ᐅ Central ventilation system for both supply and exhaust instead of a central exhaust-only system
Created on: 17 Jan 2020 20:34
B
bvb09
Hello everyone,
After about 4 years, we are going to build our house a second time (wood frame construction, same type, same builder), and I won’t go into the reasons here. We are building the same house again (not a different one) because we were completely satisfied overall. However, we will make some small changes. I would also like some input from you on one major aspect:
In 2016, we built our house with a central exhaust ventilation system. The unit was installed in the attic and extracted air from all the wet rooms (2 bathrooms, utility room, and kitchen). The indoor climate was excellent and mostly free of drafts. There was only a slight draft in the living room on cold evenings. I then closed the ventilation opening there and eliminated the draft. The cost of the system was included in the total price.
Now we are considering installing a central mechanical supply and exhaust ventilation system instead, for an additional cost of 4,800 euros. It would be a Zehnder ComfoAir Q 350. The advantages I see are:
- Savings due to heat recovery (although minor; for our 130 m² (1,400 sq ft) home with 3 people, we used about 50 euros of gas per month)
- More comfort, as there would be no drafts
- Better appearance and sound insulation, as there would be no ventilation openings going outside
My former construction manager is currently on vacation, so I can’t ask him: Do you know if the system includes humidity recovery by default, or is that an additional device? What kind of extra cost should I expect?
Furthermore, I imagine that in 10 to 20 years, we might want to install a heat pump instead of the gas boiler, so the ventilation system should also be installed in the utility/technical room. Is this even possible, or would the ventilation system then have to be designed completely differently?
I would appreciate your opinions on this. Since we have been very satisfied with the exhaust ventilation system so far, I am unsure whether we should go for the upgrade.
Best regards,
Robin
After about 4 years, we are going to build our house a second time (wood frame construction, same type, same builder), and I won’t go into the reasons here. We are building the same house again (not a different one) because we were completely satisfied overall. However, we will make some small changes. I would also like some input from you on one major aspect:
In 2016, we built our house with a central exhaust ventilation system. The unit was installed in the attic and extracted air from all the wet rooms (2 bathrooms, utility room, and kitchen). The indoor climate was excellent and mostly free of drafts. There was only a slight draft in the living room on cold evenings. I then closed the ventilation opening there and eliminated the draft. The cost of the system was included in the total price.
Now we are considering installing a central mechanical supply and exhaust ventilation system instead, for an additional cost of 4,800 euros. It would be a Zehnder ComfoAir Q 350. The advantages I see are:
- Savings due to heat recovery (although minor; for our 130 m² (1,400 sq ft) home with 3 people, we used about 50 euros of gas per month)
- More comfort, as there would be no drafts
- Better appearance and sound insulation, as there would be no ventilation openings going outside
My former construction manager is currently on vacation, so I can’t ask him: Do you know if the system includes humidity recovery by default, or is that an additional device? What kind of extra cost should I expect?
Furthermore, I imagine that in 10 to 20 years, we might want to install a heat pump instead of the gas boiler, so the ventilation system should also be installed in the utility/technical room. Is this even possible, or would the ventilation system then have to be designed completely differently?
I would appreciate your opinions on this. Since we have been very satisfied with the exhaust ventilation system so far, I am unsure whether we should go for the upgrade.
Best regards,
Robin
