ᐅ Decentralized Ventilation Using Individual Units in a Single-Family Home
Created on: 19 Nov 2025 15:14
J
JuLelle
Hello,
we are currently in the final planning stages before construction begins.
However, there is one important topic I still need to decide on.
It concerns decentralized ventilation units to be installed in one or two rooms (bathroom and possibly kitchen). I have done some research, and many systems use the push-pull setup, which requires two fans. Since this does not make sense with my floor plan and I don’t want a vent on every wall, I am looking for a unit that can operate independently.
I have come across the following devices:
1. Blauberg Freshpoint-E
2. Blauberg VENTO Expert DUO A30-1
Both units can provide supply and exhaust air with heat recovery.
Does anyone have experience with the manufacturer or these models? Or is there a good/better alternative?
A central ventilation system is not an option for me, as we also like to keep windows open or tilted. However, in my opinion, a fan in the bathroom makes sense due to the occasionally high humidity levels.
Thanks in advance.
we are currently in the final planning stages before construction begins.
However, there is one important topic I still need to decide on.
It concerns decentralized ventilation units to be installed in one or two rooms (bathroom and possibly kitchen). I have done some research, and many systems use the push-pull setup, which requires two fans. Since this does not make sense with my floor plan and I don’t want a vent on every wall, I am looking for a unit that can operate independently.
I have come across the following devices:
1. Blauberg Freshpoint-E
2. Blauberg VENTO Expert DUO A30-1
Both units can provide supply and exhaust air with heat recovery.
Does anyone have experience with the manufacturer or these models? Or is there a good/better alternative?
A central ventilation system is not an option for me, as we also like to keep windows open or tilted. However, in my opinion, a fan in the bathroom makes sense due to the occasionally high humidity levels.
Thanks in advance.
Nauer schrieb:
Hi,
If you plan to use the fan as a “safety” feature and only run it when humidity is too high, that sounds like a good plan. Especially combined with Loxone integration, you can implement very precise control. When choosing the manufacturer, make sure the humidity sensor works reliably and isn’t too sensitive, for example, reacting unnecessarily when you open a window.
Regarding performance, it’s important that the fan is suitable for the room size without consuming too much energy or becoming too noisy. Have you checked the specific air flow rates of both models? The Freshpoint with CO2 sensor might actually be helpful in your case if you often deal with high humidity. Good morning Nauer,
The air flow rates are shown below. For the 15sqm (161 sq ft) bathroom, I don’t see any issues with either unit. The electrical power is the same for both, with only the diameter being larger in one model.
Noise levels are also not a problem, since they won’t run continuously and a schedule can be set.
And if the humidity is too high, it’s allowed and even recommended to run it at level 1 or 2.
N
nordanney20 Nov 2025 08:511. When it comes to two pendulum fans, as you mentioned as possible devices, it doesn’t really matter (there is an endless variety of devices available); besides that, almost all devices can be paired together appropriately.
2. If you want to install even a minimal ventilation system and are allowed to use two devices, then I would (but my opinion doesn’t count) recommend devices with crossflow or counterflow heat exchangers. These are quieter (so they can be used 24/7 without any issues), offer higher performance, and it doesn’t matter how many devices you install or how you arrange them. They operate completely independently of each other – supply and exhaust air simultaneously and alternately. However, for really good devices, you should expect costs around 4,000 (currency not specified).
But if you prefer supportive texts from AIs as confirmation, that’s fine. Otherwise, you can see that even here your technically outdated plan doesn’t find much approval.
Once again the question, since you are having professionals design your house: what does the mandatory ventilation concept say? You consistently ignore such technical questions, no matter who they come from. Is there perhaps something in it that you think shouldn’t be there?
2. If you want to install even a minimal ventilation system and are allowed to use two devices, then I would (but my opinion doesn’t count) recommend devices with crossflow or counterflow heat exchangers. These are quieter (so they can be used 24/7 without any issues), offer higher performance, and it doesn’t matter how many devices you install or how you arrange them. They operate completely independently of each other – supply and exhaust air simultaneously and alternately. However, for really good devices, you should expect costs around 4,000 (currency not specified).
But if you prefer supportive texts from AIs as confirmation, that’s fine. Otherwise, you can see that even here your technically outdated plan doesn’t find much approval.
Once again the question, since you are having professionals design your house: what does the mandatory ventilation concept say? You consistently ignore such technical questions, no matter who they come from. Is there perhaps something in it that you think shouldn’t be there?
The mentioned fans are not the traditional oscillating fans. Have you even looked at them?
And if I wanted to discuss the ventilation concept with you, I would have included that. But I definitely don’t discuss such matters with a self-proclaimed “ventilation expert” like you. I handle that with the company planning my house. And please don’t assume incompetence just because it contradicts your opinion. The construction company shows a lot of expertise and explains everything to me clearly.
And if I wanted to discuss the ventilation concept with you, I would have included that. But I definitely don’t discuss such matters with a self-proclaimed “ventilation expert” like you. I handle that with the company planning my house. And please don’t assume incompetence just because it contradicts your opinion. The construction company shows a lot of expertise and explains everything to me clearly.
Users asking questions will receive varying quality answers here, depending on the information provided. Sometimes the responses may go beyond the narrow scope of the question, offering the asker a chance to consider other related aspects. This approach is sometimes more successful than others, which is why it’s always a good idea to spend some time reading through a forum first to get an idea of the potential quality of answers. Unfortunately, this kind of basic netiquette has become less common nowadays.
I asked a specific question that I couldn’t find any answers to in the forum. However, that doesn’t mean I have to listen to comments saying my planning is rubbish or outdated. The problem nowadays is that some people rely on knowledge from other sources and feel the need to add their own opinion, even when it has absolutely nothing to do with the question asked. Many assumptions are made, and only one solution is presented as the perfect one.
Some people simply can’t leave a topic without commenting. I read a lot, but I don’t always have to share my opinion if I don’t have all the facts or don’t fully understand the circumstances.
It’s definitely useful when alternatives are suggested. But suggesting alternatives and saying “only my solution is the right one” are two very different things.
Some people simply can’t leave a topic without commenting. I read a lot, but I don’t always have to share my opinion if I don’t have all the facts or don’t fully understand the circumstances.
It’s definitely useful when alternatives are suggested. But suggesting alternatives and saying “only my solution is the right one” are two very different things.
JuLelle schrieb:
But I definitely won’t discuss such topics with a so-called “ventilation expert” like you. I leave that to the company I’m working with to plan my house. What does your house planner suggest? Which manufacturers do they actually work with?