The conversions are inexact but I thought it would be better to use the rough Fahrenheit equivalents, since that's what would be available on thermostat settings.
@evan I'd "say 22, but..." hahahah
This is because sometimes the AC in some regions of Brasil gets the air too dry if you set it low enough in relation to the outside temperature.
@evan Around 20C seems like a happy medium to me. Depends a bit on the house and the location of the thermostat.
We got a heat pump a couple years ago and I nerded out on the optimal settings to take advantage of Ontario's time of use rates (letting it dip a little lower during the evening, trying to get it just above our normal setpoint before the peak time of 7am). Was a fun little exercise but I don't think it really saved that much money.
@evan People responding about AC settings vs people responding about heating settings.
@evan current winter settings (central thermostat control connected to individually adjusted room radiators, Germany):
Day 19C (~66F)
Night 16C (~60F)
We try to both keep the radiators off in rooms we are not using and also keep those doors closed. It only runs a few months out of the year as it's heating only, we don't have central air conditioning/cooling.
@evan I am a 68°F, 20°C setter. My wife prefers 70°F, 21°C as a baseline. It also doesn't help that our thermostat is in a warmer room, so 68°F at the thermostat can be 65°F in the family room.
@evan lived my childhood in a third world country where central heating was ranging from not very reliable to missing for months at a time.
Living through winters without any heat I think that in my adulthood, even though I'm not rich, I can still afford the luxury of 23 Celsius during the day so I can do my programming in a t-shirt.
@evan You and I have reverse gender stereotypes when it comes to home heating: I always want to turn it down! Putting it over 20C bothers me both physically and emotionally!
@evan Poll is missing the time and location dimensions, I am a 21c during the day for living areas, 19c for office, 18c for bedroom at night 😂
I read that the the architect for a CIA* building asked how many people would work there, for the heating and cooling requirements. The CIA wouldn't say.
They guessed, guessed wrong, rooms were too hot or too cold. A retrofitted system of thermostats in each room made the problems worse.
They said don't touch the thermostats, and put them in locked plastic boxes.
That kind of lock didn't stop people fiddling with them. This was the CIA, after all.
* Central Intelligence Agency
@evan in the winter it's set to 19C/67F and in the summer it's 24C/75F, though we can usually get by with not running the AC by keeping windows open overnight and then sealing the house up around 10am
@evan Live in Vermont and our thermostat never goes above 64ºF / 18ºC.
Then again, I live with knitters and have so many warm clothes :)
@evan I never set the thermostat above 20ºC, but in the summer I'll let it naturally drift higher a bit and try to just use fans and the natural breeze
But I also hate being hot so sometimes it's a matter of closing things up and turning on the AC
22° C, but only because it's a compromise with my partner who seems to have lost all her Canadian genes and swears that this is still cold.
@evan We keep it off — wearing an extra layer proved to be more comfortable and less expensive.
@evan i'd set it at 22° but that doesn't get me to 22°.
So I monitor a tiny indoor thermometer, and set the thermostat to whatever does the job - which varies, depending on outdoor temp, sunny/cloudy, wind direction and humidity!
@evan 20, but just part of the time an for certain rooms. Bathrooms are actually at 21° in the usual hours when people shower in our household. The heating also follows electricity price and tries to heat on the cheap hours.
@evan Do all the 20°C people like to sit around fully clothed and/or in sweaters at home? And it's like over half of the responses at the moment...
@evan in the summer it's 72. In the winter, 68. That's during the day. Nighttime is higher and lower, respectively. Because it's winter now, I chose the first one.
@evan my wife insists that 18.5C is the highest we're allowed to have it at, and that at night it should be set to 14.5C to ensure the pipes don't freeze. My aunt thought that anything under 21C was "freezing*.
Living in the UK.
@evan 20 for comfort level, 17 for setback. Multiple zones in our house, all on seperate timers as different people use their rooms at different times. No AC, we are in UK 🤪
Domoticz ftw !
The weirdest thing about this question is that it doesn't specify the season. I set mine at 67 or lower for heating in the winter, and 73 or higher for cooling in the summer. Although lately I've had to switch modes on the same day...
@evan I set it lower in winter and higher in summer for efficiency. This is common in the USA. Unclear how to answer!
@evan doesn't this vary between seasons? I think you assumed winter, but I'm currently in the southern hemisphere and I assumed summer :)
@evan this poll was tricky as I have various settings for different times of day and different zones in my house

📎