What are the silent air pumps (but want a big one)?

[Homeslice]

So far as I can tell, there are basically two types of air pumps. The ones that are almost silent or at least very quite, and the ones that can pump out a ton more air but make a TON of noise. I have a couple of the latter types, like this one:

https://www.amazon.com/Simple-Delux...?keywords=Pond+Air+Pump&qid=1644551268&sr=8-7

But they make too much noise for in the house.

So I am looking for the more quite kind, but one that puts out a lot of air - i.e. as much air as possible but still relatively quite. Can anyone let me know what type of air pump that is (and what the loud kind is I linked above, so I can avoid those!), and if anyone has some suggestions to some of the biggest around of that type that would help as well.

Thanks!!!

 

[BigManAquatics]

So far the quietest bigger pumps i have used are made by Danner. I have the AP-4 on a couple different tanks, pretty quiet compared to most 2+ outlet pumps i have used. Got both on amazon.

 

[MrMuggles]

Even the quiet ones are not quiet. The only way I was able to eliminate the noise is to enclose the pump in a sound dampening container or cabinet of some kind.

 

[Islandvic]

Ehiem's are supposed to be quiet