I am planning to buy an upright acoustic piano in the future. But before I do, there are some points I need to clarify.
I initially did not want to buy an acoustic piano, because I was afraid of all the care it required (tuning, humidity, temperature, awkward family members, animal, etc.), but then I realised many of them apply for a digital piano anyway.
Tuning is simple. Humidity level can be easily monitored using a device. Family members and animal can be dealt with by having the piano in a room that isn't often visited.
But I have no idea how to prevent temperature from rising or dropping to critical level during Winter or Summer. I mean, I can have the piano in a room without windows and good isolation. But if the air itself is burning hot, there is nothing I can do to keep the piano room cool (beside having an air conditioner, but I cannot afford having an air conditioner just for the piano).
What are the actual dangers of having a room below 10°C or above 35°C for a piano? I am afraid of seeing my piano wither just because I can't keep the room below 30°C.