ᐅ New Construction – Which Smart Home System?

Created on: 14 Feb 2020 11:38
B
bonkers223
Hello everyone,

I am finally planning to build our own house with my family. I don’t want to do without a smart system and have already done some research.

Loxone is basically off the table for me because it mainly relies on its proprietary system and products.

Of course, I have repeatedly come back to KNX (as here in the forum as well). However, I am not entirely happy with it because I don’t want to have to call a programmer every time I want to make a change; I also don’t really want to buy the ETS license. Additionally, I want to integrate and network fingerprint scanners, Sonos, and a heat pump, but I haven’t fully figured out how to do this with KNX.

The house basically has two floors with an open-plan kitchen/living area, entrance hall, utility room, bathrooms, children’s rooms, bedroom, garden, and so on.

The following systems should be connected:
- Lighting (some dimmable)
- External blinds / weather station
- Underfloor heating
- Heat pump
- Music system (Sonos)
- Fingerprint access
- Video intercom
- Some switched power outlets
- Photovoltaic system

Since I am technically fairly knowledgeable, I want to be able to manage, adjust, and optimize my system myself in the end.

Does anyone have good input here? Or already experience with Loxone, KNX, or others?

Thanks and best regards,
Stefan
Patricck20 Feb 2020 07:09
Expensive cables? Expensive actuators? Ugly switches? Interfaces discontinued?

No idea, I wouldn’t know any.

Loxone has the tree cable, which is recommended but not mandatory.

Whether the switches are ugly is debatable; what I find ugly is the switch panel on the wall...
Mycraft20 Feb 2020 07:30
Well, back to work then and close those knowledge gaps.
Patricck20 Feb 2020 07:50
As I said, I’m not aware of anything. The cables are useful but not mandatory; KNX cables or network cables also work, especially for spots that require a 24-volt power supply.

And I’m not aware of which interfaces might no longer be available?
Mycraft20 Feb 2020 08:44
Loxone has decided to remove the KNX interface previously included in the Miniserver and instead installed a Tree connection that supports up to 50 devices.

For those switching to the Miniserver v2 who still want to use KNX, Loxone recommends upgrading to the KNX extension, which is currently priced at 584.41 € (approximately ), making it relatively expensive. Additionally, it only supports "up to 500 KNX group addresses," which is quite limited, since many more complex KNX components can individually require dozens of group addresses.

Overall, Loxone is simply too expensive.

Simple example:

4-channel dimmer Loxone: 471.78 € (channel price ~ 117.95 €)
4-channel dimmer KNX: 258.59 € (channel price ~ 64.65 €)

14x actuator Loxone: 355.81 € (channel price ~ 25.42 €)
20x actuator KNX: 348.15 € (channel price ~ 17.41 €)
Patricck20 Feb 2020 09:34
So what?

It is still possible, and Tree makes more sense than integrating a KNX interface for just a few users, which was never truly certified anyway.

For KNX, I need switches and temperature sensors—am I actually cheaper than using a Tree Touch? For lights, I need actuators plus the lamp—am I really saving money compared to RGBW spots?

If I install Loxone, I basically don’t need KNX.

But I don’t really know of any smart home system that includes KNX, except maybe Comexio.

As mentioned, KNX makes sense for offices or commercial buildings. For private homes, why?

But everyone has to plan for themselves.
Patricck20 Feb 2020 09:42
You can look at it in different ways. KNX certainly has advantages, but for private individuals who are not familiar with ETS, they need a programmer for every little thing.