Single-room control with cooling function (Is underfloor heating with LWWP sensible?)

Hello everyone,
our sanitation guy wants to know if we want a cooling function for the underfloor heating's individual room control.
My husband doesn't want a cold floor, I personally hate heat in the house like the plague - we are wondering how much this cooling function really brings, whether the floor really feels unpleasantly cold, and whether the investment (not really worth mentioning - 900€) is worthwhile? The plan is to fully glue 10mm solid parquet (vertical lamella) in the living areas.
Looking forward to opinions.

Depends....

We also have passive cooling and find it great. Tiles are unpleasantly cold, meaning in summer I make circles in the bathroom. The rest of the house has parquet flooring, which is very comfortable and effective. Of course, it’s not an air conditioner, but it’s ecological and practically free to operate!

There are divided opinions about passive cooling since no additional dehumidification takes place. However, I don’t know anyone who has passive cooling and is dissatisfied with it. We use it almost continuously in summer because we find it very pleasant and it keeps the temperature down.

By the way, I don’t understand the connection with [Einzelraumregelung]... With or without, the heat pump can cool, it can cool.

By the way, I don't understand the connection with the single-room control... Whether with or without, the heat pump can cool, it can cool

Thanks Tego. It was explained to me that it can do it in any case, but with the thermostats that are installed as standard, you can't use it. Hence the more expensive thermostats with cooling function as a feature. Has my general contractor told me a load of nonsense again?

But keep in mind, without proper shading, the cooling function of the underfloor heating will do you just as little good as the geothermal exchanger does for me. If you let the sun in through the windows unhindered, nothing really helps except for an air conditioner. Especially with a south-facing terrace, the shading must come from the outside.

Without knowing your heat pump: Cooling is generally possible without individual room control. Depending on the manufacturer, there may be special features that incur additional costs. The only really important thing is a dew point monitor if you don’t just cool very lightly and can ensure that.

In general: A heat pump is most sensibly operated with a good hydraulic balancing and completely without individual room control (equivalent to all thermostats set to max). However, the balancing for cooling is different; in my opinion, it is sufficient in summer to simply disconnect a few rooms, e.g. bathroom and north-facing rooms, and leave the others open. Special room thermostats are not then necessary. We have no thermostats and simply run all rooms during rare cooling. If we cooled regularly, I would install a thermostat in a few rooms to be able to comfortably exclude them from cooling so that "more cold" reaches the more relevant rooms.

Ask the heating technician if cooling also works without the IRR.

As for cooling comfort, you have to judge that yourselves; with parquet it is certainly not too uncomfortable. I would want passive cooling because technically that is brilliant. Cooling via heat pump does not work miracles. External shading, preferably automated, brings much more.

First of all, thanks to everyone. So we are getting an air-to-water heat pump from Rotex – if I have understood the whole thing correctly, only active cooling is possible with it, right? Since we don't have ground or geothermal energy. Everything that has tiles (so bathrooms and hallway) I would not have actively cooled, but the living rooms with the wooden floor I would. Shading is the be-all and end-all anyway and always takes precedence over cooling. We don't have a south side (semi-detached house party wall), but we have fully planned to have venetian blinds on the west side. I actually only want to use the cooling in summers like the last one, when otherwise you can't get a restful sleep at night. I think then we would be quite well equipped with the venetian blinds, controlled residential ventilation with summer bypass, and optionally the cooling function...