I have an evaporative cooler it really doesn't have temperature control. It is kind of whatever the outside temperature is -20f degrees with 75% humidity.

We're in Canada so we use Celsius but I'll convert for our farenheit friends:

23C/73.4F most of the time we try to keep the heat/AC off in spring/fall when it makes sense to do so.... We seem to generate a lot of heat inside (we have a lot of computers in the house) so it has to be quite a bit cooler outside to justify opening windows. something like 16C/60F, then between the heat from everything inside and the cold outside, we tend to keep rather comfortable.

My last place was an apartment and we didn't have control over the heating. Whenever it was on, we were cooking, so we left all the windows open all winter (the super knew about the situation and recommended we do this). The valves for the baseboard heaters were extremely old, didn't have knobs, and the super said he could try to adjust them, but there's a decent chance that they could snap and flood the apartment. Nobody wanted that, so we just left the windows open. For summer, I only turned on our AC at the apartment after the haters shut off. I wasn't going to pay to run AC to cool the place down while they were actively heating it up.... I'm glad we don't live there anymore because of that, though, everything else about the place was stellar. The landlord tried to get the owner to Green light the replacement of the valves while the system was not in use (namely in summer when they turned it off) since it would be easy to drain the system and do the work, but they didn't, so year after year, Windows open in winter. It kinda sucked, but we did what we had to. I installed a netatmo temperature system and at times in the dead of winter with all the windows open, the inside temps would read in excess of 30C/86F which wasn't fun. Hanging around in boxers with all the windows open in the dead of winter, and still sweating by doing nothing at all, wasn't great.

My new place has it's problems with airflow, but it's much better overall.

68F-72F in summer 66ish in the winter. In live in the South East United States and humidity is a bitch

74 in the summer and 68 in the winter. Before I met my wife I would keep it at 60 in the winter but she wasn't having it lol (heating oil is expensive). I didn't have central air so my bedroom (window unit) I'd keep at 68-70.

I usually do 19C in the winter, and 24C in the summer, my parents do 22C (72F?) year around

Summer - cool to 76 around the house. 68 for sleeping.

Winter - warm to 70 around the house. 65 for sleeping, with a heavier comforter.

75 summer, 71 winter. Would love to conserve more but my body is a picky jerk.

77F normally

72 during the day and 68 at night.

76 in the summer and 68 in the winter

My folks keep it at 79°F during the day and 72°F at night.

There is no one right temperature — it depends on the humidity. In the winter I often have heat at 71. In the summer 68.

I'm in Denver Summer: 80° in the day, 70° at night Winter: 73° in the day, 63° at night

I like to keep my home at 16°C (60.8°F) when possible. Summers are hell.

Chiming in to say comparing thermostat settings between houses is comparing apples to oranges. Your AC is only "on" or "off," changing the thermostat setting only changes how much time it's on vs how much time it's off.

On a 100° day, the HVAC in a well-insulated house with double paned windows and solid weatherization is going to be able to maintain 77° with little effort, where a poorly insulated, leaky house may struggle to even reach 77° with the HVAC running continuously. These two houses may have their thermostats set the same but their internal temperatures and energy usage will be different, maybe even radically different

25.5 C (78F) in the summer, 21 C (71F) in the winter

Just moved into a house with ac for the first time and it is well insulated and lots of shade from trees. At night before bed I set it to 68, and in the morning I set it to 74. Even when we had 100 degree days it never got above 73 inside, so basically I only run the AC at night.

In the summer 78F during the day but I spend most of that time in the basement because that's where my office is and 68F at night to sleep.

During the winter 68F all day err' day

Cincinnati. 66 at night 70 during the day during the summer, sometimes 72.

Winter 70-72 all the time.

75 in the summer and 68 in the winter

Minimum, but it still doesn't get below 23C in the winter

For A/C I like it warmer than most office buildings, around 27°C/81°F, which means it's usually off outside of summer heat waves. My current place in Vancouver has no A/C.

Winter the heater's usually at 21°C/70°F.

In winter I light the fire, in summer I open the windows, the temperature range goes from chilly to toasty. I don't have exact numbers on that.

I don't! My windows are open all year here in Chicago.

I don't have AC and haven't really needed it this year. I'm way north in New Hampshire.

We keep the heat at 63-65f(about 17c) in the winter, but occasionally go up to 67 when it's warmer out and the furnace doesn't have to work as hard to keep it there.

Mine is set at 80 degrees during the summer. During the winter it is at 60 or maybe 65. I live in an over 100 year old dog trot style house in Alabama with only attic insulation and the original single pane double hung windows.

65° while I sleep, 68°-70° while I'm home, off while I'm not