I just had a den build onto my house.
I really wanted to have a small room to be able to do my own things in. Like watch TV, read books and just be away from the family alone on certain days. With it being the beginning of winter, it tended to get a little chilly in the den, even with the central heating system pumping away. They were not able to get extra air flow and air vents into the built on den without me paying several grand more, which I was absolutely not going to do. So I went out and bought a portable space heater instead. The portable space heater does a really great job in heating up my den and keeping me warm. It is not that big of a room or space, so the portable space heater actually heats it up really fast. I probably only have to have it on for about 3 minutes before the entire room is all good and the perfect temperature for me. Portable space heaters now days actually heat up large rooms pretty fast as well if you turn the thermostat on them up a bit. It is really amazing how much power these portable space heaters have today. Back when I was growing up the portable space heaters that were on the market would barely heat a small room none the less a big one. How the times have changed! I was happy though to be able to get away with a portable space heater for heating in my brand new den.