Hello everyone,
My husband and I are currently building a house. After much consideration, we have decided to install a decentralized ventilation system (we definitely did not want a centralized ventilation system). Since the electricians are on site right now, it would make sense to have the wiring installed at the same time. However, we don’t want to rush into this and prefer to take a closer look into the topic first.
There are still so many unanswered questions... So I thought I’d register on this website and try my luck in this forum. I hope you can help me.
We were recommended companies like Senertec, Maico, Viessmann, and Dimplex. Has anyone had experience with decentralized ventilation systems from these manufacturers (quality, maintenance, can you notice the air exchange?, are these ventilations noisy, etc.)?
I was told we should choose honeycomb fans. Why? What are the advantages compared to other types of fans?
Today, I already called the heating contractor to ask if he could provide a quote and what price we should expect. He said about 10,000 euros for 4 fans! Isn’t that a bit expensive?
I hope you can help me out a bit.
Best regards
Yours, Nikolaus
My husband and I are currently building a house. After much consideration, we have decided to install a decentralized ventilation system (we definitely did not want a centralized ventilation system). Since the electricians are on site right now, it would make sense to have the wiring installed at the same time. However, we don’t want to rush into this and prefer to take a closer look into the topic first.
There are still so many unanswered questions... So I thought I’d register on this website and try my luck in this forum. I hope you can help me.
We were recommended companies like Senertec, Maico, Viessmann, and Dimplex. Has anyone had experience with decentralized ventilation systems from these manufacturers (quality, maintenance, can you notice the air exchange?, are these ventilations noisy, etc.)?
I was told we should choose honeycomb fans. Why? What are the advantages compared to other types of fans?
Today, I already called the heating contractor to ask if he could provide a quote and what price we should expect. He said about 10,000 euros for 4 fans! Isn’t that a bit expensive?
I hope you can help me out a bit.
Best regards
Yours, Nikolaus
I am not familiar with Dimplex. I am generally skeptical about these compact units with multiple connections because the heat recovery efficiency (HRV) is usually not very high. Another issue is the noise level in the room where the unit is installed. I also do not like that during winter operation, to protect itself from freezing, the unit increases exhaust airflow to thaw itself. This only works up to a certain point, after which it switches off and tries to defrost repeatedly through the exhaust air. During this time, the ventilation does not run properly. However, this applies to all units with cross-counterflow heat exchangers that do not have preheating.
SoundTheAlarm22 Aug 2016 19:23jochi79 schrieb:
The ventilation planner responsible recommended the Dimplex DL 50 WE to me. Are there any experiences with this unit?
My favorite would actually be the Meltem since it comes in a KNX-compatible version. What are your opinions here? I’m also interested in both. The Meltem with heat recovery because it is KNX-compatible, has radial fans, and electric shut-off dampers. The Dimplex because it is considerably cheaper.
Does anyone have experience with these?
HIGIL schrieb:
Another important factor is the noise level in the room where the device is installed. There must be significant differences between the models in this regard.
SoundTheAlarm23 Aug 2016 09:55From what I have read so far, inverters are supposed to be more annoying because the noise changes every 1-2 minutes. That sounds reasonable to me at first.
Is it true that decentralized ventilation systems generally operate with inverters?
By inverter, I mean the following:
For example, in a large open-plan living and kitchen area, there are two devices—one near the kitchen and one on the opposite side in the living room.
On one side, air is blown in, while on the other side, air is blown out.
After 60 seconds, this airflow reverses, so the side that was previously blowing air in now blows air out.
This is intended to reduce drafts since the airflow keeps reversing.
Additionally, it is necessary because (as a general contractor explained to me) after about 60 seconds, the heat recovery at the inlet side is “used up” (too much cold air flows in). During the reversal, this area is warmed by the now outgoing warm air and reheats the incoming cold air during the next cycle.
Are there systems that maintain a constant airflow instead? If so, how do they handle heat recovery?
By inverter, I mean the following:
For example, in a large open-plan living and kitchen area, there are two devices—one near the kitchen and one on the opposite side in the living room.
On one side, air is blown in, while on the other side, air is blown out.
After 60 seconds, this airflow reverses, so the side that was previously blowing air in now blows air out.
This is intended to reduce drafts since the airflow keeps reversing.
Additionally, it is necessary because (as a general contractor explained to me) after about 60 seconds, the heat recovery at the inlet side is “used up” (too much cold air flows in). During the reversal, this area is warmed by the now outgoing warm air and reheats the incoming cold air during the next cycle.
Are there systems that maintain a constant airflow instead? If so, how do they handle heat recovery?
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