Rosie, I don't know what type of radiators you have, but there is a huge difference between types. Here and at the countryhouse in france it's the water filled ones. The heat is gentle and doesn't have too much of a drying effect. In our now ex apartment in Lyon it was electric heaters, and there is was impossible to leave a plant above or near it. The heat is more intense when it's on, and extremely drying.
__________________ Camille
Completely orchid obsessed and loving every minute of it....
Wow, you guys are awsome, so many replies, thank you!
The radiator is not an electric one, it functions with boiled water from the central heating. The heat that comes from it's nothing really radical, i have my orchids sitting in humidity plates and mist them with distilled water whenever i am around.