What HP motor do I need for my Lennox unit?

The correct replacement for Lennox model OEM Lennox Condenser Fan Blade — 45C51 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 Condenser Fan Blade — 45C51.

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 Condenser Fan Blade — 45C51

Name: OEM Lennox Condenser Fan Blade — 45C51
Brand: Lennox
SKU: LNX-45C51
Price: 89.95 USD
Availability: InStock

SKU: LNX-45C51 Brand: Lennox

$89.95 $129.95

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The genuine OEM Lennox 45C51 fan blade is the propeller-style condenser fan that pulls air across the outdoor coil to release heat absorbed from your home. Factory-balanced with the correct pitch and diameter, it moves the precise volume of air your Lennox condenser needs to reject heat efficiently and keep the compressor operating within safe temperature limits.

A damaged or unbalanced fan blade is a common source of trouble. Look for symptoms such as loud rattling or vibration from the outdoor unit, reduced cooling capacity, the compressor overheating or tripping on high pressure, and visible cracks, bends, or missing sections on the blade. An out-of-balance blade also stresses the fan motor bearings and can lead to premature motor failure.

Choosing the OEM Lennox 45C51 ensures the exact blade pitch, diameter, bore, and rotation your unit was engineered for. Generic blades that don't match specification can reduce airflow, create noise, and overwork the motor and compressor. The factory part restores proper heat rejection, quiet operation, and rated efficiency for 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 Condenser Fan Blade —...

$89.95

Frequently Asked Questions

Does this Fan/Blower fit my Lennox OEM Lennox Condenser Fan Blade — 45C51?

Yes. This is the factory-specified OEM fan/blower for the Lennox OEM Lennox Condenser Fan Blade — 45C51. 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/blower on my Lennox OEM Lennox Condenser Fan Blade — 45C51?

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/blower 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/blower?

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 Condenser Fan Blade — 45C51

Shipping Information

Return Policy

Frequently Asked Questions