ᐅ Central ventilation system located in the basement. Where should the supply air intake and exhaust air outlets be placed?
Created on: 15 Jun 2025 14:53
G
GeraldGHello everyone.
We are planning to build a one-and-a-half-story building. There is a technical shaft planned, but it only extends from the basement up to the floor of the upper story.
At first, we planned without a ventilation system, but now we want to install one. However, all the work will be done by ourselves.
I am a bit uncertain about the best way to manage the supply air and exhaust air. I would like to plan a ground-source air heat exchanger for the supply air to pre-cool and, above all, dehumidify the air in summer. Therefore, it probably makes sense to include the entire system in the basement together with the heating. I see the supply air either only as a “strange tower in the garden” (preferably on the south side), or as a longer duct running around the building and then somehow sucking in the air above the bike shed. Alternatively, the air could be drawn in through the technical shaft and then taken in on the north side under the gable. However, this means the air is transported across the whole house before it goes through the heat exchanger, and such a long duct probably also requires an appropriate diameter, making it difficult to fit through the technical shaft.
I attached the floor plans. How would you plan the supply and exhaust air? Or would you perhaps not plan the system in the basement? Because of the shallow roof (25°), we have a very low attic (~1m (3 feet)) that we will not use. The same applies to the photovoltaic system. Here, I am considering whether to mount the inverter on the facade above the bike shed so that all the DC cables run outside the building and I don’t have the approximately 400W heating load in the basement during summer.
We are planning to build a one-and-a-half-story building. There is a technical shaft planned, but it only extends from the basement up to the floor of the upper story.
At first, we planned without a ventilation system, but now we want to install one. However, all the work will be done by ourselves.
I am a bit uncertain about the best way to manage the supply air and exhaust air. I would like to plan a ground-source air heat exchanger for the supply air to pre-cool and, above all, dehumidify the air in summer. Therefore, it probably makes sense to include the entire system in the basement together with the heating. I see the supply air either only as a “strange tower in the garden” (preferably on the south side), or as a longer duct running around the building and then somehow sucking in the air above the bike shed. Alternatively, the air could be drawn in through the technical shaft and then taken in on the north side under the gable. However, this means the air is transported across the whole house before it goes through the heat exchanger, and such a long duct probably also requires an appropriate diameter, making it difficult to fit through the technical shaft.
I attached the floor plans. How would you plan the supply and exhaust air? Or would you perhaps not plan the system in the basement? Because of the shallow roof (25°), we have a very low attic (~1m (3 feet)) that we will not use. The same applies to the photovoltaic system. Here, I am considering whether to mount the inverter on the facade above the bike shed so that all the DC cables run outside the building and I don’t have the approximately 400W heating load in the basement during summer.
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