ᐅ Central Residential Ventilation – Space Requirements?

Hello everyone,
I have a question about my planned construction project (~250m² (2700 sq ft) of living space).
I would like to include a central residential ventilation system... how much space should I plan for this, or how much room will I lose?
Is 1.5 x 1.5 m (5 x 5 ft) enough?

If you can fully utilize the third dimension as well, in my opinion, that should be sufficient for the main unit.

However, also consider the space required within the floor structure or ceiling for the ductwork. The ventilation installer (often, but not always, the heating and plumbing contractor) should be able to advise you on all of this.

Yes, I can use the full ceiling height of just under 2.8 meters (9 feet 2 inches) here.

The installer will have to work with that.

Thank you for your quick response!

Just to give you an idea. This is what a Vallox system with supply and exhaust air vents to the outside, a silencer, and a primary distributor looks like. The ventilated area is 300 m² (3,230 sq ft). It occupies about 6 m² (65 sq ft). A slightly smaller system would also have been possible.

During the shell construction phase, we marked and labeled the spaces on the wall for electrical connections, washing machine/laundry dryer, heating, and freezer with chalk. Now, everything is installed. The dimensions are listed in the datasheet, and you should already check whether the utility room is large enough and has sufficient wall space.

The unit is about the size of a refrigerator – that’s how it was advertised to us.
It is actually no larger but is mounted on the wall. The ceiling appears as shown above, with pipes.
The mechanical ventilation system can also be installed in a more space-saving way by mounting it on the ceiling; it basically makes no difference. This is even recommended if the ceiling height is increased.