Controlled residential ventilation with heat recovery - is the planning okay?

Hello everyone,

I have now received the planning for the central controlled residential ventilation with heat recovery from the specialist planner. It would be great if you could take a look at it and write something about it. Mainly, I am concerned about the placement of the supply and exhaust air points. Unfortunately, it has to go a bit quickly now because the developer is putting pressure... :(

Magenta is supply air and "orange/yellow" exhaust air. Many thanks.

Best regards Robert

Here are the pictures:

On the ground floor I would have 2 outlets installed in parallel in the living room. Otherwise, the amount of air for the floor plan room for one outlet is relatively large. On the first floor I would not put the valves on the doors, but in the outer corners of the rooms (but not in the corner, rather about 1 meter away from the walls each). Otherwise, you blow the air in and directly out the door, and in the bathroom again directly in at the door. Then no air exchange takes place in the other areas, or only to a reduced extent. You haven’t planned anything in the attic? Our air shaft vibrates and is loud. I would never run it through bedrooms again. Why don’t you let it run from the ground floor up through the bathroom? That would be more sensible – then the noise level is in the bathroom. I’m surprised that the planning is not done by the person who created and determines the ventilation concept?! I have no idea if one outlet on the ground floor is really enough – that kind of thing has to be calculated.

Hello and thank you for your feedback,

the planning is from a planner. He only wanted to get the OK from me.

In the attic there is, next to the floor-to-ceiling window, a floor grille with supply air. I have already contacted the planner - he is now looking for a way to place the shafts into the bathroom and WC. Thank you very much for the tip!

I didn’t quite understand the thing with the 1st floor...

Regards
Robert

I didn't quite understand the thing with the 1st floor...

The air circulates after all: With three, you have an inlet and an exhaust in the bathroom. If the locations are further outside, I would assume that the air exchange covers more of the stale air from the rooms. The green is supposed to represent the airflows.

If the positions are further outwards, I would assume that the air exchange covers more stale air in the rooms...

Correct, the ideal case is a room diagonal. Ultimately, it is about effective air exchange. Negative example:

v.g.

: Please tell me that your negative example is contrived and that no one has really planned or even built something like that? :O

This is basically Physics 1st grade plus a few moments of logical thinking?

Best regards

Michael