this post was submitted on 21 Jun 2023
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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? (self.newzealand)
submitted 1 year ago by sylverstream to c/newzealand
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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 2 points 1 year ago (1 children)

Thanks. Those numbers are similar to ours. We never really opened windows either, we're aiming to do that daily from now on.

Just bought a dehumidifier. Indeed easiest and cheapest solution.

[–] cabbage 3 points 1 year ago (1 children)

I'm ok with that humidity to be honest, I am not seeing any mould.

[–] sylverstream 3 points 1 year ago

We only a little bit in certain clothes and in the bottom of our alu window frames.

Still above 60% is apparently not healthy. I'd recommend to look into it.