What HP motor do I need for my Lennox unit?

The correct replacement for Lennox model OEM Lennox Condenser Fan Motor — 78F92 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 Motor — 78F92.

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 Motor — 78F92

Name: OEM Lennox Condenser Fan Motor — 78F92
Brand: Lennox
SKU: LNX-78F92
Price: 99.95 USD
Availability: InStock

SKU: LNX-78F92 Brand: Lennox

$99.95 $139.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The genuine OEM Lennox 78F92 fan motor drives the fan in your outdoor condensing unit, moving air across the condenser coil to expel heat from the refrigerant loop. Built to Lennox factory specifications, it supplies the correct speed, torque, and electrical rating needed for efficient heat rejection and stable system pressures.

Common failure symptoms: A failing 78F92 may cause the outdoor fan to stop spinning, start slowly, or make loud humming, buzzing, or bearing noise. You might also see the compressor overheat and trip, warm air at the registers, higher energy bills, or repeated high-pressure lockouts as airflow drops.

Why OEM matters: Substitute motors often miss the exact horsepower, RPM, or rotation direction, which stresses the compressor and can shorten the life of your entire system. The Lennox 78F92 is an exact factory replacement that mounts without modification, protects your equipment warranty, and restores the airflow and efficiency your Lennox unit was engineered to provide.

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 Motor —...

$99.95

Frequently Asked Questions

Does this Fan Motor fit my Lennox OEM Lennox Condenser Fan Motor — 78F92?

Yes. This is the factory-specified OEM fan motor for the Lennox OEM Lennox Condenser Fan Motor — 78F92. 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 Condenser Fan Motor — 78F92?

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.

Menu

OEM Lennox Condenser Fan Motor — 78F92

Shipping Information

Return Policy

Frequently Asked Questions