What HP motor do I need for my Lennox unit?

The correct replacement for Lennox model OEM Lennox Draft Inducer Blower Motor — 72W70 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 Draft Inducer Blower Motor — 72W70.

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 Draft Inducer Blower Motor — 72W70

Name: OEM Lennox Draft Inducer Blower Motor — 72W70
Brand: Lennox
SKU: LNX-72W70
Price: 159.95 USD
Availability: InStock

SKU: LNX-72W70 Brand: Lennox

$159.95 $219.95

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The genuine OEM Lennox 72W70 draft inducer blower motor drives the inducer assembly that pulls combustion products through the heat exchanger and discharges them out the vent. This established draft proves airflow to the pressure switch, which is a required safety step before your Lennox furnace will ignite. Built to Lennox OEM specifications, the 72W70 delivers the precise speed and torque needed for correct venting performance.

Common failure symptoms: A failing 72W70 commonly presents as a no-heat call, pressure-switch lockouts, loud vibration or squealing on startup, a slow or non-spinning inducer, or a furnace that never reaches ignition. Bearing wear, shaft seizure, and burned windings are the typical failure modes.

Why OEM matters: The safety and efficiency of your Lennox furnace hinge on an accurate inducer draft. A mismatched aftermarket motor can disrupt pressure-switch operation, cause short cycling, and jeopardize safe combustion. Installing the authentic Lennox 72W70 ensures factory-matched draft, an exact bolt-in fit, and dependable compatibility with your Lennox system.

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 Draft Inducer Blower ...

$159.95

Frequently Asked Questions

Does this Fan Motor fit my Lennox OEM Lennox Draft Inducer Blower Motor — 72W70?

Yes. This is the factory-specified OEM fan motor for the Lennox OEM Lennox Draft Inducer Blower Motor — 72W70. 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 Draft Inducer Blower Motor — 72W70?

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 Draft Inducer Blower Motor — 72W70

Shipping Information

Return Policy

Frequently Asked Questions