Ensure the replacement matches:
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Mounting type (bolt pattern and orientation)
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Shaft size and position
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Electrical specs (115V, 60Hz, 0.95A, 3000 RPM)
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Motor frame type and dimensions
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Rotation direction (CW/CCW if specified)
Here are your best direct, drop-in replacements for the Fasco U21B motor (model 7021?10548, 115?V, .95?A, 3000?RPM, CW, type U21B):
OEM Direct Replacement
Fasco?W9 Draft Inducer Blower Assembly
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3.3″ shaded?pole motor, sleeve bearing, temper protected, 115?V, 0.95?A, 3000?RPM
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Cross-referenced to Fasco?7021?10548 and State?0012400500 jameselectric.ca+15packardonline.com+15cshincorporated.com+15amazon.com
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Sold by Johnstone Supply and other HVAC wholesalers johnstonesupply.com+1allaroundindustrysupply.com+1
This is the safest and most reliable OEM-style replacement option.
Changing whole thing (vented water heater) is not a bad idea.
