What HP motor do I need for my Lennox unit?

The correct replacement for Lennox model OEM Lennox Fan Motor — 16F21 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 Fan Motor — 16F21.

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 Fan Motor — 16F21

Name: OEM Lennox Fan Motor — 16F21
Brand: Lennox
SKU: LNX-16F21
Price: 99.95 USD
Availability: InStock

SKU: LNX-16F21 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

Genuine OEM Lennox 16F21 fan motor. This motor drives the fan that moves air across your Lennox system's coil, maintaining the airflow required for proper heat transfer, temperature control, and rated system efficiency. A healthy fan motor is essential to keeping your Lennox equipment cooling or heating at its designed capacity.

Common failure symptoms: When the 16F21 begins to fail you may hear humming, grinding, or squealing from worn bearings, notice the fan running slowly or not starting at all, or find the motor overheating and tripping on thermal overload. Reduced airflow, warm supply air, high head pressure, and intermittent shutdowns are common signs of a weakening motor.

Why OEM matters: Lennox specifies motors by horsepower, RPM, rotation, voltage, and bearing type to match the blade and the unit's electrical characteristics. An aftermarket motor with the wrong speed or torque curve can move too little or too much air, overload the run capacitor, and shorten the life of surrounding components. The factory 16F21 guarantees a correct bolt-in fit and the exact performance your Lennox equipment was built around, restoring quiet, reliable airflow.

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 Fan Motor — 16F21

$99.95

Frequently Asked Questions

Does this Fan Motor fit my Lennox OEM Lennox Fan Motor — 16F21?

Yes. This is the factory-specified OEM fan motor for the Lennox OEM Lennox Fan Motor — 16F21. 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 Fan Motor — 16F21?

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 Fan Motor — 16F21

Shipping Information

Return Policy

Frequently Asked Questions