Hi
Can anyone please advise on where best to purchase wind machines...its for a small scale production (150 seater) and I'd like the wind effect to be felt by the entire audience.

Well, how much wind do you need? A "real" wind or just a sensation that the air is moving?

Wind machines tend to be quite loud. I have used-in magic and in TV/film-a Bionaire fan that's intended for domestic use. It has a surprising amount of power-but in max is kinda loud as well.

If you have 150 people that more likely are spread out than standing in line, you'd need a pretty large fan-or many smaller ones. Again, noise would the problem. Much depends on how much wind you want.