ᐅ Planning Controlled Residential Ventilation Single-Family Home Help – Seeking Feedback

Dear forum members,
I have discovered your great forum and would really appreciate your help and feedback regarding my controlled residential ventilation system.

My name is Dennis, I am 31 years old and from Bremen.

At the moment, my wife and I are building a single-family house of about 150 sqm (1,615 sq ft).
We are planning a central controlled residential ventilation system with heat recovery.

Our electrician provided the best offer for this. However, by that time, I had already researched the topic of controlled residential ventilation extensively and therefore had some change requests right away.

The offered system is a Helios EC 270.
The controlled residential ventilation unit will be installed in the attic above our bedroom.
Easyplan specifies a nominal output of 159 for our house.

Regarding sound insulation, I had read that it is better to choose a system with a larger capacity. Therefore, I would prefer the EC 300 or 500.

On the topic of sound insulation: I redesigned all valves originally planned with two ducts to a single valve with one duct each, so I planned an additional separate duct instead.

Since the ducts from the unit to the bedroom are very short, it makes sense to create a loop here, right? According to Helios, the ducts should be at least 5 m (16 ft) long.

Attached are my plans and the calculation from Helios.

I would be very grateful for your feedback.

Best regards,
Dennis

An electrician installs a mechanical ventilation system? Then the painter will probably handle the plumbing, and the structural work will be done by the carpenter.
The system should be designed by a specialist, so you don’t have to worry about whether everything is done correctly. Don’t just focus on the price – the result is already clear: you are currently planning to change what your electrician is offering you...

Absolutely right, however, during my search I couldn’t find a specialist in the Oldenburg Bremen area. It seems like nowadays almost everyone offers controlled residential ventilation. Therefore, I am now going with the best offer in terms of price and performance, combined with my own considerations and research.

desbo84 schrieb:



Regarding sound insulation: I redesigned all valves that were originally planned with 2 pipes to a single valve with one pipe each. So I preferred planning an extra pipe.

I actually meant I preferred planning an extra valve...

The mechanical ventilation system was apparently designed according to the DIN standard. You might want to ask if it is also possible to design it with increased noise protection requirements. The DIN standard should include guidelines on that as well. Alternatively, the Swiss standard SIA 382/1 could be used, which, to my knowledge, offers better noise protection.

You are overestimating the noise – we also have two pipes connected to one valve in the bedroom, and you can’t hear anything there even in complete silence.

In the living room, it’s definitely not noticeable...