Today we finally managed to set up an appointment with the guy from whom we will (most likely) buy the infrared heaters. He brought with him a small heater, as a sample, to see what the fuss is all about:
The heaters come either with different designs on them (as in the picture), with glass/mirror surface or just plain white. From what we’ve read and from what the guy explained, the whole thing works as follows. Infrared heaters work on the electromagnetic energy tranfer principle, and not by directly heating the air like a normal heater does. The heater emits infrared energy which is absorbed (i.e. heats) the walls and the stuff you have in your room: furniture, big objects, etc.
The walls and furniture reflect the infrared energy but they also store it, thus getting warm. The heating is done without heating the air directly which is an advantage because the convection effect is almost completely avoided. That means there is much less air movement throughout the room, which moves the dust and creats pockets of cold and hot air; the room is uniformly heated. Besides, this is much better for us since it appears that human body like better indirect heat. Something like this:
The heaters themselves are basically panels several centimeters thick which you simply connect to the electrical grid (normal power socket). They have also built in termostats so that you can maintain a constant room temperature.
We also went to the house where we measured the rooms (again) so that the guy can have a complete overview. The power of the heater is chosen based on the volume of the room which needs to be heated. And that was basically it. Now we wait for an offer which will empty our bank account with the complete costs.