What is a good cfm for a bathroom fan?
What is a good cfm for a bathroom fan?
For most bathrooms this works out to one CFM per square foot of bathroom area. For example, a 7′ x 10′ bathroom would require a 70 CFM fan. A 50 CFM rating is recommended as a minimum for bathrooms 50 sq. ft….Bathroom Exhaust Fans – A Consumer Guide.
| Bathroom Size | Minimum Ventilation (CFM) Required* |
|---|---|
| 50-100 sq. feet | 1 CFM per sqare foot of floor space |
Can a bathroom fan have too many cfm?
It is OK to get a 20-30 % higher capacity exhaust fan than specified by the CFM calculator. A 20-30% stronger bathroom fan will exhaust the moist air slightly faster. Anything above that is simply wasting energy since the water can’t evaporate fast enough. It makes no difference if the bathroom fan is 80 or 300 CFM.
Is more CFM better bathroom fan?
The bigger your bathroom, the higher the CFM rating you’ll need. A fan should have a CFM rating high enough to replace the air in your bathroom at a rate of eight times per hour.
Is it better to have a higher CFM?
A: Airflow quantifies the amount of air a ceiling fan delivers and is measured in CFM which stands for cubic feet per minute. This means that the higher the CFM, the more efficient the fan, and the more air it moves.
Is 80 cfm enough for a bathroom fan?
In general, choose a fan that can move at least 1 CFM per square foot of room. So, for an 80 square foot bathroom, select an 80 CFM fan. For medium-sized bathrooms, use 80 to 99 CFM bath fans. For large bathrooms that are over 100 square feet but under 150 square feet, use over 100 CFM bath fans.
What does CFM mean on a fan?
cubic feet per minute
A: Airflow quantifies the amount of air a ceiling fan delivers and is measured in CFM which stands for cubic feet per minute. CFM measurements are taken when a fan is on high speed, then that number is divided by the watts used. This means that the higher the CFM, the more efficient the fan, and the more air it moves.
How do I know what brand my bathroom fan is?
How To Find My Bath Fan Model Number
- First, remove the grill cover to reveal the fan housing within the ceiling.
- Next, locate the information sticker, engraving, or stamp on one of the interior walls of the housing.
How do you read a date code on a Broan fan?
- The date you supplied on the 413004 read as follows: The first two numbers are the year in reverse (2002); the letter “E” corresponds to the month (May); the “18” is the actual day; the “H” stands for Hartford. Broan-NuTone Customer Support. Manufacturer · August 7, 2020.
- 40J21H. Linda K.
- 40J21H. Linda K.
DOES CFM matter for fans?
Cubic Feet per Minute – or CFM – determines the amount of air that a fan can move through a room while operating at the highest speed. The larger the space, the higher the fan CFM must be in order to efficiently cool a room. CFM for fans is a critical measurement for determining if a room can be cooled.