ᐅ Mechanical Ventilation with Heat Recovery for New Construction – Duct Installation
Created on: 14 Feb 2020 08:17
M
Mateo84
Hello everyone,
We will receive our plot this summer and want to complete the planning by October/November.
Key details:
170 m² (1830 sq ft) of living space in a villa without a basement. In a fixed-price offer, 3 supply air vents on the ground and upper floors and 3 exhaust air vents on the ground floor and 2 on the upper floor were included. A "ValloPlus 350 MV" system was proposed.
Now we are wondering how best to install the ducts for the mechanical ventilation system (doing it ourselves) and would like to get some neutral opinions on this:
It will be a (city) villa without a basement. The ceilings on the ground floor are going to be suspended anyway because we want recessed lights and LEDs there, and also want the option to expand these in the future. This applies to the living room, dining room, kitchen, and the WC—so the hallway will be suspended as well, and then everything is sorted.
I have read that the mechanical ventilation system ducts can be installed not in the solid ceiling but in the suspended ceiling, with pipes passing through to the upper floor ceiling.
This raises the following questions for me:
1. Will noise be audible if the ducts are not embedded in concrete?
2. Does this approach even make sense?
3. Would I have to drill holes in the walls to distribute the ducts to the respective rooms? Wouldn’t that transmit noise from room to room?
The same applies on the upper floor with the suspended ceiling and duct distribution across the rooms. Ducts would run through a shaft between the hallway and bathroom on the upper floor.
What would be optimal in a new build? Installing in the solid ceiling and routing ducts into the walls? (24 cm (9.4 inches) aerated concrete, 17.5 cm (6.9 inches) calcium silicate interior walls) Or something else entirely?
What I do not want is to route the ducts into the attic and run them through insulation, then having to insulate the ducts themselves, etc.
Another thought I had: the hallway is adjacent to the garage. Is it possible or sensible (also technically, regarding performance, etc.) to run the supply and exhaust ducts through the garage and vent them out sideways? That would be about 5 meters (16 feet). Would there be any issues with that? We will have to make a duct opening for a central vacuum system into the garage anyway. The background is that on the other side of the house we will have an entrance area with no possibility for a breakthrough there.
Best regards,
Mateo
We will receive our plot this summer and want to complete the planning by October/November.
Key details:
170 m² (1830 sq ft) of living space in a villa without a basement. In a fixed-price offer, 3 supply air vents on the ground and upper floors and 3 exhaust air vents on the ground floor and 2 on the upper floor were included. A "ValloPlus 350 MV" system was proposed.
Now we are wondering how best to install the ducts for the mechanical ventilation system (doing it ourselves) and would like to get some neutral opinions on this:
It will be a (city) villa without a basement. The ceilings on the ground floor are going to be suspended anyway because we want recessed lights and LEDs there, and also want the option to expand these in the future. This applies to the living room, dining room, kitchen, and the WC—so the hallway will be suspended as well, and then everything is sorted.
I have read that the mechanical ventilation system ducts can be installed not in the solid ceiling but in the suspended ceiling, with pipes passing through to the upper floor ceiling.
This raises the following questions for me:
1. Will noise be audible if the ducts are not embedded in concrete?
2. Does this approach even make sense?
3. Would I have to drill holes in the walls to distribute the ducts to the respective rooms? Wouldn’t that transmit noise from room to room?
The same applies on the upper floor with the suspended ceiling and duct distribution across the rooms. Ducts would run through a shaft between the hallway and bathroom on the upper floor.
What would be optimal in a new build? Installing in the solid ceiling and routing ducts into the walls? (24 cm (9.4 inches) aerated concrete, 17.5 cm (6.9 inches) calcium silicate interior walls) Or something else entirely?
What I do not want is to route the ducts into the attic and run them through insulation, then having to insulate the ducts themselves, etc.
Another thought I had: the hallway is adjacent to the garage. Is it possible or sensible (also technically, regarding performance, etc.) to run the supply and exhaust ducts through the garage and vent them out sideways? That would be about 5 meters (16 feet). Would there be any issues with that? We will have to make a duct opening for a central vacuum system into the garage anyway. The background is that on the other side of the house we will have an entrance area with no possibility for a breakthrough there.
Best regards,
Mateo
Since you plan to lower the ceiling, the path of least resistance is to install the pipes there, either by attaching them to the underside of the precast concrete slab and then concealing them later. The required openings should be determined and executed in advance.
As Lumpi_LE already mentioned, there are many ways to achieve this, each with its own advantages and disadvantages.
Embedding pipes in the concrete ceiling affects the structural design differently compared to not doing so.
In our case, for example, we installed everything on the unfinished floor of the upper floor within the insulation layer for both levels. The valves simply face downward or upward depending on the room. However, we used metal ducts.
As Lumpi_LE already mentioned, there are many ways to achieve this, each with its own advantages and disadvantages.
Embedding pipes in the concrete ceiling affects the structural design differently compared to not doing so.
In our case, for example, we installed everything on the unfinished floor of the upper floor within the insulation layer for both levels. The valves simply face downward or upward depending on the room. However, we used metal ducts.