Hello,
I have the following issue:
We live in a single-family house with 170 sqm (1830 sq ft) of living space plus a 55 sqm (590 sq ft) basement. The whole house is ventilated with a Wolf CWL 400 ventilation system.
Currently, there are three of us living in the house. My wife works Monday to Thursday until 3 PM, and after that, our child also comes home.
This means that from Monday to Thursday between 3 PM and 7 AM, 2-3 people are present, on Fridays two people are present all day, and on weekends, three people.
In the mornings, we additionally ventilate the sleeping area and bathroom manually. Cooking fumes are extracted outside via the range hood. There are no particular odor sources.
The system is set to circulate 125 cubic meters per hour (about 74 cubic feet per minute) at night and 230 cubic meters per hour (135 cubic feet per minute) during the day.
It should be noted that the sleeping area has a relatively large volume due to an open attic space. Nevertheless, the air feels stale in the morning.
At night, the ventilation system cannot be set to a higher level because the noise level would then be disturbing.
During daytime operation, the ventilation is audible but not particularly disruptive. However, it is quite loud, especially in the kitchen. This surprises me because the system can deliver up to 400 cubic meters per hour (235 cubic feet per minute), although that would be very loud and disturbing.
My question now is: Is the system set too low at night? Too high during the day? Is the noise level at this "low" setting normal? I have the impression that the exhaust air valves are particularly noticeable in terms of sound, while the supply air is relatively quiet.
I have the following issue:
We live in a single-family house with 170 sqm (1830 sq ft) of living space plus a 55 sqm (590 sq ft) basement. The whole house is ventilated with a Wolf CWL 400 ventilation system.
Currently, there are three of us living in the house. My wife works Monday to Thursday until 3 PM, and after that, our child also comes home.
This means that from Monday to Thursday between 3 PM and 7 AM, 2-3 people are present, on Fridays two people are present all day, and on weekends, three people.
In the mornings, we additionally ventilate the sleeping area and bathroom manually. Cooking fumes are extracted outside via the range hood. There are no particular odor sources.
The system is set to circulate 125 cubic meters per hour (about 74 cubic feet per minute) at night and 230 cubic meters per hour (135 cubic feet per minute) during the day.
It should be noted that the sleeping area has a relatively large volume due to an open attic space. Nevertheless, the air feels stale in the morning.
At night, the ventilation system cannot be set to a higher level because the noise level would then be disturbing.
During daytime operation, the ventilation is audible but not particularly disruptive. However, it is quite loud, especially in the kitchen. This surprises me because the system can deliver up to 400 cubic meters per hour (235 cubic feet per minute), although that would be very loud and disturbing.
My question now is: Is the system set too low at night? Too high during the day? Is the noise level at this "low" setting normal? I have the impression that the exhaust air valves are particularly noticeable in terms of sound, while the supply air is relatively quiet.
B
BBaumeister30 Sep 2021 15:12I would measure the CO2 level and humidity at some point. Are there also silencers that can be installed directly on the flap valve? I have these telephone silencers in the basement.
B
BBaumeister30 Sep 2021 16:00Absolutely correct. Both the path from the system to the kitchen and to the bedroom are very short. In the other rooms, especially in the children's rooms, you actually can't hear anything at all. Could you send me a link via private message where I can find such dampers? I couldn't find anything on Google right away.
Thank you very much in any case.
Thank you very much in any case.
B
BBaumeister1 Oct 2021 08:08Great, this is exactly what I was looking for. I will order a few of these right away to try them out and will report back afterwards. I’m sure quite a few people have this problem. This way, I can run the ventilation system much stronger at night when everyone is home. At the moment, it’s running completely against the actual demand.
BBaumeister schrieb:
Great, this is exactly what I was looking for. I will order some of these right away.During installation, it is important to ensure that the filter/silencer cartridge remains easy to replace.
I have two similar ones in use, and after three months of operation, they are covered in deep black dust.
There could also be a risk of bacterial growth if they are not cleaned regularly.
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