ᐅ Is decentralized mechanical ventilation really that expensive?
Created on: 23 May 2014 12:23
H
Hampek
Hello everyone,
I have received a quote for the installation of Inventer fans throughout the entire house. The house is a semi-detached property with approximately 130 sqm (1,400 sq ft) of living space.
The total cost is around €10,500, which I find quite high. The semi-detached house consists of a basement (no fans planned here), ground floor, first floor, and attic.
Ground floor: 2x iV14v, 1x iV Twin, and 1x exhaust fan in the bathroom/shower, with separate control for the ground floor
First floor: 3x iV14v and 1 exhaust fan in the bathroom
Attic: 2x iV14v
I believe the first floor and attic share one control system, but I would need to double-check.
Is this price reasonable or too high? At this price, would it also be possible to install a central mechanical ventilation with heat recovery system?
I would appreciate your help – I really need support here. Thank you.
Best regards,
Robert
I have received a quote for the installation of Inventer fans throughout the entire house. The house is a semi-detached property with approximately 130 sqm (1,400 sq ft) of living space.
The total cost is around €10,500, which I find quite high. The semi-detached house consists of a basement (no fans planned here), ground floor, first floor, and attic.
Ground floor: 2x iV14v, 1x iV Twin, and 1x exhaust fan in the bathroom/shower, with separate control for the ground floor
First floor: 3x iV14v and 1 exhaust fan in the bathroom
Attic: 2x iV14v
I believe the first floor and attic share one control system, but I would need to double-check.
Is this price reasonable or too high? At this price, would it also be possible to install a central mechanical ventilation with heat recovery system?
I would appreciate your help – I really need support here. Thank you.
Best regards,
Robert
D
DerBjoern24 Jun 2014 08:53Since bathrooms, toilets, kitchens, etc. should be equipped with exhaust-only fans, I generally question the use of heat recovery in decentralized systems. The warm air is simply expelled without being used. Whether additional fans with heat recovery are installed seems relatively insignificant to me. You could just rely on trickle vents combined with exhaust fans and save a lot of money...
SirSydom schrieb:
...what do you think happens to the airflow when the bathroom fan is blowing air in and the bedroom fan is exhausting it?... This clearly highlights the significant shortcomings of decentralized controlled residential ventilation!!!
SirSydom schrieb:
...The planner and the owner don’t have to live there, but the poor tenant does. And they usually don’t realize this in advance and are sold such a system as a comfort feature That’s exactly right. The market only needs enough unaware people who fall for flashy advertising! On the other hand, everyone has the opportunity to get advice from an independent planner before purchasing!
So, I usually have little sympathy for complaints made afterwards.
Best regards.
So,
1) I wrote an objective post based on my own experience where I shared my opinion about my decentralized mechanical ventilation system with heat recovery. I wanted to point out to the original poster and anyone interested that such a system can also have its drawbacks. I can (and will move out and build my own house; renting is only temporary) – but those who build with this system might be tied to it for life. In short: I wanted to help.
2) I have to listen to #31 "@sir: Please, if you have no clue,.....". Everyone knows how the Dieter Nuhr quote goes. What am I supposed to have no clue about? I find it outrageous that a factual post aiming to share experiences and possibly prevent others from making a wrong decision receives such a response! I never said decentralized mechanical ventilation is inherently bad, only that the one I have is. I described technical details that are true and now supported by references.
3) What you shout into the forest is what echoes back… I do allow myself to respond to personal attacks with the same rhetorical means. Getting upset that you receive the same response when you accuse someone of having no clue… where are we, please?
So, @Perlenmann, you admit that you never dealt with decentralized mechanical ventilation, made wrong assumptions, and doubted my actual situation. Yet you go ahead and claim I have no clue? And then you are surprised by my answer? Seriously?
As far as I’m concerned, we can settle and forget it, but I am not aware of any fault on my part. I just wanted to help (even if it’s just so everyone now knows what to watch out for when planning a decentralized mechanical ventilation system).
@Bauexperte
Charmer – well, I think I explained why I reacted this way. In my opinion, justified. No, I didn’t research Perlenmann’s history, nor do I need to when someone falsely accuses me of having no clue. I have no particular problem with decentralized mechanical ventilation. It runs at 25% or is off, which is bearable, but then it does nothing. Ventilation is done manually as before, only more because the house is airtight. During the inspection of the semi-detached house when it was a shell (first occupation), the project manager present enthusiastically told me and the owner how great it was and that you wouldn’t need to ventilate manually, etc. THAT is what I meant by “sold as a comfort upgrade.” Of course, I didn’t pay for it. I pay my rent and that’s it. I would have taken the semi-detached house even if there had been no mechanical ventilation system installed. I regret nothing here and am not venting frustration. When I moved in, building my own house was not yet a relevant topic, so I hadn’t dealt explicitly with the various aspects. Now I am doing so to avoid repeating my landlord’s mistakes in my own new build.
I can name the manufacturer, although forum admins usually don’t like that because they fear legal notices from companies. So, I offer to share it via private message. But since the terms of use do not prohibit it, I’ll name the manufacturer here: inVENTer.
System setup:
Basement: 1x IV14R in the hobby room, 3-stage switch (rest without, 1 exhaust air humidity-controlled in the laundry room)
Ground floor + upper floor: Controller ZR60-2
Upper floor: 4x IV14R in 3 bedrooms + bathroom (each pair operating alternately)
Ground floor: 1x IV14R and 1x IV14-Twin in the open living-dining-kitchen area, (+1 exhaust air in the toilet, timer-controlled, manual trigger by push button)
Attic: 2x IV14R with 3-stage switch (always alternating operation)
Regards,
SirSydom
1) I wrote an objective post based on my own experience where I shared my opinion about my decentralized mechanical ventilation system with heat recovery. I wanted to point out to the original poster and anyone interested that such a system can also have its drawbacks. I can (and will move out and build my own house; renting is only temporary) – but those who build with this system might be tied to it for life. In short: I wanted to help.
2) I have to listen to #31 "@sir: Please, if you have no clue,.....". Everyone knows how the Dieter Nuhr quote goes. What am I supposed to have no clue about? I find it outrageous that a factual post aiming to share experiences and possibly prevent others from making a wrong decision receives such a response! I never said decentralized mechanical ventilation is inherently bad, only that the one I have is. I described technical details that are true and now supported by references.
3) What you shout into the forest is what echoes back… I do allow myself to respond to personal attacks with the same rhetorical means. Getting upset that you receive the same response when you accuse someone of having no clue… where are we, please?
So, @Perlenmann, you admit that you never dealt with decentralized mechanical ventilation, made wrong assumptions, and doubted my actual situation. Yet you go ahead and claim I have no clue? And then you are surprised by my answer? Seriously?
As far as I’m concerned, we can settle and forget it, but I am not aware of any fault on my part. I just wanted to help (even if it’s just so everyone now knows what to watch out for when planning a decentralized mechanical ventilation system).
@Bauexperte
Charmer – well, I think I explained why I reacted this way. In my opinion, justified. No, I didn’t research Perlenmann’s history, nor do I need to when someone falsely accuses me of having no clue. I have no particular problem with decentralized mechanical ventilation. It runs at 25% or is off, which is bearable, but then it does nothing. Ventilation is done manually as before, only more because the house is airtight. During the inspection of the semi-detached house when it was a shell (first occupation), the project manager present enthusiastically told me and the owner how great it was and that you wouldn’t need to ventilate manually, etc. THAT is what I meant by “sold as a comfort upgrade.” Of course, I didn’t pay for it. I pay my rent and that’s it. I would have taken the semi-detached house even if there had been no mechanical ventilation system installed. I regret nothing here and am not venting frustration. When I moved in, building my own house was not yet a relevant topic, so I hadn’t dealt explicitly with the various aspects. Now I am doing so to avoid repeating my landlord’s mistakes in my own new build.
I can name the manufacturer, although forum admins usually don’t like that because they fear legal notices from companies. So, I offer to share it via private message. But since the terms of use do not prohibit it, I’ll name the manufacturer here: inVENTer.
System setup:
Basement: 1x IV14R in the hobby room, 3-stage switch (rest without, 1 exhaust air humidity-controlled in the laundry room)
Ground floor + upper floor: Controller ZR60-2
Upper floor: 4x IV14R in 3 bedrooms + bathroom (each pair operating alternately)
Ground floor: 1x IV14R and 1x IV14-Twin in the open living-dining-kitchen area, (+1 exhaust air in the toilet, timer-controlled, manual trigger by push button)
Attic: 2x IV14R with 3-stage switch (always alternating operation)
Regards,
SirSydom
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