What switch do you use? I have PoE wifi APs throughout the house, but I bought an Aruba switch and it's super noisy tbh. Fine for me because it's in the basement, but I couldn't recommend it
At one of our offices (it is not a large office), I have a 24-port Netgear POE switch running the show. If it has a fan inside (it may! there's cutouts for fans on the sides of the chassis but I have not looked inside), I've never heard it.
It fit the price-performance curve for our needs several years ago when we eventually outgrew the previous Netgear POE switch...that was also apparently fanless, and that I installed in 2007.
IIRC, it is a GS724TP. It's running a dozen cameras and some access points, and almost all of the rest of the ports are filled up with computers and printers and other Ethernet stuff. No issues at all to to report so far.
(A used enterprise switch with serious fans may be cheaper and/or more featureful and/or more reliable, but do we need that kind of noise at home? We sure don't need it at that small office.
I've also installed some fanless Cisco POE switches with big heatsinks (and dual power supplies, each fed from different sources) on some high-dollar projects where ultimate reliability was kind of a big deal, but... sheesh.
If one of these installed Netgear switches dies in one of these low-risk environments, I'll just patch things up for now and get a replacement coming under warranty.)
some netgear 8-ch poe switch. i don't recall. it's been on and running for about 8 years with no issues, way up near the ceiling of my garage, covered with dust. its plugged into a wrt1900 router i bridged via wifi to my main router.