ᐅ Central ventilation system – is humidity recovery necessary?
Created on: 30 Dec 2019 16:17
L
ludwig88sta
Hello everyone,
for our planned single-family house with 2 floors and a basement, we have decided on a central ventilation system for all rooms with heat recovery within the thermal envelope. The brand and model are not yet determined.
I have read here on the forum a few times about an additional moisture recovery feature (MRF?), since otherwise the indoor air tends to become too dry (of course, the ventilation system also removes the moisture that naturally occurs in the room, which usually makes the air feel comfortable). I wanted to ask if anyone can confirm these issues and whether this is more common in timber frame houses or also occurs in brick houses?
Did you install additional moisture recovery in your ventilation system? How much extra cost does it involve? I assume there are also additional maintenance costs because it involves another motor and related components.
Best regards
ludwig88sta
for our planned single-family house with 2 floors and a basement, we have decided on a central ventilation system for all rooms with heat recovery within the thermal envelope. The brand and model are not yet determined.
I have read here on the forum a few times about an additional moisture recovery feature (MRF?), since otherwise the indoor air tends to become too dry (of course, the ventilation system also removes the moisture that naturally occurs in the room, which usually makes the air feel comfortable). I wanted to ask if anyone can confirm these issues and whether this is more common in timber frame houses or also occurs in brick houses?
Did you install additional moisture recovery in your ventilation system? How much extra cost does it involve? I assume there are also additional maintenance costs because it involves another motor and related components.
Best regards
ludwig88sta
guckuck2 schrieb:
In summer, the bypass is on. That means the air bypasses the heat exchanger anyway. Specki schrieb:
Isn’t it more logical to use a bypass in summer?
Why would you run air through a heat exchanger in summer? IMHO summer = cool nights = warmer inside = bypass on = no heat exchanger → during the day when it’s warm outside = cooler inside = bypass off = air passes through the heat exchanger, which cools the warm incoming air using the cooler exhaust air.
The heat exchanger works both ways.
Otherwise, how would you achieve air exchange during the day?
Lumpi_LE schrieb:
Nonsens discussion... Very helpful contribution
guckuck2 schrieb:
The truth.
You’re somehow looking for straws here. I’m not looking for straws here. I’m not a ventilation specialist; I can only share what our ventilation installer explained and recommended to me, as well as what I’ve heard from other users. What each person makes of that is up to them.
Just saying the discussion is pointless doesn’t help much. However, you’re welcome to explain exactly what you find pointless and why.