Competitive Cross Reference

ABOUT DRAFT INDUCED BLOWERS
OEM/COMPETITOR PART# OEM MODEL# REPLACEMENT PART#
A.O. SMITH REPLACEMENT WATER HEATER DRAFT INDUCERS
7021-10770 183505-000 W2
7021-10910 183381-000 W4
BRADFORD WHITE REPLACEMENT WATER HEATER DRAFT INDUCERS
119388-00 265-45583-00 A977
7021-9764 239-4061 4-00C W6
7021-10712 239-42133-00B W5
7021-12654 239-45584-00 W 11
7021-12654 265-45584-00 W 11
FASCO
®
REPLACEMENT WATER HEATER DRAFT INDUCERS
7021-10060 W1
GSW REPLACEMENT WATER HEATER DRAFT INDUCERS
7021-8347 63217 W7
7021-9756 63172 W8
STATE INDUSTRIES REPLACEMENT WATER HEATER DRAFT INDUCERS
7021-10548 0012400500 W9
7021-11086 0012400540 W10
Many of the new energy-efficient gas furnaces use induced draft blowers to control flue gas.
All induced draft blowers incorporate some type of signaling device to alert the furnace that the
induced draft blower is operating. Some use a sail switch in the exhaust air stream. Others utilize
a centrifugal switch or electronic sensor built into the motor, and some use a static pressure tap in
the blower housing. All blowers are intended to provide air flow prior to ignition.
In today’s furnace industry, draft inducers are becoming a common replacement part. Since these
furnaces are being designed with specific induced draft blowers, it is very important to use exact
replacements matching the original blower for safety reasons.
These blowers play an important part in controlling the availability of gas to the burners. Most
blowers will employ either a centrifugal switch, electronic sensor, or a vacuum tap to generate
a signal to the gas valve that the induced draft blower is operating. This feature is necessary
to prevent the gas valve from being turned on prematurely or in the event the blower does not
operate properly.
These blowers control the removal of the burnt by-products. Therefore, only replacement blowers
made for specific furnaces or water heaters should be used for these replacements. The following
paragraph describes why.
The blower is designed to produce a certain amount of air-flow measured in CFM (cubic feet per
minute). The airflow in some furnaces is needed to create a specific amount of vacuum at the
vacuum tap mentioned above. If the replacement blower is not the exact one needed but “looks
close,” it may produce a lesser vacuum at the vacuum tap. This may not allow the furnace to
operate since the furnace will not think the induced draft blower is operating.
Water Heater
Draft Inducer
Trademarks and trade names of OEMs are not owned or controlled by Regal
Beloit Coporation unless such ownership is expressly claimed on the back
cover. The rights associated with those trademarks and trade names remain
the property of their respective owners or licensees.
Locate the OEM part or model number on the draft inducer you need to replace and use this simple guide to find the FASCO
®
direct replacement
draft inducer. Every effort has been made to ensure the accuracy of this reference guide. Design changes may result in different operating charac-
teristics or dimensional changes from one manufacturer to another. Therefore, Regal cannot accept responsibility for the ultimate selection. Always
compare draft inducers for interchangeability prior to installing or recommending their use.
For a complete line of Fasco products, visit www.regalbeloit.com
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