22 April 2022
Generally, the pumps with thicker housings are quieter and, depending upon what noise you hear, the motors can be the source of it.
I could always hear my pool pump indoors when it came on; it is located outside of my kitchen window and there was a constant humming sound when it was running. I switched to a variable-speed motor last year and now I can't hear it at all indoors.
To be fair: the variable-speed motor seems to make as much noise as the old single-speed motor when I stand next to it, but it is not the deep humming sound of the old motor. The sound (to my ears) does not "travel" as far as the old motor's noise did.