Master Flow^® Whole House Fans

Master Flow^® Whole House Fans are smart energy savers for any climate where air conditioning costs are a concern. They allow you to beat the heat by forcing hot air out of your home while bringing in cooler outside air. Master Flow^® Whole House Fans are an important part of a complete home ventilating system! (Designed for homes over 1,000 square feet.)

Master Flow^® Belt Drive Deluxe Whole House Fans
30BWHFS

Superior Air Exchange (versus standard models)...
For maximum impact on cooling costs
Quieter Operation...
Belt drive isolates motor noise and vibration
Efficient, Longest-Lasting Motor...
1/3 hp permanent split capacitor design for added power and longer life
Better Appearance...
Includes super-quiet automatic white ceiling shutters
Convenient Operation...
Includes two-speed wall switch (rather than pull chain)
Safe...
U.L./U.L. Canada listed

Master Flow^® Direct Drive Standard Whole House Fans

WHFS24M

Efficient, Long-Lasting Motor...
1/4 hp permanent split capacitor design
Easier To Wire...
2-speed pull chain switch controls operation (no wiring through walls required)
Better Appearance...
Includes super-quiet automatic white ceiling shutters
Safe...
U.L./U.L. Canada listed

Master Flow^® Tandem Whole House Fan

WHFTAN1

Easy Installation...
Easily installed on all standard joist centers, no joist cutting needed
Simple to Operate...
2-speed operation with remote control
Great Looking...
Virtually invisible in the ceiling
Safe...
Tested and approved by ETL for US and Canada

Tandem Whole House Fan

Accessories/Replacement Parts For Whole House Fans
Part	Description
S24	24" white shutter (Fits WHFS24M)
S30	30" white shutter (Fits 30BWHFS)
BWS2	Two-speed fan control switch with cover plate (included with all belt drive models)
WHT36	12-hour timer

Drive Type	Model No.	Size	HP	CFM	For Homes Up To:	Recommended Exhaust Vent. (Net Free Area in Sq. In.)	Ltd. Warranty Term/ Labor Protection Plus Plan†
Belt	30BWHFS	30"	1/3	6000	3000 sq. ft.	1152	10 yrs./5 yrs.
Direct	WHFS24M	24"	1/4	4500	2500 sq. ft.	1008	10 yrs./5 yrs.
Tandem*	WHFTAN1	16" x 24"	1/15	1600	2500 sq. ft.	800	5 yrs./2 yrs.
†See ltd. warranty for complete coverage and restrictions *Requires a minimum of 500 sq. ft. of attic space to operate