ᐅ Vestaxx window heating – experiences?

Hello everyone,
My husband and I attended a home exhibition today featuring a local timber house builder (Schleswig-Holstein) and there we learned about the Vestaxx window heating system.
Is there anyone here who has experience with the Vestaxx window heating?
At first, it sounds unusual to have the heating integrated into the windows. For the triple-glazed windows, a nanotechnology-based, invisible layer is applied to the inner surface of the innermost pane, which warms the glass up to 40 degrees Celsius (104°F) via infrared and heats the room. The warmth actually felt very comfortable, and the windows were completely cold on the outside (today’s temperature was below 10 degrees Celsius (50°F)). Allegedly, the Vestaxx window heating transfers 92% of its heat to the room, and the Technical University of Berlin has tested this Vestaxx window heating system and rated it positively. It appears to have been on the market only recently.
Overall, I find this quite interesting. It is significantly cheaper than other heating systems, allows individual control of each room, and unlike underfloor heating, it is very responsive.
Of course, this only makes sense in a low-energy house (the timber builder mainly constructs 40+ standard homes), as the system runs on electricity. In that case, the Vestaxx window heating is said to consume very little power.
This is my impression from the expo; of course, they want to sell the system.
What are your experiences with Vestaxx? Have you heard of this system before? Could it be an alternative to conventional heating? Does it have a future?

This Vestaxx window heater might make sense in small bathrooms.

Otherwise, a heat pump is of course much more efficient.

That probably only makes sense for large windows. At 40°C (104°F), a normally sized window is likely not sufficient for an average room.

I have no experience with the Vestaxx window heating system. I would be more concerned about what happens if the heating in the window breaks. Would that mean you need a new window? But you don’t have to reinvent everything.

@EinHausfür5 I wasn’t familiar with that until now; the report about it is quite interesting. That doesn’t mean I necessarily want to do it, but I’m always interested in new developments. Of course, there are various other options for a heating system that suits you, and you should especially find out what is important to you when it comes to heating. However, you should also make sure to get reliable information outside of this forum.

For example, we didn’t want a water-based underfloor heating system or screed, and preferred stylish radiators instead. However, we don’t have gas supply available.

Durran schrieb:

but you don’t have to reinvent everything

What’s wrong with trying something new?

Durran schrieb:

What happens if the heating element in the window breaks? Will you then have to replace the entire window?

Without wanting to judge this type of heating, what happens if the water-based underfloor heating develops a leak or the heat pump malfunctions, and so on?

200 watts per square meter of glass. With 6 hours of heating per day and an electricity price of 30 cents per kWh, that results in 36 cents heating cost. With a correspondingly low heat demand (e.g., 2 kW), that amounts to €3.60 per day or €108 per month.
Therefore, it is expensive during operation.
I have no experience with Vestaxx window heating regarding purchase costs and lifespan.
Drawback: For hot water, you need an additional device, ideally a domestic hot water heat pump. This reduces the advantage you might have had in the initial investment.
You will need screed and insulation underneath anyway.

Benutzer200 schrieb:

You will need insulation and screed underneath anyway.

Insulation, yes; screed, no.
In our case, the domestic hot water heat pump has been running properly for two weeks now. Depending on the situation, I can also imagine an electric instantaneous water heater. I recently saw that with some acquaintances, but as I said, these things definitely depend on individual needs or usage patterns.