What HP motor do I need for my Lennox unit?

The correct replacement for Lennox model OEM Lennox X13 1 HP ECM Blower Motor — 81W38 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Lennox equipment which lists the model number OEM Lennox X13 1 HP ECM Blower Motor — 81W38.

My AC fan is not spinning. What part do I need?

A fan that does not spin, spins slowly, or makes grinding or squealing noises needs a new motor. Grinding means the bearings have failed. Squealing means the bearings are dry. No spin with a humming sound means the capacitor may be the issue. Check the motor capacitor before replacing the entire motor.

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Lennox

OEM Lennox X13 1 HP ECM Blower Motor — 81W38

Name: OEM Lennox X13 1 HP ECM Blower Motor — 81W38
Brand: Lennox
SKU: LNX-81W38
Price: 99.95 USD
Availability: InStock

SKU: LNX-81W38 Brand: Lennox

$99.95 $139.95

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The genuine OEM Lennox 81W38 (factory part 607421-07) is a 1 HP X13 constant-torque ECM blower motor, pre-programmed to Lennox specifications. This electronically commutated motor drives the indoor blower in your Lennox furnace or air handler, delivering consistent, energy-efficient airflow across a range of static pressures while running quieter and cooler than traditional PSC motors.

Signs that your X13 blower motor is failing include weak or inconsistent airflow, the blower not starting, unusual humming or grinding noises, overheating, or the motor cutting out during operation. Worn bearings, a failing module, or electrical faults are typical culprits.

OEM matters here: the 81W38 comes factory-programmed with the correct torque profile and mounting configuration for your Lennox equipment. A generic motor may bolt in but won't match the programmed airflow curves your system relies on, resulting in poor comfort, higher energy use, and potential strain on other components. Install this genuine Lennox replacement to restore rated efficiency and quiet, dependable performance.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Lennox X13 1 HP ECM Blower M...

$99.95

Frequently Asked Questions

Does this Fan Motor fit my Lennox OEM Lennox X13 1 HP ECM Blower Motor — 81W38?

Yes. This is the factory-specified OEM fan motor for the Lennox OEM Lennox X13 1 HP ECM Blower Motor — 81W38. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the fan motor on my Lennox OEM Lennox X13 1 HP ECM Blower Motor — 81W38?

Difficulty: Medium-Hard (1–2 hrs)
Step 1: Turn off breaker. Step 2: Note motor specs: HP, RPM, voltage, rotation direction. Step 3: Remove old motor from mounting. Step 4: Transfer fan blade to new motor. Step 5: Mount new motor, reconnect wiring. Step 6: Restore power, verify rotation direction.

My AC fan isn’t spinning. What part do I need?

Fan not spinning, spinning slowly, or making grinding/squealing noises = motor failure. Grinding = bearings failed. Squealing = bearings dry. No spin + hum = check the motor capacitor first before replacing the entire motor.

Is this fan motor compatible with Bryant or Payne too?

Many Lennox parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Lennox fan motor?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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OEM Lennox X13 1 HP ECM Blower Motor — 81W38

Shipping Information

Return Policy

Frequently Asked Questions