Here it's a mandatory disclosure item and it's important enough that you can filter by it on the real estate listing sites. More so because now house insulation comes with a mandatory 'bat study' requirement which is absolutely bonkers. So houses that are already energy efficient are at a premium.
What also helps is that the whole system runs without any user intervention. The manual is mostly aimed at people hired to add stuff at some point in the future, or in case something breaks.
Energy efficiency was my main goal too but no one gives a fuck about that here either so it’s a different market.