Experiences with central exhaust system without heat recovery

Hello everyone,

Does anyone have experience with a central exhaust system without heat recovery in a new building, kfw70 with underfloor heating without radiators? (This is important because you cannot place wall or window outlets above the radiators to mix the cold air immediately with warm air.) Is it recommended? If yes, what should you pay attention to? Can you notice air flow entering from the wall or window outlets in the cold seasons?
I am attaching a photo of the page I read about it. This system was explained a bit more precisely there.

Thanks in advance

Why should one do such nonsense without a heat exchanger?

Install ventilation systems only with heat recovery

This is the simplest type of ventilation system and should only be preferred for cost reasons. Not everyone has to drive a Mercedes. The advantages of a controlled residential ventilation system are well known. For me, it is specifically about the experiences with such systems that are supposedly better than window ventilation.

That has nothing to do with Mercedes etc. but why build an energy saving ordinance if you bring cold air into the house through a hole and blow the warm air out.

This has nothing to do with Mercedes etc., but why build according to the Energy Saving Ordinance if you bring cold air into the house through a hole and blow the warm air out.

As I said, for cost reasons. This diagram shows the differences in ventilation heat loss between three systems. (Guide to energy-saving construction and renovation)