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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Thermostat at 18 degrees

290 replies

SmileEachDay · 19/02/2025 19:21

My sister is telling me I’m a freak - but any hotter is awful, surely?

YABU - team sister
YANBU - me and the correct answer

OP posts:
godmum56 · 19/02/2025 22:55

BMW6 · 19/02/2025 22:48

Gosh it's almost as if Humans have different levels of sensitivity to heat and cold!

Who'd have thought it? 🙄

and also that a single thermostat is a scientifically accurate way of measuring temperature right round a house....again who'da thunk it?

Maia77 · 19/02/2025 22:57

Mine is set at 22.5, but I like it to be around 23. 18 is freezing cold for me. Would struggle to cope with that. Even at night when the heating is off, the temperature rarely falls below 19.

caringcarer · 19/02/2025 22:57

I have it set at 18 during the day when we are moving about but 19 in the evening when we are sitting down. 16 overnight because if it gets too hot at night it triggers my asthma.

Edenmum2 · 19/02/2025 22:58

Ours would take all day to get to 18. 17 is about tops for us. It's fine. Our heating bill was £300 last month. Ludicrous

SnoozingFox · 19/02/2025 23:00

FrangipaniBlue · 19/02/2025 22:25

Ours is set at 13-15 during the day, off at night.

I hate the way central heating makes the air feel heavier and stuffy, I just can't breathe. I'd rather it was cooler and use a blanket.

So if that is the temperature outside on a cloudy dat, would you happily sit in the park with no coat on? Most people outside would be wearing coats walking around at 13⁰.

Actually yes, I would and today I have. It was about 6-8 degrees and I walked from the car to the gym and car into work in just a jumper, no coat.

If I'd spent longer outside I would've worn a coat but at 13 degrees I wouldn't, I'd just have a jumper on and I'd say that's the norm up north?

We joke that only single figures is "big coat weather" 😂

Can you not see that walking from one place to another is entirely different from sitting watching TV or working on a laptop?

Hazylazydays · 19/02/2025 23:02

Vettrianofan · 19/02/2025 19:37

23 is perfect 😊

Another vote for 23, I like to be warm and cosy!

NeverDropYourMooncup · 19/02/2025 23:04

ThisFluentBiscuit · 19/02/2025 22:20

18 is the minimum for room temperature, according to the World Health Organisation. And anyone vulnerable - the elderly, ill, and children - should have it higher. I think 18 is quite cool.

DP read about that.

I've been trying to convince him ever since that I'm the best person to say if I'm cold, not some bloke with a fancy job. And if I wake up struggling to breathe from the suffocating heat of him turning it on to 23 at night ever again, I'm waking him up to go and switch it off.

Lucyccfc68 · 19/02/2025 23:10

I have mine set to come on in the morning and at tea-time to 21.5 In between if it drops below 18, then it comes on.

If I am working from home, I can’t cope with 18, it’s far too cold. I’d be putting a coat, gloves, scarf and thermal socks on at anything less than 18.

I am exceptionally lucky that I don’t have to worry about my gas and electric bills. They average £138 a month.

DopeyS · 19/02/2025 23:11

Mines set to 15 but is in a cupboard so not sure how accurate it is. If it feels chilly I set it to get to 15.5. DH always sets it to get to 20 and it ends up roasting and have to turn it off. The rest of the house is always cold though, just the living room warms up. Joys of an older house with random draughts.

Ireallycantthinkofagoodone · 19/02/2025 23:12

My thermostat is in the hallway, and set to 15. If I have visitors, I turn it up to 16 or 17. Also, my boiler is in my garage, and if the temperature in there drops below 5, the boiler fires up to protect itself and the pipes. It’s really irritating, as I don’t want it to be on overnight, but I can’t change it. Dread the winter bills though 😳

Baggyprincess · 19/02/2025 23:17

Budget restricts thermostat to 17degrees usually, would choose 20+ if money were no object! Sometimes it is boosted when I know it’s really chilly - when all 4 dogs are sitting on my lap!!

Mrsmch123 · 19/02/2025 23:19

My hive is set at 22. My boys room consistently shows at 24.
18 would be too cold for me🙈

paddlinglikecrazy · 19/02/2025 23:20

19 here. Off at night and only on upstairs if it’s freezing outside. Well insulated house with new roof so retains heat well.

CrystalSingerFan · 19/02/2025 23:21

Sitting here in woolly socks, warm trousers, t-shirt, knitted top, padded gilet and velvet Mistral coat. Thermostat set to 17.5c. It currently claims we're at 15.8c. It's OK.

My smart meter (turned to the wall generally ) says my bill from (presumably) midnight on Sunday is £22. I live in a 1970s two bedroom house built when warm air blown central heating was considered a good idea. So... walls and floors with vents for the air fllow and NO nice solid heat-retaining infrastructure. (Replaced with a combi boiler and radiators but still...) Sigh.

Meadowfinch · 19/02/2025 23:22

I'm with you OP, 18 degrees is perfect for the house during the day. I can make bread or do the ironing and not overheat. If I'm watching TV late at night I might pull the rug from the back of the sofa but that's all. DS is happy too.

Off at night. We live in a Victorian house with good double glazing and thoroughly insulated upper floor and lofts.

If my ex comes to the house, he whines endlessly about being cold but refuses to put on a sweater so I have no sympathy.

But then he whines if it's windy, raining, frosty, snowy, too hot, too sunny.... I realised, several years too late that he's a complete wimp. 🙄

Vaxtable · 19/02/2025 23:24

Mine comes in at 17. In the evening I switch it up to 18 but only once so far have I put it to 19. 18s about right for me

LBFseBrom · 19/02/2025 23:25

I might have it on at 18 during the night, I do usually turn the heating down before bed because it is extremely warm in my place, don't notice the temperature though. I tend to wake very early and it is reasonable but I turn the heating up, go back to bed and it's really nice when I finally get up. Usually 23/24.

Ireallycantthinkofagoodone · 19/02/2025 23:26

I also think that it makes a difference what you have become used to. I do love my central heating, and it’s obviously the norm now for most people, but I grew up in the 50’s, with ice inside the windows and frost on the eiderdown from my breath every winter. Only the kitchen was warm from the little boiler in the corner. And guess what, we survived!!

AlternativeView · 19/02/2025 23:27

I think we are over 20 between 20 and 25 it comes in am and then pm and we boost the heat in the day if we are in, the boost is for a an hour.

We pay about 170 to 190 a month...

PrepParent33 · 19/02/2025 23:28

I know I'm going to be at the extreme end of the scale here, but I find 14 degrees is perfect for me in the evenings. No heating during the day or at night. At night I like to sleep with the window wide open.

I think I may have been a penguin or a polar bear in a previous life 😂

ProfessionalPirate · 19/02/2025 23:33

This is an impossible question for us to answer because ‘18’ will feel very different in different houses, depending on the location of the thermostat (not just which rooms, but it’s height and proximity to any radiators or other heat sources) any drafts which will make the temperature feel lower, and thermostats themselves are generally not very accurate (as anyone that has used a room thermometer alongside a thermostat will know).

I live in quite a large house with 6 different ‘zones’ under separate thermostat control, and they all have to be set to different temperatures to achieve the same feeling of warmth.

XenoBitch · 19/02/2025 23:51

Mine is set to 14, and I am comfy in that. I set it to 10 when I go to bed. My ex would have it set to 22 (he had Reynaud's).

LondonLawyer · 19/02/2025 23:57

16.5 degrees on bedroom floor, 18 on living floor, I am taking no questions because this is the correct setting.

marmaladeandpeanutbutter · 19/02/2025 23:58

I have digital thermometers in some rooms. I like 19-20 in the living room, 17-18 ok elsewhere and 15 in the bedroom at night. Obviously in warmer weather the heating is set lower to achieve these temperatures.

godmum56 · 20/02/2025 00:17

Ireallycantthinkofagoodone · 19/02/2025 23:26

I also think that it makes a difference what you have become used to. I do love my central heating, and it’s obviously the norm now for most people, but I grew up in the 50’s, with ice inside the windows and frost on the eiderdown from my breath every winter. Only the kitchen was warm from the little boiler in the corner. And guess what, we survived!!

I lived in a house like that too and we all fucking hated it.

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