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 sylverstream@lemmy.nz to c/newzealand@lemmy.nz

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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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[-] sylverstream@lemmy.nz 2 points 1 year ago

Yeah we assumed our house wouldn't have moisture issues being so new. But... If I hadn't measured I wouldn't know as we don't have massive moisture issues. Main issue is condensation on the window frames as they are not thermally broken. Well it is what it is.

I've ordered a 10L dehumidifier, we'll ventilate more, and let's see how it goes then.

It's not so easy to get onto the ceiling but it's indeed worthwhile.