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If you monitor your indoor humidity - what is it?

77 replies

Cornishbeetlejuice · 05/11/2024 16:20

I’m just trying to work out what is normal and healthy…

Mine is 61% with the dehumidifier running all day at the moment.

69-75% if it’s raining outside (If we see it’s high like this we will turn the dehumidifier on!)

75% when we wake up but takes 20 mins to reduce down to mid 60s % again. We open the windows every morning. Then close them up and rely on trickle vents.

If it’s sunny the indoor humidity drops to 55%

I just keep reading articles stating 40% - 50% humidity is ideal but to be honest - if it’s as low as this it makes my throat scratchy!

Heating on 19.5c

I live in a bungalow 3 miles from the sea. In a humid part of the SW! We’ve had weeks of fine drizzle & low cloud.

All guttering is clear and we’ve had no leaks. No condensation on windows. And render looks in good condition. No mouldy clothes.

But I do feel a slight obsession with keeping humidity in the low 60s 😂 Anyone else??

OP posts:
Summerhillsquare · 05/11/2024 16:32

70% more or less everywhere all the time. One room has a noticeable damp problem which awaits the builder, but the rest of the rooms baffle me.

Gul8 · 05/11/2024 16:36

Our Meaco is generally around the 50 mark if we don't dry any clothes inside. It's always on and turns itself on when humidity in the room reaches 53-54 and works until its back down to 50. Anything over 55 feels musty and humid in our (old) house. I suspect it depends on the house and what you're comfortable with.

It can take a couple of days to reach 50 and then it stays there by itself.

Backwoods57 · 05/11/2024 16:45

Wooden house in Maine USA. Currently 50% but in the depths of winter we get to 21%

Abra1t · 05/11/2024 16:50

The Meaco can get it down to 50 if it is on 24/7 but even with solar panels, that seems like a lot of electricity to use. It's around 65 at the moment.

I think it's just dank outside. The trickle vent we can't close in the utility room and the bedroom window we open at night, let in damp air from outside.

KeebabSpider · 05/11/2024 16:55

At the moment the dehumidifier tells me its 57. I'd prefer it to be 40 or even less as I like dry conditions. But its just damp, miserable, overcast, tepid and often raining. I air the house, I heat the house but little makes any difference as opening windows seems to simply fill the house with yet more damp air!

1990s · 05/11/2024 16:57

Almost exactly the same as you down to the obsessive behaviour about it Grin

Currently 67%, didn’t manage to get windows open today but dehumidifier is on.

sparklyfox · 05/11/2024 17:03

Without the dehumidifier, the kitchen diner is in the 90s. The Meaco manages to bring it down to the mid 70s at best. It's a bad situation - the room has no ventilation at all.

WhatMe123 · 05/11/2024 17:07

Generally 50 - 60 is optimum, 70 is too high and anything over 80 your risking damp and mould. 40 and below is too dry and this is bad for allergies and eczema
Ours runs at 60 but can go up to 70 without a dehumidifier on for a few days

Cornishbeetlejuice · 05/11/2024 17:19

I have a Meaco as well! I’ve found my people! 😂

Sometimes when it’s really high I start catastrophising that we have rising damp, a huge leak under the floor, drain pipe cracks or a roof that needs replacing even if it’s rained heavily outside for 8 hours.

Mr Meaco has been on all day and reached 60% even in the drizzle so I’ll keep him on tomorrow as well.

We are saving up for a ventilation system and hopefully that’ll make a difference next year!

OP posts:
1990s · 05/11/2024 18:07

What I can’t understand is why the north facing room where I dry my clothes, the bathroom and the kitchen don’t have mildew, but my bedroom where I have a window constantly open does… gutters just replaced so not that…

Saschka · 05/11/2024 18:12

1990s · 05/11/2024 18:07

What I can’t understand is why the north facing room where I dry my clothes, the bathroom and the kitchen don’t have mildew, but my bedroom where I have a window constantly open does… gutters just replaced so not that…

How is your loft insulation? Our surveyor told us if there was no insulation over the bedroom ceiling, the ceiling itself would be cold and we’d get condensation/mildew.

1990s · 05/11/2024 18:13

Interesting. Will check it in that case!

There is mildew on the ceiling, but also on the wall, it is exterior but also south facing…

PrincessAnne4Eva · 05/11/2024 18:13

54-58 in the main house, 85 in the garage! 😱

mynameiscalypso · 05/11/2024 18:15

We have one in our bedroom. When it runs all the time, it can get it down to 60%. When it's been off for a bit and I turn it on again, it's normally around 90%.

MaryLennoxsScowl · 05/11/2024 18:34

In summer my flat is in the 50s; in winter I’ve seen it over 80, and it’s currently mid 60s (not raining but cold today, Scotland). The rooms where windows have been open (bedroom and bathroom) are noticeably damper than the rest, so I think opening the windows is doing nothing but let damp air in. My washing hasn’t dried on the line either. I don’t have a dehumidifier and I have to dry washing inside in winter, on radiators.

UpTheMagicChristmasTree · 05/11/2024 18:35

60-80 depending on the weather. We live in a forest though so the air is generally humid.

MaryLennoxsScowl · 05/11/2024 18:43

My plan is to get a wood burning stove so I can open the chimney up and get a great throughdraught going while not freezing, and also to renovate the utility room so we can have at least a pulley and dehumidifier and at best a tumble dryer.

blackteaplease · 05/11/2024 18:46

Currently in my kitchen diner it's 83%. I have an old damp house with rubbish heating and only a tiny dehumidifier

Hazey19 · 05/11/2024 18:47

I’ve just started using one and it’s been 95 in our conservatory! Coming down to 71 throughout the day which is still high. We do get damp in this room but I was so shocked at the amount of water I’ve had to pour out. It’s filled up twice in 4 days. To the brim 😬

Hazey19 · 05/11/2024 18:50

And yes I’m also obsessed with it now 😂

Cornishbeetlejuice · 05/11/2024 18:55

Well I had a 2 min shower and cooked dinner (no boiling things in a saucepan!) and the humidity is back at 69% in the bedrooms. 86% in bathroom and kitchen is 77%

Honestly, I am going mad! 🤣 I hate bungalows.

OP posts:
Cornishbeetlejuice · 05/11/2024 18:57

Hazey19 · 05/11/2024 18:47

I’ve just started using one and it’s been 95 in our conservatory! Coming down to 71 throughout the day which is still high. We do get damp in this room but I was so shocked at the amount of water I’ve had to pour out. It’s filled up twice in 4 days. To the brim 😬

Wowzers that’s crazy!

OP posts:
beepin · 05/11/2024 18:57

I'm also in the southwest tho not coastal.
I run one in our bedroom all the time as I saw a book lice a few months ago which freaked me out so I was convinced we had damp. It starts at 65-80 and gets down to 40 every day but soon goes back up if you turn it off. We don't air dry washing indoors.
Shocking the amount of water I empty out if it every day. I'd live in the desert if I could, I hate damp.

Stillamum3 · 05/11/2024 18:58

Mine is at about 65 most of the time. I tend not to open the windows very much and the temperature is about 21 - I feel the cold! It's an old house with thick stone walls, plenty of insulation in the attic and we get very little in the way of mould or mildew. We live in the rainy west of the country.
I dry all my washing in the utility room on an overhead airer and usually put my Blu humidifier on for a couple of hours when I hang the washing up. It is usually dry in a day and a half.

Doggymummar · 05/11/2024 19:01

We have two running, one in the house and one in the garage. It's 50 indoors until we shower then it goes up to 80 and gradually comes down. Been on solid for weeks to get the house down from mid 70s. Im worried about the electric bill.