It's fine in that it captures enough to be usable as a fixed asset rating. How that's used beyond the original intention is where the issues tend to be. It wasn't intended to be an accurate estimate of energy consumption in all cases when it was developed.
I can see its value in some circumstances. But it needs to capture enough basic info in the first instance. It would be very difficult to account for lots of things that may have an impact though. As a fixed asset rating it's fine. As anything more, it often won't be.
Orientation is captured here too but that's not to say its going to capture actual energy performance. Two identical houses could have a different number of people living in them who use the house differently (e.g. WFH/not). But it wasn't supposed to. And it shouldn't have all policies based on it
Capturing some of the major differences between the EPC here in Ireland and the one in the UK in terms of what's accounted for. Not accounting for ventilation losses is bananas. Overall, it's being pitched as something it was never supposed to be and shouldn't be used for.
That's what I'm saying. Displacement of the gas that was in the pain with water vapour. If it wasn't argon/xenon and the seal was knackered, you'd have condensation too.
It is because the seal has gone but what causes the condensation isn't the loss of xenon/argon as much as it is the ingress of air from outside. I probably should have been a little clearer
The xenon/argon leakage isn't the real issue. It's cold air getting into the gap between the panes so the warm air hitting the inner pane is hitting a colder surface and condensing. When the EPC is used for everything, and inappropriately so, people expect it to do more than it does or ever could
Completely get that. I don't think it has ever really been communicated properly though would the majority listen if it went into the detail on default and non-default values? Renters are completely fucked over. Treading a fine line between asking for basic fixes and not triggering a rent increase
Here, there are default values based on age profiles. If you don't have documentation to support the use of non-default values, then you have to use default values. Here, if you were audited, as an assessor, and had entered values without supporting evidence,you get penalty points