MaxiFrett
2020-11-07 19:28:42
- #1
Hello everyone,
I am currently struggling with the question in the title. Specifically, it is about an offer from a general contractor. They are offering a brine/water heat pump with an exhaust air module including heat recovery (both Nibe). The contractor usually installs the exhaust air modules as standard, almost always regardless of the heating system. So active central ventilation – bathroom, kitchen – and passive ventilation via flow grilles in the walls of the other rooms.
As an alternative, we could opt for a controlled residential ventilation system. Additional cost approx. 3,500 EUR.
Now I am unsure which would suit us better: We have experience with a controlled residential ventilation system in a rented apartment and were very satisfied regarding air exchange and noise behavior.
I see the following advantages/disadvantages of the exhaust air solution with heat recovery:
- Cheaper
- Bedrooms cooler in winter
- In summer, use of room heat for hot water
Disadvantages:
- Holes in the walls and more susceptible to external noise – although according to the contractor, this is mainly an exclusion criterion on heavily trafficked roads or flight paths.
- I am afraid of drafts/cold air in winter – which according to the contractor is not the case and I could not find any online sources confirming this either.
- I am unsure about the air exchange: I imagine that the air always takes the shortest path -> exhaust air in the kitchen – supply air then most likely comes from the adjacent room and less from the one two doors away.
On the other hand, I see the following advantages/disadvantages of controlled residential ventilation:
- De facto standard
- Supply air is filtered -> grasses/pollen – although this does not affect us very much.
- We already know how it "feels"
Disadvantages:
- More expensive
- More ducts necessary -> possibly visible.
What do you think?
At first, I was pro-controlled residential ventilation. But now I can also come to terms with the exhaust air solution. Are there forum members who have practical experience with the exhaust air solution and can alleviate my concerns/fears?
I am currently struggling with the question in the title. Specifically, it is about an offer from a general contractor. They are offering a brine/water heat pump with an exhaust air module including heat recovery (both Nibe). The contractor usually installs the exhaust air modules as standard, almost always regardless of the heating system. So active central ventilation – bathroom, kitchen – and passive ventilation via flow grilles in the walls of the other rooms.
As an alternative, we could opt for a controlled residential ventilation system. Additional cost approx. 3,500 EUR.
Now I am unsure which would suit us better: We have experience with a controlled residential ventilation system in a rented apartment and were very satisfied regarding air exchange and noise behavior.
I see the following advantages/disadvantages of the exhaust air solution with heat recovery:
- Cheaper
- Bedrooms cooler in winter
- In summer, use of room heat for hot water
Disadvantages:
- Holes in the walls and more susceptible to external noise – although according to the contractor, this is mainly an exclusion criterion on heavily trafficked roads or flight paths.
- I am afraid of drafts/cold air in winter – which according to the contractor is not the case and I could not find any online sources confirming this either.
- I am unsure about the air exchange: I imagine that the air always takes the shortest path -> exhaust air in the kitchen – supply air then most likely comes from the adjacent room and less from the one two doors away.
On the other hand, I see the following advantages/disadvantages of controlled residential ventilation:
- De facto standard
- Supply air is filtered -> grasses/pollen – although this does not affect us very much.
- We already know how it "feels"
Disadvantages:
- More expensive
- More ducts necessary -> possibly visible.
What do you think?
At first, I was pro-controlled residential ventilation. But now I can also come to terms with the exhaust air solution. Are there forum members who have practical experience with the exhaust air solution and can alleviate my concerns/fears?