is loud enough some one will know its there and look up but not so loud that any one could in any way reasonable complain about the noise In less they have some sort of condition were any sound bothers them. BUT if thats the case its there responsibility to go live in the middle of a desert or some place were there are no sounds at all to bother them. Tho I have never been any place on this earth that is so quite there is not some noise even if its just the hum of the earth or nature.
Tho them start up beeps ya they are loud and also piercing do to there high pitch they dont get absorbed by much like more deeper bass sounds would.
I to dont even dare start mine up for any thing when my old lady is sleeping so that I dont get accused by any one of waking up grumpy
No i did not wake up grumpy..... shes still sleeping lol