Hello everyone,
maybe someone here can give us a good tip, as we are quite uncertain about a ventilation system.
We are planning to build a house (solid construction) according to KfW 70 standards, with underfloor heating, a fireplace, and a solar system. That much is already decided.
We received an offer from Company A for a ventilation system with heat recovery, and the salesperson recommended it to us.
At Company B, the ventilation system is significantly more expensive, and the salesperson told us that since the house is so well insulated, moisture would not be an issue... where would it come from? The rest could be regulated by normal airing anyway.
(I also think he realized that his ventilation system would have blown our budget and now I worry that he advised us against it just for that reason!)
My husband and I are laypersons, but my instinct tells me that the better the house is insulated, the more problems I would have getting rid of moisture and stale air inside the house, right?
After all, a blower door test does show that there is very little air circulation.
Am I completely wrong?
We are a bit torn now, since such a system is not exactly cheap! But is it necessary, or just a nice extra?
Thank you very much for your help!
maybe someone here can give us a good tip, as we are quite uncertain about a ventilation system.
We are planning to build a house (solid construction) according to KfW 70 standards, with underfloor heating, a fireplace, and a solar system. That much is already decided.
We received an offer from Company A for a ventilation system with heat recovery, and the salesperson recommended it to us.
At Company B, the ventilation system is significantly more expensive, and the salesperson told us that since the house is so well insulated, moisture would not be an issue... where would it come from? The rest could be regulated by normal airing anyway.
(I also think he realized that his ventilation system would have blown our budget and now I worry that he advised us against it just for that reason!)
My husband and I are laypersons, but my instinct tells me that the better the house is insulated, the more problems I would have getting rid of moisture and stale air inside the house, right?
After all, a blower door test does show that there is very little air circulation.
Am I completely wrong?
We are a bit torn now, since such a system is not exactly cheap! But is it necessary, or just a nice extra?
Thank you very much for your help!
P
perlenmann28 Mar 2014 10:51@HighDef: Of course, you can convince yourself to be against controlled residential ventilation. But I’m also allowed to share my opinion on the matter!
Just a quick question: Do you have ventilation in your car? Are you not worried about that?
– I don’t need to take any additional measures for humidity control.
– What’s so bad about it running continuously? 10 or 15W power consumption at the lowest setting? My heating controllers or the timed roller shutters consume more!
– Maintenance costs, I can’t deny that: But why should I care about roughly 80€ per year if it means always having fresh, filtered air?
– When I see what my filters remove, I wonder where the high dust levels are supposed to come from. Naturally, window ventilation doesn’t provide controlled airflow! Please provide the study you mentioned!
– I only hear my controlled residential ventilation system at the highest setting. Even during the quick ventilation function, it isn’t used.
– I can’t understand the noise and fine dust pollution from a controlled ventilation system compared to a busy street.
Just a quick question: Do you have ventilation in your car? Are you not worried about that?
– I don’t need to take any additional measures for humidity control.
– What’s so bad about it running continuously? 10 or 15W power consumption at the lowest setting? My heating controllers or the timed roller shutters consume more!
– Maintenance costs, I can’t deny that: But why should I care about roughly 80€ per year if it means always having fresh, filtered air?
– When I see what my filters remove, I wonder where the high dust levels are supposed to come from. Naturally, window ventilation doesn’t provide controlled airflow! Please provide the study you mentioned!
– I only hear my controlled residential ventilation system at the highest setting. Even during the quick ventilation function, it isn’t used.
– I can’t understand the noise and fine dust pollution from a controlled ventilation system compared to a busy street.
I
italiano8327 Apr 2014 23:17Although it has been a month since the last post...
We also built without a ventilation system. Our builder advised against it.
KfW 70 standard with precast concrete walls plus insulation. That’s it!
Just the video alone shows what kind of maintenance costs will come later.
You can’t really compare it to a car’s air conditioning. Even with AC, you sometimes open the windows.
Besides, I prefer to open the window about 90% of the time instead of using air conditioning... except in the peak of summer, of course.
What do you do when you cook? Don’t ventilation system owners open their windows?
In other words, you still ventilate anyway, right? Or do you no longer do regular airing by fully opening windows?
We also built without a ventilation system. Our builder advised against it.
KfW 70 standard with precast concrete walls plus insulation. That’s it!
Just the video alone shows what kind of maintenance costs will come later.
You can’t really compare it to a car’s air conditioning. Even with AC, you sometimes open the windows.
Besides, I prefer to open the window about 90% of the time instead of using air conditioning... except in the peak of summer, of course.
What do you do when you cook? Don’t ventilation system owners open their windows?
In other words, you still ventilate anyway, right? Or do you no longer do regular airing by fully opening windows?
B
BauProjekt1428 Apr 2014 00:41So far, we don’t have a ventilation system (but we will have one in our new build, KfW55 standard).
Of course, you can manage without these systems yourself.
But right now, it’s really annoying to have to open windows several times everywhere every day to prevent mold. The heat loss is quite significant. The radiators have to work hard...
With a ventilation system, you lose much less energy!
The example with the car was good, but it was misunderstood. I wasn’t talking about the air conditioning, but about the ventilation itself. You always have that on, right?!
Of course, you can manage without these systems yourself.
But right now, it’s really annoying to have to open windows several times everywhere every day to prevent mold. The heat loss is quite significant. The radiators have to work hard...
With a ventilation system, you lose much less energy!
The example with the car was good, but it was misunderstood. I wasn’t talking about the air conditioning, but about the ventilation itself. You always have that on, right?!
D
DerBjoern28 Apr 2014 10:39italiano83 schrieb:
The video alone already shows what kind of maintenance costs will come up later. The video is clearly biased. However, this topic has been discussed many times before.
Modern systems use filters to prevent the pipes from getting dirty. If desired, you can easily make filters yourself from fabric sold by the meter at low cost.
What does it actually look like when you cook? Don’t system owners open the window?
I mean, you always ventilate anyway, right? Or do you no longer use shock ventilation? No, why would we? The system runs all day in the background and ensures continuously fresh air.
italiano83 schrieb:
. Or do you no longer do cross-ventilation?Exactly, that’s the point! This system is designed to retain the heating energy inside the house while still providing fresh air.
And I’m looking forward to my ventilation system.
Is there anything better than fresh air after waking up without having to let in the cold? Or not having to dry fogged-up mirrors after showering?
Sure, there probably is. But in my opinion, it greatly improves living comfort. After many years, it would definitely be worth maintaining!
milkie
Is there anything better than fresh air after waking up without having to let in the cold? Or not having to dry fogged-up mirrors after showering?
Sure, there probably is. But in my opinion, it greatly improves living comfort. After many years, it would definitely be worth maintaining!
milkie
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