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Lennox | 85M50 | Direct Drive Blower Motor | 1/2 HP 115V 4-Speed

Lennox | 85M50 | Direct Drive Blower Motor | 1/2 HP 115V 4-Speed

Low stock: 1 left

Regular price $392.00 USD
Regular price Sale price $392.00 USD
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Maximize Airflow Performance and Furnace Blower Delivery Upgrades

  • Restores multi-speed indoor circulation profiles with a genuine factory-authorized PSC motor replacement

  • Troubleshoots dead system fan calls or persistent thermal overload trips in older multi-stage gas furnaces.

  • Fixes loud mechanical squealing, shaft binding, and high-vibration shaking inside the main blower cabinet deck

  • Drops seasonal operation noises by maintaining exact rotor balancing and precision factory internal shaft alignments.

  • Slides into existing multi-brand furnace frames with an industry-standard NEMA 48-frame motor shell layout.

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Specifications

Shop a new OEM Lennox 85M50 Blower Motor. 1/2 HP, 115V, 4-speed multi-tap design replaces noisy furnace fan motors in G40UH, G50UH models.

description

The Lennox 85M50 is a genuine factory-direct OEM residential direct-drive indoor blower fan motor. This standard PSC (Permanent Split Capacitor) motor serves as an authentic replacement solution inside premium Lennox, Armstrong, and Ducane forced-air furnaces, air handlers, and compact modular split systems. Operating at high-efficiency multi-speed tiers up to 1075 RPM, this open air-over assembly interfaces with the integrated control board to adjust structural airflow balancing across alternating seasonal heating and mechanical cooling modes.
Key Features
  • Genuine OEM Certified Match: Designed by Lennox International as a factory-direct indoor blower solution, ensuring correct belly-band mounting geometry and wheel alignment inside the blower deck.
  • Multi-Speed Versatility: Features 4 pre-tapped operational speed windings to tune exact system airflow requirements for multi-stage cooling or auxiliary backup heating.
  • Resolves Squealing and Failure: Formulated with an upgraded internal bearing system to fix high-pitched bearing squeals, electrical startup humming, and locked rotor conditions.
  • Standard Industrial Shaft: Standard 1/2-inch motor shaft dimensions permit seamless reuse of the original equipment blower wheel hub without modifications.
Product Details
  • Brand: Lennox / Armstrong Air / Ducane
  • Part Number: 85M50
  • Manufacturer Number: 85M5001
  • Component Type: Direct Drive PSC Blower Motor
  • Output Power / Rating: 1/2 HP (0.50 Horsepower)
  • Operating Voltage: 115 VAC Input / Single Phase (1PH)
  • Full Load Amperage (FLA): 7.10 Amps
  • Frequency / Speed: 60 Hz | 4-Speed Windings up to 1075 RPM
  • Frame Size: NEMA 48 Frame (5-5/8 Inch Body Diameter)
  • Enclosure / Profile: Open Air Over (OAO)
  • Rotation Direction: Reversible (CW/CCW) / Electrically Selectable Leads
  • Shaft Parameters: 1/2 Inch Diameter | Single Flat Surface
  • Capacitor Requirement: 10 MFD / 370 VAC (Sold Separately)
🛠️ HVAC Depot Pro Tip
Always Change the Capacitor! Whenever installing a brand new PSC motor like the 85M50, replace the run capacitor at the exact same time. Utilizing an old, weakened capacitor degrades performance and causes the internal motor windings to run hot, leading to premature thermal overload trips. Ensure you securely lock the blower housing assembly mounting bracket onto the motor belly band before reapplying line voltage to avoid internal wheel scraping.
Cross-Reference
  • Lennox Manufacturing Code: 100483-05
  • Genteq Factory Model Platform: 5CP39NGD544S
  • Alternative Engineering Code: 43702, M055WGL3121
  • Century / AO Smith Equivalent: DL1056
Model Compatibility
  • G40UH (Suffixes: G40UH-36B-070, G40UH-36B-090, G40UH-48C-090)
  • G50UH (Suffixes: G50UH-36B-070, G50UH-36B-090)
  • ML180UH (Suffixes: ML180UH070XE36B, ML180UH090XE36B)
  • 80MGF (Suffixes: 80MGF3-75A-1, 80MGF3-90A-1)

Specification

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Refund & Return Policy

Last Updated: June 2026

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Return Eligibility

We accept returns within 30 days of delivery.

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Approved returns may be subject to a 20% restocking fee.

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To request an exchange, contact us at:

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Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

  • Refunds will be issued to the original payment method.
  • Processing typically takes 7–14 business days after approval.
  • Your financial institution may require additional time before the refund appears in your account.

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Customers are responsible for return shipping costs unless the return is the result of:

  • Our shipping error,
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  • A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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We carry blower motors, fan motors, capacitors, control boards, contactors, thermostats, filters, copper lines, refrigerants, and more.

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