the power shower was connected to a combi-boiler, all the lock shield valves were left wide open, it was in a nutshell a very poor installation, where the installer was aiming at the vulnerable to grab government grants. Using in the main semi-skilled labour, who would simply do as they were told, even if wrong.

However, when I corrected the errors, I realised the big problem was the Worcester Bosch boiler had no option to install an electrical analogue control, the only way to control it was the return water temperature, and it took a Winter living in the house to adjust the lock shield valves, so each room sat at the selected temperature all day, and the wall thermostats only job was to turn off heating when we had warm weather.

So I can see the point in having installers who are heat geek trained, as clearly many are not installing and commissioning the installation correctly. And both the heat geek and the Skill Builder guy seemed to agree, the problem is we have a whole new system, but a complete lack of re-training in how to instal these new systems.

I am only an electrician, I have the lowest of low degree, so I would ask those who have trained as heating engineers, what sort of degree is required to ply their trade, and are they too many non engineers (those with only level 3 qualifications) passing themselves off as engineers, who work on the idea, this is the way we have always piped and controlled central heating I see no reason to change.

The last video recaps all which had happened, they said 50% of plumbers are over 50 and not interested in retraining, I wonder how true.