I have a 25' cathedral ceiling and am trying to figure out the best strategy for adding ceiling fans to aid in winter heating. This isn't a question about mounts - I have a rough idea of the different mount options to put the fans either directly at the apex or on the angled ceiling.
Rather, here's what I'm struggling with: at 25', the longest fan extension I've come across doesn't get the fan to the "ideal" of 8-9' above the floor. Plus, having a super-long extension sounds as if it might look ugly.
I can also consider the option of adding fans to both sides of the angled ceiling. If I did that I could easily get the fan to the desired height. For symmetry, I'd probably want to put in two fans: one on either side.
My question has to do with the efficiency of one approach versus the other. My understanding is that for winter purposes, you draw the air up and push towards the ceiling in order to promote circulation. If I have two fans at equal spots on either side of the apex, will I somehow impact the circulation? Will the air going up from each cancel out the effect of recirculating the air back down?
Alternatively, if I go with the single apex-based mount, how much efficiency do I lose by having the fan be more like 15' off the ground rather than the recommended 8-9'?
Are there alternate ways to think about the problem?
Thanks for any advice,