I think I've posted to you before regarding my good luck with these heaters so I won't repeat myself.

Radiant heaters are most efficient when they operate at a constant temperature with minimal flucuation. They are not the best when you want to drop a room temp by 10* at night, for example. I would try the lower setting and see how that works.

Also, increase thermal mass in the room as much as possible. Piles of bricks, gargage cans full of water, or just about any furniture.

Line the walls and ceilings with Reflectix if possible. If it's a finished area then get a paint with a radiant barrier added.

What type of floor is in the basement?
-----
Current snakes:

0.0.1 Gonyosoma oxycephala - Java locale (green)

1.2 Gonyosoma oxycephala - Jave local (green)

2.2 Gonyosoma janseni - Seleyar locale (all black)

1.2 Gonyosoma janseni - Celebes locale (Black & Tan)

[ Show Entire Thread ]