Well, these artistic pieces are both. Designed by Karim Rashid, the artwork radiators from Caleido fulfill two purposes in its one existence. It decks up your walls and heats your house too. The one on the top is the Therme home radiator, which gives the appearance of modern art on a canvas. The second one (below) is the Geiger radiator, which is actually a computer-generated design on a black background. Perfect for home decor and home heating, these fall in the category of priceless pieces.