Is your Bathroom Exhaust Fan squealing, squeaky, or noisy when you turn it on? Does it sound like something hitting or rubbing? Most likely you do not have to replace anything. Cleaning, adjusting, or lubricating your bathroom ceiling exhaust fan will usually fix the problem.
Replacing a noisy bath fan. Newer-style bath fans, on the other hand, are so quiet you can hardly hear them running, and they cost very little to operate. It’s easier than you think to swap out that noisy, inefficient bath fan, especially if you choose one that’s designed to be installed without ripping out the bathroom ceiling.
Perhaps it’s a regional thing as i can assure you most fans aren’t designed to be deliberately noisy, at least here in the UK, the trend is towards whisper quiet fans that operate at around 26dB which is barely audible in most bathrooms.
A noisy bathroom fan can be annoying and distracting. Sometimes you’re stuck with the sound, but sometimes it’s an easy fix. If you’re uncomfortable working with electricity, many fans simply plug into an outlet hidden in the ceiling
For his utter genius, the guy who invented the noisy bathroom exhaust fan should win the Nobel Prize. With one simple device, he solved two critical issues that had distressed bathroom users around the world for centuries.
This is why the low noise fans often have very large (eg. 5″) duct connections. Larger duct is more expensive and harder to install. Note that adding ducting will ALWAYS make the fan louder than no duct, but you just have to accept that because duct is absolutely necessary.