# How many sones is a quiet bathroom fan?

## How many sones is a quiet bathroom fan?

1.0 sones
Bathroom fan sound levels are measured in sones: 4.0 sones is the sound of standard television operation; 3.0 sones is typical office noise; 1.0 sones is the sound of a refrigerator; and 0.5 sones is the sound of rustling leaves. For quiet bathroom ventilation the fan should be rated at 1.0 sones or less.

### Is 3 sones loud for a bathroom fan?

The short answer: fans rated at 1.5 or fewer sones are the quieter models, while 4.0 sones is common for loud fans. For the softest bathroom fan noise, focus on models with 0.5 or fewer sones.

What is the best sones for a bathroom fan?

Typical bath fans range anywhere from <0.3 sones to 6.0 sones. Below is a chart detailing what sound level you can expect out of a certain sone level: <0.3 sones: This is the lowest possible sone rating for a ventilation fan. At <0.3 sones, you won’t even know the fan is running (maybe like my hotel experience?)

How many sones is considered quiet?

That said, most consider a sone rating of 1.5-2 to be soft enough to be considered “quiet.” This is still louder than that quiet refrigerator, but it will be very acceptable to most people. If you have your eye on a fan with a higher rating on the sone scale, you might wonder just how loud it really is.

## How loud should a bathroom exhaust fan be?

Most bathroom ceiling fans rate 1.5 to 5-sones. That means reducing the noise starts when you buy the bathroom fan. The smaller the sone number, the quieter the fan. You want a low sone number so the bathroom fan is quiet, but you want to make sure it’s going to move the air.

### How do I calculate CFM for bathroom exhaust?

The rule of thumb is that you need at least 1 CFM per square foot of room area. To determine the square footage of your bathroom, multiply the length times the width. For example, if your bathroom is 6 feet wide and 9 feet long, its square footage is 54. Therefore, it should have a fan rated for at least 54 ​CFM.

What is the best CFM for bathroom fans?

How many sones are in a decibel?

Sones are used to measure noise, such as fans, which includes kitchen fans, bathroom fans, and those found in your range hood. One sone is equal to about 1,000 Hz with a sound level about 40 decibels above a normal reference level….Defining the Sones Rating.

Sones Decibels
2 37.99
3 43.84
4 47.99
5 51.21