ᐅ Mechanical Ventilation with Heat Recovery for New Construction – Duct Installation
Created on: 14 Feb 2020 08:17
M
Mateo84Hello 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
The shaft in the bathroom just takes up space. You can order the concrete ceiling with openings (by the way, also for your spotlights).
Then you run the pipes from the ground floor to the upper floor and distribute them on the concrete ceiling of the upper floor, once through the holes downward for ventilation of the ground floor from the ceiling, and once through the screed upward for ventilation of the upper floor from the floor.
This way, you save a box in the bathroom on the upper floor, and everything is then covered with screed.
Then you run the pipes from the ground floor to the upper floor and distribute them on the concrete ceiling of the upper floor, once through the holes downward for ventilation of the ground floor from the ceiling, and once through the screed upward for ventilation of the upper floor from the floor.
This way, you save a box in the bathroom on the upper floor, and everything is then covered with screed.
By "shaft," I was mainly referring to the distribution boxes, for which there will also be openings provided.
Of course, you can arrange the recessed lights that way, but I think doing it later leaves you far more flexible for new installations, and the openings do cost something.
I have thought about it like this as well:
Foundation, precast concrete slab (on the ground floor the same as the upper floor) installed. Now, how do I get the pipes effectively into the ceiling of the upper floor without having to go through the attic, so insulating the pipes, etc.?
Of course, you can arrange the recessed lights that way, but I think doing it later leaves you far more flexible for new installations, and the openings do cost something.
I have thought about it like this as well:
Foundation, precast concrete slab (on the ground floor the same as the upper floor) installed. Now, how do I get the pipes effectively into the ceiling of the upper floor without having to go through the attic, so insulating the pipes, etc.?
The pipes for the ground floor and upper floor are both installed in the concrete slab between the ground floor and upper floor, specifically on top of the slab and beneath the screed of the upper floor. They are placed within the insulation, above the electrical cables, and below the underfloor heating. The gaps are filled with loose-fill insulation, and the screed is applied on top.
On the upper floor, the ventilation runs under the floor.
On the ground floor, it runs above the ceiling. To allow it to pass through the concrete slab, openings should be pre-made in the factory.
On the upper floor, the ventilation runs under the floor.
On the ground floor, it runs above the ceiling. To allow it to pass through the concrete slab, openings should be pre-made in the factory.
I understand what you mean. So, on the ground floor, I wouldn’t have any floor outlets, only ones in the ceiling—are there any advantages or disadvantages to this?
On the upper floor, outlets would only be in the floor and NOT in the ceiling (roof structure)—are there any pros or cons here?
Basic question: why put all that stuff in the screed at all? I mean, if the outlets on the upper floor are coming from the floor, couldn’t they just be planned/installed in the ceiling instead, where the ducts for the ceiling vents to the ground floor are already routed?
Then I would have the conduits for electricity and the pipes for the controlled mechanical ventilation in the ceiling and only the underfloor heating in the screed?
On the upper floor, outlets would only be in the floor and NOT in the ceiling (roof structure)—are there any pros or cons here?
Basic question: why put all that stuff in the screed at all? I mean, if the outlets on the upper floor are coming from the floor, couldn’t they just be planned/installed in the ceiling instead, where the ducts for the ceiling vents to the ground floor are already routed?
Then I would have the conduits for electricity and the pipes for the controlled mechanical ventilation in the ceiling and only the underfloor heating in the screed?
He says he wants to put the pipes in the suspended ceiling – do you even have one? That’s rather unusual.
There are many ways to achieve the same result.
We have the pipes for the ground floor in the ground floor ceiling, and the ones for the upper floor on top of the ground floor ceiling. Putting everything inside the ceiling wouldn’t have worked.
There are many ways to achieve the same result.
We have the pipes for the ground floor in the ground floor ceiling, and the ones for the upper floor on top of the ground floor ceiling. Putting everything inside the ceiling wouldn’t have worked.
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