Please don't make assumptions on something you don't know anything about.
Even many northern US states (around the same Latitude as Madrid, north), on average, are 30-35+ every day during the summer and 0C to -10C in the winter. Many Canadians have air con.
So yes, heating and air con is a requirement in many areas. I live in a northern state, and we regularly have full weeks that are 38-40C.
Hehe, you also described Madrid and basically the center of Spain. From -5 to 45 extremes. More normal is around 0 in colder winter days and 35+ in hotter summer days. 36 today.
