Comparison of geothermal heat pump with LWW pump

The air-to-water heat pump can of course provide cooling if the manufacturer enables it. An air conditioner is nothing other than an air-to-water heat pump without [Fußbodenheizung].

The screed does not emit cold but absorbs heat and transports it to the heating system.
There, the heat is transferred to the medium (brine or air) via the heat exchanger.

which only works if the medium is colder than the heat from the house. Otherwise, we are talking about active cooling.
But: air is known to be a poor heat storage medium. If I place a heat conductor on a 60°C warm steel, it quickly becomes 60° warm; if I blow 60° warm air onto it, it takes a long time. So how does the room efficiently transfer heat to the floor?

which only works if the medium is colder than the heat from the house. Otherwise, we are talking about active cooling.

Yes, the medium must be colder than the environment to be cooled, and no, it is not automatically actively cooled just because the mentioned medium is colder.

Yes, the medium must be colder than the environment to be cooled, and no, it is not automatically actively cooled just because the mentioned medium is colder.

It was meant the other way around: if the medium is warmer than the air inside the house, active cooling is necessary. Passive cooling is then not possible. And with an air-water heat pump in summer, that should always be the case, unless the oven is also on.

Brine = Passive except for the energy for the pump
Air-water heat pump = Active via reversal

Brine = Passive except for the energy for the pump
Air-water heat pump = Active via reverse cycle

And this is what my original question is aimed at: How well does passive cooling work? For example, can you feel an effect in the height of summer?