In the house that I currently live in there is no central heating or AC.
The house is old and may have been built in the 1940s and there is lead paint on the windowsills.
The need for an AC is very important in the climate in which I live. The shade from the large oak tree in the backyard really helps the house cool. Without central AC we have been able to manage with window unit AC‘s for the past five years. Window unit AC’s are much easier to manage in terms of replacement and repair. Replacing a window unit AC is much cheaper than repairing a central AC unit. I’ve always been very happy with the window unit AC and how they cool only one room at a time. Not having central heat or AC has never been an issue because we’ve always had space heaters as our primary source of heat. The space heaters are great and do very well at heating a room.Heating and cooling only one room at a time is very cost-efficient and saves energy. Our energy bills are much less than they would be if we had central heating and AC. Saving money on energy bills allows us to travel more because we are not spending as much on central heating and cooling as many people. The space heaters are a totally fine source of heat in my opinion. I enjoy sitting next to the space heater while the rest of the house is chilly in the winter months. The only problem with having a space heater is that it can cause a fire much quicker than a central heating unit would.