When you're searching for HVAC replacement parts motors and need a 1/3HP 4-speed blower motor, you'll likely land on the 903075. It's the common replacement cross-reference for Nordyne, Intertherm, and Miller furnaces, and these two options are worth comparing at the same listed price.
Quick Verdict
Both motors share the same core specifications. The key difference is in how compatibility is described. The AUTOBABA motor covers central furnace, electric furnace, air handler, HVAC system, and split system. The E Series motor names Nordyne, Intertherm, and Miller E Series electric furnaces and lists specific E2EB/E2EH models. Choose the first for broader equipment-category coverage, or the second when you want a direct E Series model match.
At a Glance
| Product | Listed Price | Specs | Compatibility |
|---|---|---|---|
| Blower Motor 1/3HP 903075 5KCP39EGT057AS For Nordyne Intertherm Miller 621675 | USD 95.99 | 1/3 HP, 960 RPM, 4-speed, 2.4A, 240V | Central furnace, electric furnace, air handler, HVAC system, split system |
| 903075 1/3HP Furnace Blower Motor For Nordyne Intertherm Miller E Series 4-Speed | USD 95.99 | 1/3 HP, 960 RPM, 4-speed, 2.4A, 240V | Nordyne, Intertherm, Miller E Series electric furnaces, including E2EB/E2EH models |
Where Each Wins
The AUTOBABA motor wins if you want a 903075 replacement described for multiple equipment types-central furnace, electric furnace, air handler, HVAC system, and split system-without being tied to a single furnace family.
The E Series motor wins if you want a motor that is specifically matched to Nordyne, Intertherm, and Miller E Series electric furnaces and includes named model examples like E2EB012HA and E2EH017HA.
Product Notes
Blower Motor 1/3HP 903075 5KCP39EGT057AS For Nordyne Intertherm Miller 621675

This motor covers the classic replacement cross-reference numbers 903075, 5KCP39EGT057AS, 622235, 621675, and 621932. The reason to pick it is the broad compatibility statement: it is described for use with central furnaces, electric furnaces, air handlers, HVAC systems, and split systems. That makes it a flexible candidate when your equipment is one of those types. The limitation is that the compatibility language is category-level rather than model-level, so there is no list of specific furnace models tied to this option. It carries the same 1/3 HP, 960 RPM, four-speed, 2.4A, and 240V specs as the other motor.
903075 1/3HP Furnace Blower Motor For Nordyne Intertherm Miller E Series 4-Speed

This motor is positioned specifically for Nordyne, Intertherm, and Miller E Series electric furnaces, and the description calls out models in the E2EB and E2EH families, including E2EB010HA, E2EB012HA, E2EB015HA, E2EB017HA, E2EB020HA, E2EB023HA, E2EH010HA, E2EH012HA, E2EH015HA, E2EH017HA, and E2EH020HA. If your furnace is one of those, this is a direct model-level match. The limitation is that its compatibility statement is focused on the E Series electric furnace family rather than the broader HVAC and split-system categories. The specs remain consistent with the 903075 profile: 1/3 HP, 960 RPM, four speeds, 2.4A, and 240V.
Final Choice by Use Case
If you need a 903075 replacement for a central furnace, electric furnace, air handler, HVAC system, or split system, the AUTOBABA motor gives you the widest compatibility wording. If your unit is a Nordyne, Intertherm, or Miller E Series electric furnace from the E2EB/E2EH families, the E Series motor is the more direct match. Both options list the same replacement cross-references, so the practical decision comes down to matching the compatibility description to your equipment.