As an Amazon Associate I earn from qualifying purchases.Updated: March 27, 2026
The Motor is essential for powering the fan and circulating air in your Lennox S10XN-4 system. Over time, Motors can wear down due to constant use, leading to reduced airflow and efficiency. Delaying replacement can strain other components and eventually lead to complete system failure.
Function: The Motor powers the fan blades, circulating air throughout your space.
Signs it needs replacing: Unusual noises like grinding or humming, decreased airflow, overheating, or the fan not starting at all.
OEM vs aftermarket: OEM parts are made by Lennox and guarantee compatibility but often cost more. Aftermarket options can be cheaper but double-check reviews for fitment confirmation before purchasing.
Installation: Installing a Motor typically involves disconnecting power, removing the old Motor, connecting the new one, and testing its operation. Consult your owner's manual or seek professional help if needed.
Replacement schedule: Check your owner's manual for the recommended schedule. Replace sooner if you notice reduced performance.
Compatibility warning: always verify part number matches your exact model before ordering
Pros & Cons
Pros
✓ Restores device to original performance without buying a new unit
✓ Significantly cheaper than a full device replacement
✓ Multiple options available from OEM and aftermarket sellers
Cons
✗ OEM parts cost more than third-party alternatives
✗ Wrong part number will not fit — model verification is essential
Common Use Cases
Scheduled maintenance on the manufacturer-recommended replacement cycle
Performance restoration after noticing reduced output or efficiency
Preventive replacement before a worn part causes secondary damage
Who Should Buy This
This Motor replacement is for Lennox S10XN-4 owners experiencing reduced airflow, unusual noises from the unit, or other signs of a failing Motor. Replacing the Motor can extend the life of your existing system.
Not ideal for: If your Lennox S10XN-4 has extensive damage beyond the Motor or is very old, replacing the entire unit may be more cost-effective.
Good to Know Before Buying
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Always confirm your exact model number (S10XN-4) before ordering. Part numbers vary between model variants and production years. Check the label on your device or original documentation to be sure.
Frequently Asked Questions
What is the part number for the Lennox S10XN-4 Motor?
The part number is 73034. Always verify this matches your exact model (S10XN-4) before ordering, as similar models may use different parts.
How often should I replace the Motor on my Lennox S10XN-4?
Check your owner's manual for the recommended schedule. Replace sooner if you notice reduced performance.
Will aftermarket Motor replacements work in my Lennox S10XN-4?
Third-party parts are widely available and often cheaper than OEM. Look for listings that specifically mention compatibility with model S10XN-4 and check buyer reviews for fit confirmation before purchasing.
Prices change frequently. See the latest deal on Amazon.