ᐅ Low-profile controlled ventilation system for a 1.2 m attic space

Hello,

I am looking for a mechanical ventilation system with heat recovery that fits under our pointed arch ceiling. The problem is that while the arch is over 2 meters (6.6 feet) wide, the highest point is only 1.2 meters (3.9 feet) tall (42° roof pitch). I need a system that meets DIN 1946 standards and provides a nominal supply air volume of 206 m³/h (121 CFM).

So far, I have only seen units for residential use that stand upright and have thick supply and exhaust ducts coming out of the top. This type of system is generally too tall for my space.

PS: Installing the unit elsewhere is not an option for other reasons.

Does anyone have a recommendation for a manufacturer that offers a suitable system?

I have no idea about DIN standards or whatever, and I’m not sure if this information helps you, but our controlled residential ventilation system is wall-mounted, while our neighbor, who is building at the same time, has theirs installed under the ceiling. It’s a Wolf CWL something, you can look up Wolf GmbH online.

I mean, if it can be installed under the ceiling, shouldn’t it also be possible to install it flush on the floor???

Well, the pipes can also be installed directly at a 90-degree angle to the system, so there doesn’t always have to be a lot of space above...

Otherwise, there are also compact systems—just try searching for compact ventilation units...

I have a Vallox SE90, and it fits on the wall at 1.2m (4 feet).

We are getting a ceiling unit from Helios (controlled residential ventilation EC 340D). It is only about 30 cm (12 inches) high, and the connections are on the left and right, instead of on top. Find a ventilation specialist and ask whether the system can also be installed on the attic floor (with a bracket).

However, keep in mind that the attic must be insulated because controlled residential ventilation systems need to be installed frost-free.

Insulation is one thing, but isn’t the attic way too hot in the summer?