Our 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
i_b_n_a_n schrieb:
Is self-performance possible? Then maybe you could lay the pipes yourself from the air distributors onwards.I would have said to only have the pipes installed and then connect the unit yourself. Is that what you mean?
Simply install up to the manifold (octopus) and then buy, connect, and commission the unit yourself. Such a device is as complex as a toaster.
Alright, you can add the cost of filters, but what exactly needs to be serviced annually on a unit that costs €400, especially if you already replace the filters yourself? Zehnder offers this as a basic maintenance package, but I wouldn’t spend money on it now. If something really breaks down, a technician can still come out later...
- Service guarantee
- Zehnder quality certificate
- Professional maintenance every 2 years by ventilation experts
- Filter replacement reminder service
- Maintenance appointment scheduling
- Device software updates
- Support/customer service
- Technical device briefing
Tolentino schrieb:
400 EUR maintenance per year (of course, you can skip it, then it's about 5,000 EUR every 6 years for repairs), 50 EUR for filters every six months, after 30 years you'll probably need at least a new ball bearing, no idea what the labor costs are.What kind of major maintenance do you need for a standard controlled residential ventilation system? Apart from replacing the filters in the unit and, if present, the exhaust filters in the ceiling valves, that's basically it 😉In my system, both ball bearings were worn out after about 6 years. I bought four new ones for 20€ and installed them. It has been running again for about a year now.
H
HeimatBauer12 Dec 2023 20:04So, our maintenance consisted of
- removing the heat exchanger unit
- flushing it with water in both directions
- blowing air through it in both directions
and that was it.
For the exhaust air filters in the rooms, you should ask for a spare set during installation. Then, simply replace all filters every two months and clean the dirty ones by
- vacuuming them
- rinsing them once with dish soap solution
- letting them dry
and that’s it.
- removing the heat exchanger unit
- flushing it with water in both directions
- blowing air through it in both directions
and that was it.
For the exhaust air filters in the rooms, you should ask for a spare set during installation. Then, simply replace all filters every two months and clean the dirty ones by
- vacuuming them
- rinsing them once with dish soap solution
- letting them dry
and that’s it.
Malle Zwabber12 Dec 2023 20:49Ramona13 schrieb:
After about 16 years, you’ll have recovered your 6200€ (about 6700 USD), so I definitely see a long-term saving there. The house will certainly last much longer. 😉That applies to me as well. However, if you have a company do the work, you’ll end up paying quite a bit more.W
WilderSueden12 Dec 2023 22:05mr.xyz1 schrieb:
That’s true, but since most people don’t ventilate enough, very few actually have problems with dry air, and it’s more noticeable with a mechanical ventilation system with heat recovery. The argument might be technically correct, but it is complete nonsense. Without ventilation, you end up with stale air that needs to be removed. Especially in older buildings, many people experience mold in corners and behind furniture. The causes are thermal bridges, humid air, and insufficient air exchange. We can debate this for a long time... the only valid argument against a mechanical ventilation system with heat recovery is the cost.
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