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
Grym schrieb:
As far as I know, you should never do that. If it’s a ventilation system, it must run 24/7 all year round. The exhaust duct collects much more than just grease residues. It’s a hotbed for bacteria and mold.That is pure alarmism. There are plenty of reports from users who have had a central ventilation system for many years and, thanks to affordable filters, have ducts that still look like new after long-term use. Dirt and debris can just as easily accumulate in window frames or in decentralized ventilation units. Besides, what is not in the cleanable exhaust duct would still be present inside the rooms.
Grym schrieb:
That’s why problems arise in winter when indoor humidity sometimes drops to 10-20%. Turning it off is not an option. For central systems, it is possible (for a relatively small additional cost compared to the overall expenses) to install a heat exchanger with humidity recovery, called an enthalpy heat exchanger, which helps control both excessive dryness and high humidity during muggy weather.
My central system also includes an automatic bypass, meaning that in summer, as soon as the outside temperature is lower than indoors—usually at night—the heat exchanger is bypassed to allow cooler night air into the house. When it gets warmer again, the heat exchanger activates and cools the incoming air. The control system offers several adjustable settings.
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