2:58
Room tone - boiler room in a basement - HVAC system humming, neon light buzzing, and water pipes on the ...
1:04
Kitchen with boiler turned on and mechanical sounds.
2:38
Roomtone, ventilation room - noisy fans, pipes rattling. (2)
1:28
Roomtone, ventilation room - noisy fans, pipes rattling (1).
0:33
Boiler room buzzing.
0:29
Boiler room sizzling and hissing with water
1:02
Large walk-in freezer room tone or drone.