I set my newer one to 25,and very occasionally to 24.This cools right up through the hall to my bedroom!! Amazing really! I do have overhead fans though,which really help to circulate the cool air! The old one which is in my 3-steps-down tv room is only ever on Low,and 6-to-7 out of 10,as it is very efficient and I have to often turn it to Fan Only as I get way too cold otherwise! I don't tend to use the Air con at night unless we have been having a major heat wave(like last week when Townsville got up to 39!!!),and then I will leave it on if I am watching TV.... I cannot sleep in it at all,ever. Hence I am hopeless in hotels,and always requesting extra blankets!!!
My house is exceptionally well insulated;far more than other homes I know of.....so if I turn my Air Con on LOW at 10.30 or 11 a.m. it never needs to work itself to death trying to remove heat which has been building up in the house.By evening the house is deliciously cool and stays this way while I sleep,and for a few hours into the morning. I must admit that one thing I am very particular about is cleaning the filters! If these are kept clean,then the motors work SO very much better and also last longer before the units need to be replaced.
I don't drive,so I have no idea what temp my neighbour sets his a.c. in the car to when we go shopping!
sorry -didnt realise that not all cars have a set temperature -mine is like a proper air cond where you can set the temperature but I know they used to be just high, or low without a temperature.
I have to keep turning it off at night as my dogs dont like it!!!
jonaj, I have had professional air-conditioning people tell me that an air-con works best in the summer if you set it to 24. Otherwise, it can struggle and be worse-off in the long run - if you set it to a lower temp, 16 especially.
Our air conditioner can be set to manual or auto. We usually have it on auto so it adjusts the temperature and the amount of cold, depending on the temperature in the house. We can override this by putting it on the manual setting, if we think it is too cold or not cold enough. Usually the air conditioner adjusts itself adequately and we don't have to use the manual setting. The same applies for our ducted heating.
Mine is set on Auto with the swing mode operation though it is rarely used except when really hot as all rooms have ceiling fans and they are used instead. When my second daughter was born she was an allergy child so doctor suggested ceiling fans and not air conditioning. The air conditioner was installed about 5 years ago because as we get older, we feel the heat more so it's used only when needed. My car temperature is set to 23 but either side can be adjusted up or down if wanted.
We set the air-conditioner at 24' C as this is regarded as the most economic temperature.
We close all windows and doors and find this is by far the best way to reduce the temp. quickly and effectively.