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We've got an insulated house, heat it properly, ventilate it, but still see humidity levels of 70%+ in bed rooms. How to fix that? (lemmy.nz)

submitted 1 year ago by [email protected] to c/[email protected]

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We built a house 7 years ago and it's insulated and has double glazing. I've installed Home Assistant with temp sensors in the bed rooms and seeing 70%+ humidity levels. Temperature is always above 16c

We ventilate it, but still it's 70% in the bedrooms. WHO recommends 40-60%, so we're a bit worried.

Living room is around 55% during the day when we have the heat pump set at 21c.

As it's pretty humid outside I think it's almost impossible to get it lower, but are there any other tips? I don't want to run dehumidifiers. Would an HRV like system help?

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[–] [email protected] 1 points 1 year ago (1 children)

Thanks again for all the tips, much appreciated! I learn more and more about it.

Yes, will try the fan.

What type of system did you install? Just a simple fan or a more sophisticated one? If you want to be ready for balanced I guess your fan needs to be ready as well?

[–] [email protected] 2 points 1 year ago

I installed ducted air con and instead of having a separate system for ventilation, for cost effectiveness I routed it from the outside through the air con system. So the aircon pulled the air from both the return vent in the house (90%) and from the outside (10%). You only need a small amount of mechanical airflow from the outside to reduce moisture levels. And had another vent hole with cover on the soffit for future but not ducted into the air con.