Thing is, I really don't want a wire dangling out of one of the air vents so my idea, which I'd appreciate opinions on, is to get to the pipe behind one of the vents and introduce the sensor there, in so doing, being able to have constant vent temperature displayed without the dangly wire.
First of all, is it feasible or a non-starter and if a good idea, what is the simplest way to gain access to the pipework behind a vent?
Thanks for your opinions