ᐅ Electric window opening as an alternative to a ventilation system?
Created on: 28 Jul 2014 11:17
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christianmarx
Hello dear forum community,
this is our first post in this forum.
We will be building soon (townhouse, 140 sqm (1507 sq ft), hipped roof, masonry construction, quiet residential area). We are currently having difficulties deciding on the ventilation system.
We have basically ruled out a central ventilation system because no one can tell us what the condition of the ducts will be like inside after 30 years. Apart from the ongoing maintenance costs for such a system, this feels too uncertain to us. There is a lack of long-term experience here.
We like the decentralized option better, as the entire unit can be removed for thorough cleaning. The downside is the many wall openings (probably 6 for 2 floors, 3 per floor).
Our window supplier therefore suggested windows with parallel opening ventilation. These are burglar-resistant despite being open (resistance class RC2) and can also be equipped with an electric drive, allowing them to open automatically according to settings (random mode, every 10 minutes, every 30 minutes, etc.). This window ventilation meets the requirements for user-independent ventilation according to DIN 1946-6 and has been tested by the Fraunhofer Institute. Of course, we are aware that this option results in energy loss (no heat recovery).
What do you think? Has anyone installed this before and can share their experience?
We look forward to your opinions!
Best regards,
christianmarx
this is our first post in this forum.
We will be building soon (townhouse, 140 sqm (1507 sq ft), hipped roof, masonry construction, quiet residential area). We are currently having difficulties deciding on the ventilation system.
We have basically ruled out a central ventilation system because no one can tell us what the condition of the ducts will be like inside after 30 years. Apart from the ongoing maintenance costs for such a system, this feels too uncertain to us. There is a lack of long-term experience here.
We like the decentralized option better, as the entire unit can be removed for thorough cleaning. The downside is the many wall openings (probably 6 for 2 floors, 3 per floor).
Our window supplier therefore suggested windows with parallel opening ventilation. These are burglar-resistant despite being open (resistance class RC2) and can also be equipped with an electric drive, allowing them to open automatically according to settings (random mode, every 10 minutes, every 30 minutes, etc.). This window ventilation meets the requirements for user-independent ventilation according to DIN 1946-6 and has been tested by the Fraunhofer Institute. Of course, we are aware that this option results in energy loss (no heat recovery).
What do you think? Has anyone installed this before and can share their experience?
We look forward to your opinions!
Best regards,
christianmarx
One00 schrieb:
Check out minute 1:52Wow... yes
I don’t understand this – how does that work? Or is this just another case of consumer deception???
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christianmarx29 Jul 2014 09:47Yes, I also don’t really believe the claim about maintaining heat in the room. They are more likely referring to the comparison that parallel-tilted windows lose less heat than standard tilted windows. But I don’t mind; I expect some energy loss and have no issues with that.
We compared the costs charged by the construction company for removing the windows plus the decentralized ventilation system with those from the window manufacturer for 6 electrically operated windows (the rest are also these parallel-tilted windows but without electric operation). Even then, we were about 5,000 € (around $5,400) below the costs of windows from the construction company plus the decentralized system.
We compared the costs charged by the construction company for removing the windows plus the decentralized ventilation system with those from the window manufacturer for 6 electrically operated windows (the rest are also these parallel-tilted windows but without electric operation). Even then, we were about 5,000 € (around $5,400) below the costs of windows from the construction company plus the decentralized system.
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Doc.Schnaggls29 Jul 2014 10:02Hello,
in my personal opinion, this type of ventilation will not do you any favors. Especially in winter, you will notice increasingly cold areas and possibly drafts near the windows placed next to each other.
A friend of ours installed a decentralized ventilation system that brings fresh air in through 5 mm (0.2 inch) wide (closable) slots in the window frames – however, due to cold bridges and drafts, these slots are always closed when temperatures fall below 5°C (41°F).
So, to put it bluntly, the decentralized ventilation system is basically useless during the winter months.
I think these windows are a good solution for renovating an existing property, but for new constructions, there are better alternatives.
How about removing the windows from the building contract, ordering “standard” windows from a more affordable window supplier, and having your central ventilation system with heat recovery installed by the construction company?
Consider the continuously rising energy costs and how much money you will actually be wasting over the expected lifetime of the windows...
Best regards,
Dirk
in my personal opinion, this type of ventilation will not do you any favors. Especially in winter, you will notice increasingly cold areas and possibly drafts near the windows placed next to each other.
A friend of ours installed a decentralized ventilation system that brings fresh air in through 5 mm (0.2 inch) wide (closable) slots in the window frames – however, due to cold bridges and drafts, these slots are always closed when temperatures fall below 5°C (41°F).
So, to put it bluntly, the decentralized ventilation system is basically useless during the winter months.
I think these windows are a good solution for renovating an existing property, but for new constructions, there are better alternatives.
How about removing the windows from the building contract, ordering “standard” windows from a more affordable window supplier, and having your central ventilation system with heat recovery installed by the construction company?
Consider the continuously rising energy costs and how much money you will actually be wasting over the expected lifetime of the windows...
Best regards,
Dirk
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Bauexperte29 Jul 2014 10:29Hello Yvonne,
Regards, Bauexperte
ypg schrieb:Then your microphone settings on your phone or speakers on your PC/Mac are not correct.
I watched the video (without sound. Is there any sound? I usually browse the internet without sound...)
Regards, Bauexperte
Doc.Schnaggls schrieb:
Hello,
In my personal opinion, this type of ventilation won't do you any favors. Especially in winter, you will notice increasingly colder areas and possibly drafts around the side-by-side windows.
A friend of ours installed a decentralized ventilation system that draws fresh air through 5 mm (0.2 inches) wide (closable) slots in the window frames – however, these are always kept closed at temperatures below 5°C (41°F) due to cold bridges and drafts.
So, to put it bluntly, the decentralized ventilation system is useless during the winter months.
I would also have concerns regarding point 1.
Regarding your friend’s information, it should be noted that he probably only installed an exhaust-only system (in the wet rooms). These exhaust vents create a negative indoor pressure, which draws fresh air through the window slots.
This is the standard ventilation approach proposed by our general contractor. For the reason you mentioned, we decided to remove it and instead arranged for a decentralized system with heat recovery.
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