ᐅ Mechanical ventilation with heat recovery – yes or no?!

Created on: 26 Nov 2010 22:20
G
Goldbeere
Hello everyone!
I have been reading and researching online and in this forum for a long time now, but unfortunately, I’m still not much wiser when it comes to mechanical ventilation with heat recovery.
My partner and I are planning a single-family house (160 m² (1,722 ft²)) with gas and solar energy, built to the KfW-70 standard. Now we are wondering whether we should install a ventilation system.
Friends of ours have a decentralized ventilation system in their new build and are very happy with it—they can’t imagine living without it anymore.
However, in various forums, people often say that for new builds, a centralized system is better. The whole ducting, with maintenance and the potential for germs, gives me a weird feeling... I would constantly wonder what’s actually in the air inside my home. Is that a misguided concern?
And is the decentralized ventilation really that much worse than the centralized system? You hear that a lot.
What kind of costs should we roughly expect for a ventilation system? Is it true that centralized and decentralized systems cost about the same?

Thank you very much for all your advice!
Goldbeere
B
Bauexperte
6 Apr 2015 13:27
MaHaus schrieb:

How is this done with internal insulation?
We have a timber-framed house that needs to be insulated on the inside.

I can’t answer that, as I don’t have the necessary expertise. I would recommend discussing it first with a certified expert and an energy consultant, and then having an architect prepare the implementation plans.

Best regards, Bauexperte
P
Payday
31 May 2015 21:18
Can anyone share their experience with Zehnder ventilation systems?
S
Sebastian79
1 Jun 2015 01:16
They are good, but in direct comparison, I found Helios better – somewhat more affordable (especially in additional components) and with standard network access, meaning you can skip physical controls and the setup is easier.
M
M. O.
2 Jun 2015 10:25
MaHaus schrieb:
How do you do this with internal insulation?
We have a timber-framed house that is going to be insulated from the inside.

Whether it’s internal or external insulation doesn’t really matter at that point. I drill a core hole, insert the tube, and pull my cables to the ventilator through it.

The advantage I see with internal insulation is that you can easily run the cables underneath the insulation.
S
Sebi17
22 Feb 2017 11:08
Payday schrieb:
can anyone share information about Zehnder ventilation systems?!

Hello Payday,

This is a bit older, but maybe it will still be useful for someone. Unfortunately, I cannot provide any information about Zehnder ventilation systems.

However, I have had very positive experience with a decentralized residential ventilation system from getAir (SmartFan). We have been using it for about 3 months now and I am absolutely impressed. If you have any questions, feel free to contact me.
P
Payday
23 Feb 2017 17:44
Sebi17 schrieb:
Hello Payday,

Although this is a bit older, it might still be helpful for someone.
Unfortunately, I can't provide any information about the ventilation systems from Zehnder.

However, I have had very good experiences with a decentralized residential ventilation system from getAir (SmartFan). We have been using it for about 3 months now, and I am absolutely impressed. Feel free to contact me if you have any questions.

Hi,

Is that why you signed up? We have been living in our house with a Zehnder ventilation system for 1.5 years already.