Using a dehumidifier.

Sir Galahad

Anyone here use one regularly ? I'm using one in a ground floor apartment. No visible damp, and wooden floors are fine but I'm taking a litre a day if I leave it on it the bedrooms. There's no smell but I'm trying to figure out where the moisture comes from.

Sleeper12

There is moisture /humidity in every home. Every time you have a shower, boil a kettle, cook, dry clothes adds to it.

I'm not sure if a litre a day is a lot or not.

Sir Galahad

Been here for five years and no damp on external walls, I always open windows after a shower. I understand that there's always moisture in the air but like you I don't know if what I'm removing is a lot or not. Two adults living here in a 100 Sq M apartment.

Heighway61

A litre a day is very little. You don't have a humidity problem with that amount. If your machine has the feature set the level you want and let it switch on and off automatically.

10-10-20

https://www.boards.ie/discussion/comment/119879784#Comment_119879784

You should use a few relative humidity meters, you can get them online and they'll show you the temperature and the RH.

My guidance is that around 55% at between 20 to 22 degrees C is fine, but that RH will rise to ~>60% if the that air drops to 17 degrees. Having an RH of 55% at 17 degrees would equate to 40% RH if that same air was warmed to 25 degrees C, and so on.

So it's all about finding a balance, but 55% RH at about 20 degrees is fine for most situations and avoids excessive dryness (chaffing on hands and lips) and excess static in the air. Beyond that, find a sweet-spot on the dehumidier dial which equates to something just below 55% and let it do it's magic as it cycles on and off.

munchkin_utd

+1 on the humidity meters

we had intermittant issues with mould but once we started keeping an eye on the levels, and airing when it hit high 60s or more, then the problem just went away.

If you have smart thermostats on your radiators then that might also have a humidity meter on it as a hidden feature.

Furze99

You could well be drying out the ambient air that is outside your dwelling and comes in. Humidity levels outside have been high this damp & wet autumn.

cobham

Think of all the normal reasons for moisture to be in the air of home. Cover saucepans when boiling/reduce to simmer/use extractor. Close off door to bathroom after shower even open window before turning on water. Turn back bedclothes in morning to 'air'... a couple of pints can be in bedding from overnight use. A litre a day sounds reasonable.