Recorded with rode videomicntg. Raw sound so you can edit as you please. Me exhaling through a large tube to create a kind of weird/odd background noise.
Throbbing machinery sound, made from recording a ceiling fan that was making a weird noise. It was recorded with a small sony digital recorder about three years ago.
I have turned up the bass of this recording of an oscillating fan to give it a "warmer" feel to it. Recorded with sony hdr pj260v then edited using audacity.
Here is a captured sound of a boiler in a neutral state and turning on, near the end of the clip. I personally used this for the background ambience of a spaceship. Enjoy.