this post was submitted on 20 Apr 2025
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I've been meaning to ask this for a while. I saw a comment a month or so ago. Person said they keep their thermostat at like 65 in the winter and 78 in the summer. 78 seems fucking insane to me. That's too damn hot for inside. How do you sleep at 78 degrees?

Are they a lizard person or am I a baby?

Edit 1: I love all the comments on this! Never thought this post would create such discussion. Looking at the comments vs upvotes it honestly seems 50/50ish that 78 is hot for the indoors. Can lemmy do polls?

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[–] MoreFPSmorebetter@lemmy.zip 4 points 1 day ago

If I'm paying the bills the AC is set to 72 in the summer and the heat is set to 66 in the winter.

If I'm not paying the bills the AC is set to 66 when it's hot and the heat is set to 72 when it's cold.

[–] Shaggy1050@lemmy.world 4 points 1 day ago

64/78 year round. Occasionally knock it down to 74 in the summer when it's going to be really hot and the AC unit may not keep up.The house retains heat too well and bakes in the evening sun.

[–] Valmond@lemmy.world 7 points 2 days ago* (last edited 2 days ago)

23-25 in the winter (depends on humidity), switched off in the summer.

[–] AnonomousWolf@lemm.ee 7 points 2 days ago

21 during the day and at bedtime 15

[–] 60d@lemmy.ca 32 points 3 days ago* (last edited 15 hours ago) (4 children)

I set it to 291K.

Not sure what that is in feet-degrees or miles or whatever you guys use in Murca.

Edit: changed to CAPITAL K, you nerds.

Edit 2: removed the degree symbol!

[–] kkj@lemmy.dbzer0.com 2 points 15 hours ago (1 children)

There's no such thing as a degree Kelvin. It's just 291K.

[–] 60d@lemmy.ca 2 points 15 hours ago (1 children)
[–] kkj@lemmy.dbzer0.com 1 points 14 hours ago

Excellent. I'm making my high school physics teacher proud.

[–] taxon@lemmy.world 15 points 3 days ago (3 children)

That's about 523.8 °R. I prefer 531.67 °R

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[–] psud@aussie.zone 5 points 2 days ago (1 children)

Kelvins are abbreviated to capital K

[–] 60d@lemmy.ca 1 points 1 day ago

Thanks, changed.

[–] SpaceNoodle@lemmy.world 10 points 3 days ago* (last edited 2 days ago) (1 children)
[–] 60d@lemmy.ca 2 points 1 day ago

Haha nice. Out-nerded again.

[–] TabbsTheBat@pawb.social 32 points 3 days ago (2 children)

I have mine at 20~22°C. Not sure what that is in non-standard units.. honestly I'd go lower, but then it becomes a hassle for other reasons

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[–] RBWells@lemmy.world 4 points 2 days ago* (last edited 2 days ago)

Yes, 65F for the winter or lower, I hate the heater, and yes, 78F in summer, the heat pump struggles and it's plenty cool enough, feels cool compared to outside.

ETA I grew up in Florida without air conditioning. No central air until I was 24, sometimes window units. And at school no air conditioning till 7th grade and they kept it fucking FREEZING in that school so you would be going always from hot outside to so cold inside, it was worse than none.

People absolutely can adapt to the humidity and heat but buildings do not, they hold up so much better with the central air drying them out.

[–] tehWrapper@lemmy.world 27 points 3 days ago

Cheap Canadian here..

18C in cold months and down to 15C at night.

Warm months I have central air but don't turn it on and just live with whatever the temp is.

[–] Bytemeister@lemmy.world 3 points 2 days ago

Grew up in a house with no AC in the summer. Would easily hit high 80s inside during the day and hover in the lower 80s or high 70s at night.

You learn how to deal with it. Use fans to bring cooler air in at night. Close up windows and curtains (especially south-facing blinds) during the day. Hydrate frequently. At night, strip down as far as comfortable, use just a sheet instead of a blanket, and have a fan to circulate air. AC is a relatively new invention, people have been living longer in hotter areas without it. 78 degrees should literally be "no sweat".

[–] Brkdncr@lemmy.world 20 points 3 days ago

Dry climates will let you set the temp higher in the summer since your body will cool better.

I have solar/battery and heat pumps so I set my temp to whatever makes my SO happy.

-40 so I don't have to specify which temperature scale I'm using.

[–] psud@aussie.zone 7 points 2 days ago

Cool to 25, heat to 20 (Canberra, Australia)

[–] Revan343@lemmy.ca 2 points 1 day ago

Usually around 18-19, 15-16 overnight

[–] tiredofsametab@fedia.io 8 points 2 days ago

23 in a lot of the winter (though I think the thermostat is wrong since that gets us to 20.x or 21 according to actual thermometers in the room) and usually 26 in 'dry' mode in the summer. Right now, we're going for days without using them at all but, if not the heat, then the humidity will put an end to that by late May or early June.

[–] Carbonizer@lemmy.world 15 points 3 days ago (1 children)

69F (20.5C) year-round. Just for the memes.

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[–] Blackout@fedia.io 14 points 3 days ago (4 children)

AC only goes on when it's 90 out. Used it 5 times last year. People can adapt. It's like cutting sugar from your diet.

That really depends on the humidity. I can take a desert 90F or even 100F all day without AC without issue but 80F temps with a 70F dew point absolutely kills me. I lived in my area without AC for years. I never got used to it, I just stopped functioning when it got hot and muggy.

[–] SupraMario@lemmy.world 5 points 2 days ago

Sans humidity being like 85% its fine.... trying that when it's 85+ and humidity to match, you'll melt.

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[–] mesamunefire@lemmy.world 13 points 2 days ago* (last edited 2 days ago) (3 children)

Short answer:

  • 80 in summer
  • 60 in winter

Long answer: It gets over 110f so we keep it at 80 in the summer. We have double pane windows, a newer ac as well. Somewhat new insulation. Otherwise the power bill is over 1000 a month. Our bill in the winter is around 100ish and mostly gas. We keep the house at 60.

PGE is terrible. It's a little more than 60c a kilowatt now...

No that's not a typo on the prices.

[–] rishado@lemmy.world 2 points 1 day ago (1 children)

Where are you?? I live in an old crappy insulated 4bed house in VEGAS and in the summer I pay like 300-350 for AC that I set and forget at 72°

[–] mesamunefire@lemmy.world 1 points 1 day ago (1 children)

Whats your kwh rate? Is it 60c or more? Cause thats the main cause. Theres a metric ton of solar being installed last year or so.

[–] rishado@lemmy.world 3 points 1 day ago* (last edited 1 day ago) (1 children)

60c? You've gotta be talking about peak rates in like DTLA, surely?

You're telling me your base rate is 60c/kwh?

NV Energy charges me 10c/kwh

[–] mesamunefire@lemmy.world 1 points 1 day ago (1 children)

Yep base starts at 60c. Last year it was at 50 but they increased it 4 times since then.

[–] rishado@lemmy.world 1 points 1 day ago (1 children)

Holy crap buddy. Best wishes, that's brutal.

[–] mesamunefire@lemmy.world 3 points 1 day ago (1 children)

Thanks friend.

The city itself is thinking of making making its own power company. We are having record number of businesses leave. So its a brutal time. It doesnt help with the whole tarrif situation and parts becoming hard to find (like solar/inverters/etc...).

[–] rishado@lemmy.world 3 points 1 day ago (1 children)

I imagine a lot of residents are leaving too. I figured it was mostly real estate inflation but knowing that about the PG kwh price.. that must also be a massive consideration

[–] mesamunefire@lemmy.world 3 points 1 day ago* (last edited 1 day ago)

Its easier to get solar if your a resident. Also, since a lot of people here dont make all that much, they get a special rate. Below poverty line and all that.

But yeah theres a bit of movement. But Cali is still one of the better places to be at with the current climate as it is.

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[–] qjkxbmwvz@startrek.website 3 points 2 days ago* (last edited 2 days ago)

Here's January of this year. San Francisco, so pretty moderate weather


typically don't run heat during the day, and low 60s at night (if at all) during the winter. Large temperature gradient throughout house, typically.

South facing windows gives kitchen and living room a greenhouse effect, particularly in the winter, hence the large daily temperature swings:

[–] penguin202124@sh.itjust.works 9 points 2 days ago* (last edited 2 days ago)

Usually off, but if on 18°C (291.15K).

[–] Zatore@lemm.ee 9 points 2 days ago

Summer: 72-74 in the day, 68 for sleeping Winter: 65 in the day, 62 for sleeping. I love the cold

[–] TriflingToad@sh.itjust.works 1 points 1 day ago

some people in my family have sensory things where they feel slightly hotter than others. 69f for most of the year, in winter we hardly use the heater since it doesn't freeze where we live, but my room doesn't have full insulation since the garage is below it, so I have a little bathroom heater in winter.

If it was up to me probs ~71.

[–] scytale@lemm.ee 10 points 2 days ago

Summer: 77-78 during the day, 75 at night.

Winter: 70

(Not so) pro tip: Buy a stand or desk fan. What actually makes 77 feel hot is because there’s no breeze. 77 in itself is not hot. What you need is air circulation. Keeping it at 77 with a fan to get a breeze going is comfortable enough. Your electric bill will also be lower.

[–] DrainKikoLake@lemmy.ca 2 points 2 days ago

Heat to 69 in the winter, cool to 74-76 in the summer.

[–] 1rre@discuss.tchncs.de 9 points 3 days ago* (last edited 2 days ago)

I did some experimenting - I can't sleep above 67 at most, 65 comfortably.

Anything above 68 is too hot generally indoors and I begin to lose the ability to focus.

I don't have AC but my house is from the 1860s when people had fires running pretty much nonstop so is designed to keep cool, so even when it's 80+ outdoors the indoor temperature rarely goes above 70

[–] Kolanaki@pawb.social 5 points 2 days ago

70F, all year round. Cuz that's basically the perfect "room temperature."

[–] HurlingDurling@lemm.ee 2 points 2 days ago

72°F in summer / 64°F in winter

[–] k_rol@lemmy.ca 1 points 1 day ago

23 in winter and 22 in summer. Nights are set at 18 all year long.

[–] socsa@piefed.social 6 points 2 days ago (1 children)

78 during the day is fine depending on the humidity. The real trick of AC is that it brings the humidity down so if it is like 90 out and the AC is running to hit 78 then it is fine. But if it's like 83 so the AC barely runs then 78 starts to feel sticky and unpleasant.

[–] lemming741@lemmy.world 2 points 2 days ago (2 children)

Multi-stage equipment helps a ton. I hate how people tack mini-splits on their homes like AutoZone hood scoops, but their dehumidifier function is awesome in the shoulder seasons.

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[–] philpo@feddit.org 8 points 3 days ago

20°C min, 24.5°C max.

That's 68°F and 76°F in OrangeUnits.

But tbh,I don't have an AC at the moment,so the max. value is only achieved by automatic ventilation. But I has it on the same range when I was living in a country with AC.

[–] Litebit@lemmy.world 6 points 2 days ago

always in the 20-24.

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