What HP motor do I need for my Lennox unit?

The correct replacement for Lennox model OEM Lennox ECM Blower Motor Assembly — 70W46 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 ECM Blower Motor Assembly — 70W46.

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.

Lennox

OEM Lennox ECM Blower Motor Assembly — 70W46

Name: OEM Lennox ECM Blower Motor Assembly — 70W46
Brand: Lennox
SKU: LNX-70W46
Price: 159.95 USD
Availability: InStock

SKU: LNX-70W46 Brand: Lennox

$159.95 $219.95

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The genuine OEM Lennox 70W46 ECM blower motor assembly drives the circulation of conditioned air throughout your home. As an electronically commutated motor (ECM), it delivers variable-speed operation for improved comfort, quieter running, and significantly lower energy consumption than standard PSC motors. This assembly is engineered to the exact specifications required by compatible Lennox furnaces and air handlers.

When a blower motor begins to fail, you may notice weak or inconsistent airflow from your vents, unusual humming or grinding noises, the blower failing to start, or the furnace repeatedly tripping on high-limit shutdown due to poor air movement. A motor that runs hot or cycles erratically is often nearing the end of its service life.

Choosing the OEM Lennox 70W46 ensures the motor's torque curve, module programming, and mounting dimensions match your equipment precisely — something aftermarket substitutes frequently get wrong. Proper compatibility protects your furnace's control board, preserves rated efficiency, and keeps your factory warranty intact for long-term reliable 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 ECM Blower Motor Asse...

$159.95

Frequently Asked Questions

Does this Fan Motor fit my Lennox OEM Lennox ECM Blower Motor Assembly — 70W46?

Yes. This is the factory-specified OEM fan motor for the Lennox OEM Lennox ECM Blower Motor Assembly — 70W46. 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 ECM Blower Motor Assembly — 70W46?

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 ECM Blower Motor Assembly — 70W46

Shipping Information

Return Policy

Frequently Asked Questions