ᐅ Smart home system for underfloor heating in a KfW40+ energy-efficient house?

Good morning dear forum,

We are currently building; the shell is almost complete, and the plan is to have a 165 sqm (1776 sq ft) city villa without a basement built to KfW40+ standard. Right now, we are going through the plumbing and electrical systems throughout the house, discussing various details.

There will be no wired smart home system. However, Homematic wireless will be used for the roller shutters and heating (only underfloor heating). Later, additional features could easily be added to this setup. Even a layperson like me can manage that… 🙂

Right now, I’m stuck on the heating control. Does controlling the underfloor heating manifold with electric actuators provide significant added value? Our heating installer has a clear opinion and says no! The idea is that properly setting up the underfloor heating once will yield a better annual performance factor than with smart home control. For me, that was basically a given.

By the way, the heating system will be an air-to-water heat pump. On the roof, there is a 12 kWp photovoltaic system with a 6.5 kWh battery storage. That might be relevant somehow.

What are your thoughts on this?
If you need more information, I’m happy to provide it.

Thank you very much for your feedback and best regards!

A heating engineer with real expertise is not something you come across every day…

I also know someone 😉 Ours said the same, and that's how we implemented it (although there is a placeholder error in the utility room)

Hello,
ERR refers to individual room control here, right? Good topic... There probably won’t be such large temperature differences between most rooms anymore. I’m finding it a bit difficult to make a decision here...

Regards!

Juicy1990 schrieb:

Our heating engineer has a clear opinion and says no! Just properly set up the underfloor heating once, and the annual performance factor will be better than with smart home systems.

Hire the heating engineer and lock him in your shell construction until the heating system is completed. Finding someone like this is rare! If he could also help you get an exemption from the ERR, that would be the icing on the cake. No one really needs the ERR – they cost money and are "eyesores" on the wall.

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