TF140-DC Tranquil bathroom fan with its high efficiency DC motor offers whisper quiet exhaust. The fan will operate at the desired airflow rate determined by the toggle switch settings. The toggle switch position determines the desired airflow rate, ranging from 90 to 140 cfm.
Features and Benefits of TF Tranquil Bathroom Fans
Efficient DC motor
Superior ventilation and efficient performance
Whisper-quiet, under 1 sone
Clean, simple grille design
Galvanized steel housing
Install to joist with mounting frame
Built-in backdraft damper
120V, 60 Hz operation, single phase operation
Automatic reset thermal overload protection
Available to fit 6” duct
Fan Dimensions & Performance Curves
Select the Charts / Diagrams tab below
How much airflow is required?
HVI recommends ventilation rates based on 8 air changes per hour. For most bathrooms this works out to 1 cfm per square foot of area, with a minimum of 50 cfm.
A bathroom less than 100 square feet:
Calculate 1 cfm per square foot of floor area. A minimum of 50 cfm is the required ventilation rate.
A bathroom larger than 100 square feet:
To calculate the proper ventilation rate, add the cfm requirement for each fixture; toilet 50 cfm,shower 50 cfm, bathtub 50 cfm, jetted tub 100 cfm. Note: For proper sizing,the static pressure (SP) needs to be calculated.
What is HVI?
HVI, also known as the Home Ventilating Institute, is an independent non-profit organization that certifies fan performance characteristics and provides HVAC guidelines for consumers. Learn more about HVI at HVI.org.