What I found the most important aspect in my place is managing humidity especially in the bathroom. When it's cold and 90% humidity the extractor fan or an open window don't help much
after a shower, the steam just condensates on the cold walls.
Instead I close the window, run a dehumidifier before taking a shower to lower the humidity so during the shower the air is dry enough to absorb the steam and there is no condensation. As a bonus the bathroom is also a bit warmer because the dehumidifier converts the warm steam into warm dry air instead of it going out the window.
Although I think this year it will be only my wife taking the hot showers.
What I found the most important aspect in my place is managing humidity especially in the bathroom. When it's cold and 90% humidity the extractor fan or an open window don't help much
after a shower, the steam just condensates on the cold walls.
Instead I close the window, run a dehumidifier before taking a shower to lower the humidity so during the shower the air is dry enough to absorb the steam and there is no condensation. As a bonus the bathroom is also a bit warmer because the dehumidifier converts the warm steam into warm dry air instead of it going out the window.
Although I think this year it will be only my wife taking the hot showers.