As several of my forced air heating units have died over the past few years, I haven't been able to afford to replace them, so two of the bedrooms are the only rooms that have heat. Fortunately our winters in the PNW don't have many nights below 20F. Of course, the cats crowd into the bedrooms and become lumps under the covers. I grew up in a home without central heating and well remember ice on the inside of my bedroom window and getting dressed under the bed covers, so I can cope. I don't have A/C, although plenty of new homes in the Seattle area are being built to include that feature now. I'll just move down to the cooler daylight basement when it gets unbearable upstairs in August.