Master Flow® Replacement Motors and Shutters are available through Home Depot.
Master Flow® Whole House Fan 30"‑ Belt Drive Specs
Master Flow® Whole House Fan 30"‑ Belt Drive Docs
Master Flow® Whole House Fan 30"‑ Belt Drive Videos
Why Master Flow® Whole House Fan 30"‑ Belt Drive?
Pull cool, fresh air into your home and force hot, moist air out to help save on cooling costs. Includes 30” aluminum shutter and two-speed wall switch (rather than pull chain).
EXCELLENT AIR EXCHANGE
EFFICIENT & LONG LASTING
FAQs for Master Flow® Whole House Fans
- The 30" Belt Drive (30BWHFS) - 3.7 amps (H1) 2.3 amps (Low)
- The 24" Direct Drive (WHFS24M) - 4.2 amps (H1) 3.2 amps (Low)
The motor would seem to be overheating, check the requirement for attic square footage and exhaust. Not having enough may cause the motor to run intermittently. Too little exhaust are can overwork the motor, causing it to overheat and shutdown.
- Belt Drive (30BWHFS) - 1152sq. inches NFA exhaust vents
- Direct Drive (WHFS24M) - 1108 sq. inches NFA exhaust vents
No, Master Flow® Whole House Fans are designed to be installed in a horizontal ceiling.
Master Flow® Belt Drive Fans use an A35 belt, available at most hardware stores.
Still have a question about this product?
Fill out a warranty or technical question form below and a member from our team will be in touch.
Warranty QuestionsTechnical Questions
See Master Flow® Powered Ventilation Products Limited Warranty for complete coverage and restrictions.
Visit the Attic Ventilation Calculator for details.
Note: Always have a balanced ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation.