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mariano.dechow10 Dec 2023 09:02Our construction supervisor (BU) is very honest, and we, as well as others, trust him a lot.
However, he is not a fan of ventilation systems.
Here are the prices he quoted. Are there
1. Solutions that are more integrated into the wall or similar, to avoid additional height increases, and
2. Is the price reasonable?
Total area is 187 sqm (2013 sq ft), including about 40 sqm (430 sq ft) of an extension. The rest is spread over two levels in a town villa style.
There is a ceiling opening of about 9 sqm (97 sq ft) to the first floor, which is not included in the 187 sqm (2013 sq ft).
Attached is the text from the BU.
Pluggit Avent fresh air unit with heat recovery included.
Aluminum cross counterflow heat exchanger
Including air ducts, supply and exhaust air outlets, silencers, distributor, cover grilles in standard white plastic, supply and install 14,192.58 €
Blower door test mandatory when installing ventilation system 476.00 €
Increase of total floor construction height from 14 cm (5.5 inches) to 18 cm (7 inches) on the upper floor
By adding 3 cm (1.2 inches) more styrofoam insulation 2,988.97 €
Enthalpy exchanger and summer bypass
No costs yet
However, he is not a fan of ventilation systems.
Here are the prices he quoted. Are there
1. Solutions that are more integrated into the wall or similar, to avoid additional height increases, and
2. Is the price reasonable?
Total area is 187 sqm (2013 sq ft), including about 40 sqm (430 sq ft) of an extension. The rest is spread over two levels in a town villa style.
There is a ceiling opening of about 9 sqm (97 sq ft) to the first floor, which is not included in the 187 sqm (2013 sq ft).
Attached is the text from the BU.
Pluggit Avent fresh air unit with heat recovery included.
Aluminum cross counterflow heat exchanger
Including air ducts, supply and exhaust air outlets, silencers, distributor, cover grilles in standard white plastic, supply and install 14,192.58 €
Blower door test mandatory when installing ventilation system 476.00 €
Increase of total floor construction height from 14 cm (5.5 inches) to 18 cm (7 inches) on the upper floor
By adding 3 cm (1.2 inches) more styrofoam insulation 2,988.97 €
Enthalpy exchanger and summer bypass
No costs yet
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LustigerFrosch10 Dec 2023 09:27Gross or net price?
In my opinion, this is a normal price for a controlled residential ventilation system. You might find it somewhere 1,000 € to 2,000 € (approximately 1,000 to 2,000 USD) cheaper, but otherwise it seems reasonable. What price were you expecting?
I believe the Pluggit Avent already includes a heat exchanger.
You need to raise the ceiling so there is enough space for the ventilation ducts.
What I find expensive are the stainless steel covers from Pluggit (at least the exhaust air ones cost 90 € (about 90 USD) each), if you don’t like the white plastic covers on the ceiling later on.
In my opinion, this is a normal price for a controlled residential ventilation system. You might find it somewhere 1,000 € to 2,000 € (approximately 1,000 to 2,000 USD) cheaper, but otherwise it seems reasonable. What price were you expecting?
I believe the Pluggit Avent already includes a heat exchanger.
You need to raise the ceiling so there is enough space for the ventilation ducts.
What I find expensive are the stainless steel covers from Pluggit (at least the exhaust air ones cost 90 € (about 90 USD) each), if you don’t like the white plastic covers on the ceiling later on.
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mariano.dechow10 Dec 2023 09:32I have always seen figures online ranging from 40 to 60 € per sqm (square meter) and 6,000 to 10,000.
I thought that would cover everything.
Then the fees disappear, and eventually, if needed, there might be a decentralized system in the hotspots. 🙁
I thought that would cover everything.
Then the fees disappear, and eventually, if needed, there might be a decentralized system in the hotspots. 🙁
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LustigerFrosch10 Dec 2023 09:42Then the offer roughly matches up. Since everything is more expensive at the moment, including in the construction industry, with €60 per sqm (approximately $65 per sq ft) times 187 sqm (about 2014 sq ft), you end up around €11,000. So you’re not far off.
And raising the ceiling height doesn’t directly relate to installing a ventilation system and, of course, isn’t included in the online estimates.
I would consider whether you actually want a mechanical ventilation system with heat recovery. I haven’t lived in our house long enough yet to give you genuinely honest advice, but looking at the ventilation requirements if you don’t have a mechanical ventilation system, I wouldn’t be able to meet them and would worry about mold. But I could be wrong and maybe it’s actually not a problem at all.
And raising the ceiling height doesn’t directly relate to installing a ventilation system and, of course, isn’t included in the online estimates.
I would consider whether you actually want a mechanical ventilation system with heat recovery. I haven’t lived in our house long enough yet to give you genuinely honest advice, but looking at the ventilation requirements if you don’t have a mechanical ventilation system, I wouldn’t be able to meet them and would worry about mold. But I could be wrong and maybe it’s actually not a problem at all.
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mariano.dechow10 Dec 2023 09:4720k is just not feasible, unfortunately.
The building company has constructed just under 1,000 houses according to the energy saving regulations, and only a handful with mechanical ventilation with heat recovery. None of them have mold issues. I’m just worried about it.
I would then install air quality monitors everywhere and hope for the best.
Don’t get me wrong. I had asked for mechanical ventilation with heat recovery, but 20k is simply not easy to afford, and friends who built with it and with mechanical ventilation have spent over half a year dealing with issues and regret having paid the money.
I would have done it for 10k.
Isn’t there an option without floor construction, for example through the wall?
The building company has constructed just under 1,000 houses according to the energy saving regulations, and only a handful with mechanical ventilation with heat recovery. None of them have mold issues. I’m just worried about it.
I would then install air quality monitors everywhere and hope for the best.
Don’t get me wrong. I had asked for mechanical ventilation with heat recovery, but 20k is simply not easy to afford, and friends who built with it and with mechanical ventilation have spent over half a year dealing with issues and regret having paid the money.
I would have done it for 10k.
Isn’t there an option without floor construction, for example through the wall?
mariano.dechow schrieb:
and friends who built with him and a mechanical ventilation system with heat recovery have been turning it off for over half a year and regret having paid for it. Maybe he is not the right builder or is stuck in the past? I don’t know anyone who is annoyed by a central mechanical ventilation with heat recovery and turns it off. Only buildings with decentralized ventilation systems are known in my environment for users to generally disable the units.
What kind of mold? Where would it come from and where should it go with a mechanical ventilation system with heat recovery? That doesn’t make sense.
For us, an 18cm (7 inch) floor structure was standard, so there were no issues with the pipes.
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