Hello
Are there good retrofit smart home systems available?
We bought a semi-detached house as a new build from a developer.
The electrician declined to work with KNX and said he is not familiar with it and won’t do it.
My question is: Are there good retrofit options for smart home systems that don’t require opening up the walls (that is not an option)?
Which systems would you recommend?
Functions:
Light control
Window sensors (preferably invisible)
Shutter control
Music control
Video doorbell
It should definitely be possible to create scenes and rules.
I’m also open to other suggestions for useful functions I may not have thought of yet.
Are there good retrofit smart home systems available?
We bought a semi-detached house as a new build from a developer.
The electrician declined to work with KNX and said he is not familiar with it and won’t do it.
My question is: Are there good retrofit options for smart home systems that don’t require opening up the walls (that is not an option)?
Which systems would you recommend?
Functions:
Light control
Window sensors (preferably invisible)
Shutter control
Music control
Video doorbell
It should definitely be possible to create scenes and rules.
I’m also open to other suggestions for useful functions I may not have thought of yet.
D
daniel03198 Aug 2021 13:48untergasse43 schrieb:
You can also achieve individual room control by measuring the temperature, for example with a touch sensor that is already in place, and letting the software manage the regulation. It then controls the valves. This way, you don’t have to install unattractive thermostats in every room, and you won’t have them on the wall if you later proceed with proper hydraulic balancing 🙂 I leave the hydraulic balancing to my heating technician, who is paid for that.
However, I still don’t quite understand what you mean?
untergasse438 Aug 2021 14:00daniel0319 schrieb:
I leave the hydraulic balancing to my heating technician; that’s what they’re paid for.Well, in practice, you don’t really need a control system at all, and certainly no thermostats in the rooms, except for KfW requirements. A better approach is to measure the actual temperature with a touch sensor (or motion detectors, etc.), set the target temperature through the visualization interface, and let the heating actuator handle the rest—no ugly thermostats with dials on the wall, and the ERR specification is met. Whether you use this system permanently or disable the control in the visualization at some point is up to you. Whether something like this works with a DIY smart home setup from a dozen different manufacturers remains to be seen.
untergasse43 schrieb:
You can also achieve individual room control by measuring the temperature with a push-button sensor that is already installed, and letting the software handle the regulation. It then controls the valves. This way, you don’t have to install unattractive thermostats in every room and won’t have them on the walls if you eventually follow the path of proper hydraulic balancing 🙂Yes, that’s exactly how we did it. It works great. The sensor only shows the actual temperature. The setpoint on the sensor is set as high as possible. So all the valves are always fully open. Thanks to the hydraulic balancing, the whole house is about 22-23°C (72-73°F), and it can’t get any warmer because the underfloor heating system is designed that way.
If we wanted it warmer, we’d have to adjust the heating system itself.
D
daniel03198 Aug 2021 16:47Tarnari schrieb:
Yes, that's exactly how we did it. It works really well. The switch only shows the actual temperature. The target temperature on the switch is set as high as possible. So all valves are always fully open.
Thanks to the hydraulic balancing, we have about 22-23°C (72-73°F) everywhere in the house, and it can’t get any warmer because the underfloor heating is designed that way.
If we wanted it warmer, we would have to adjust the heating system itself. Sure, you might like that, but in the bedroom or laundry room, I don’t need or want it.
Personally, I feel better if I can regulate the temperature, even though I know it doesn't change quickly with underfloor heating. We have underfloor heating in our current apartment, so I’m aware of that.
Okay, so let’s say smart underfloor heating: pointless.
What about lighting and blinds? I was thinking about actuators like Shelly or Sonoff behind the switches (we are installing deep wall boxes throughout the house).
By the way, does it make sense to make the ventilation system smart?
daniel0319 schrieb:
Sure, you might like that, but I don’t need or want it in the bedroom or laundry room.In a new house, the temperature difference between the living area and the bedroom won’t be significant. There are only a few degrees difference, regardless of whether you turn the heating way down in the bedroom.
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