In an international community as this is, I think we need to know that people in different countries both can have different standards on what is normal, what is frugal, what makes sense or not - and also different knowledge on how things work, especially if they are not used to it.
If you are not used to A/C for instance, you might not know that having a window open is counterproductive re. the A/C-unit working properly or that it increases cost. In some countries opening a window is both normal and the habit you’d have to air out or cool down, for instance. So needing to close the window to get it cooler wouldn’t make “sense” as such, you’d need to learn it - and even then might forget in the moment. I guess even a person that knows could forget or be absentminded, especially if something happens (doorbell, pet, telephone..)
While the official health advice is to keep it 18+Celcius indoor, it seems some places it is normal for some people to have indoor-temps. way lower, or not having it as a general temperature, but sitting in their coat under a blanket on the couch with a mobile heater with icicles forming on your nose.(UK, do you hear me…
. Sorry. I just had to make a joke…
) While others might not think much about utilities, and insist on being able to comfortably prance around indoor in a t-shirt and still feel warm like under a duvet. “Mindful, “comfortable” - what is it, really? How long is an elastic band?
So to navigate this, I think we need to be really accurate. Explain it to me like I’m ten:
“Air Conditioning:
Set the thermostat to a comfortable 24-25°C (75-77°F). Each degree lower can significantly increase the energy bill.
Turn off or set the temperature higher when you leave the house (there’s no need to cool an empty home, it will quickly cool on your return).
Use fans to circulate cool air, allowing you to set your A/C at a higher temperature while maintaining comfort.
Heating:
Aim for a cozy 20-21°C (68-70°F) in the winter. Before adjusting the thermostat, consider putting on a sweater.
Turn down the heat when you leave the house or go to bed. It will save energy, but also give a good nights sleep. You’ll find extra blankets :where: if you need it.
General tips:
Drafts from windows and doors can affect the temperature and cause the A/C or heater to work harder and possibly cause damage. Close windows/doors while using the A/C to maintain efficiency and comfort.”
As a host, you can consider a programmable thermostat, and for instance have day/night and week programmes. But do take into consideration that while you might lower the temp. during the day because you are at work, a sitter might be home during the days of the week. This change of pattern will in itself make the energy bill go up, even if the sitters are as frugal as you are - so please take note.
You can consider giving the sitters access to monitoring the consumption if this is avaible in an app or similar.
You can consider sharing your consumption with the sitter, and make an agreement that they can chip in if they would like to use more. However, a sitter should IMO always be able to use heating and such as is adviced by health organizations. When the general advice is 18+ C, you can’t reasonably expect an unpaid voluntary sitter in an equal exchange to endure 14C in the midwinter.