A couple of weeks ago I've posted here regarding humidity in our house as I noticed it went up to ~75% indoors. I've bought a dehumidifier, but noticed that the humidity went up again after dehumidifying a room to eg 60%. Then, I installed a temp/humidity sensor outdoor and also calculated the absolute humidity to be able to compare easily. And... then I noticed when it's moist, like now, the outdoor humidity would be close to 100%. Thus, it would almost be impossible to get it <60% indoors, unless you would heat it to 25c +
Right now, it's 99% humidity @ 11c outside, which comes to 9.9g / m3 absolute humidity:
In the bedrooms it's 16.4 @ 65% which is as expected. In the living room it's 21c @ 55% which is almost the same absolute humidity as outside:
Still, it's important to heat your rooms to ensure RH doesn't reach 100% as that may cause dampness/mould. I've installed temp sensors & panel heaters in all rooms and set the min temp to 16c.
Nice to see homeassistant out in the wild! I'm into 3d printing and the humidity causes havoc with my filaments.