Experiences with central exhaust system without heat recovery

  • Erstellt am 2018-01-13 19:26:33

Alex85

2018-01-14 12:21:35
  • #1
I just wouldn’t want to voluntarily let unheated air, e.g., through a gap in the window, blow on the back of my neck. But of course, this is an inexpensive way to achieve forced ventilation.
 

Nordlys

2018-01-14 12:29:50
  • #2
He is looking for something cheap. Anyone who has been here longer knows him. He doesn't have endless money. I can tell the zizzi that it's fine like this, you don't get a stiff neck, and we save the extra 2.50 gas per month by drinking Pepsi instead of Coca. Karsten
 

zizzi

2018-01-14 16:20:42
  • #3
Hello again and thank you very much for your information.



Ventilation system is actually a generic term for exhaust system or supply and exhaust ventilation system with or without HRV and there are plenty of sources you can read about that.

What I have been offered is a controlled residential ventilation system from Wolf for a single-family house (bungalow) for exactly 11,500 € (I do not have concrete information).



Nordlys, what you built is exactly what I am saying, i.e. old and humid air is extracted from bathroom and kitchen and fresh and not preheated air comes through valves in the wall or window frame of individual rooms. That is what is known as a central exhaust system.



Central means when air is extracted centrally, with central or decentralized supply air. And I would not necessarily call uncontrolled supply through the windows, because exactly as much air comes in as is extracted, basically the amount of air exchange is regulated by the exhaust motor.



Exactly. Nordlys, do you have underfloor heating or radiators? I ask because if you have radiators in the house the situation gets better, since valves will be mounted on the radiators and so cold supply air is immediately mixed with warm air and supposedly draughts are reduced this way. We will get underfloor heating.

Of course, one should not put the sofa under the ALD (outside air inlet), better said plan well in advance.

Did you have a choice between different ALDs? Like window rebate ventilator, ALD through roller shutter box or ALD in the wall. Difference?
 

Mycraft

2018-01-14 16:44:59
  • #4


Central is central, decentralized is decentralized, everything in between are hybrid forms, which are neither central nor decentralized.



Exactly not, absolutely nothing is controlled there. The fan runs for a time X and extracts a volume Y. Where this volume comes from is of no concern to the fan. That is why it is called uncontrolled.

Through the farthest window(s) hardly any or no air flows in. So you actually only have ensured exchange in the immediate vicinity of the exhaust valves.
 

blaupuma

2018-01-14 17:05:54
  • #5
The Nilan 300 comfort has been installed by my construction company (with whom I am building [emoji16]) for many years. With heat recovery throughout the whole house. Costs 5-7000 euros including installation. That is still fair?
 

Lumpi_LE

2018-01-14 17:38:49
  • #6
If after the third winter one relies on respiratory complaints because the humidity no longer goes above 30%, one can do that.
 

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