Cylrod 8664RP/8663RP Upgrade Motor for Nutone & Broan Fans – 100 CFM, 3.5 Sones

Overview

The Cylrod 8664RP/8663RP upgrade motor is designed to replace Nutone 8664RP and 8663RP B Unit fans, delivering a dependable airflow solution for a range of Nutone and Broan exhaust fans. With a rated 100 CFM capacity and a quiet 3.5 sones sound level, this motor emphasizes a balance of effective ventilation and unobtrusive operation. Built with copper winding characteristics and a robust build, it aims to offer solid electrical performance and durable heat management. The kit is engineered for a straightforward replacement, pairing performance with practical, real‑world usability for busy bathrooms.

Compatibility at a glance

• Replaces Nutone 8664RP B Unit and works with a broad set of Nutone models (including 8663RP and related variants).
• Compatible with common Broan exhaust configurations frequently found in residential baths.
• Designed to align with related parts in the 6445RP, 671R, 672R, 8673RP, 763RL, 769RL, 750 family of units.

What’s included

• Replacement motor (8664RP/8663RP)
• Grounding clip
• Fan wheel
• Motor isolation block

Performance and design highlights

• 1460 RPM baseline for steady air movement
• 120 V operation for standard household circuits
• 100 CFM capacity to move air efficiently in typical bathrooms
• 3.5 Sones for relatively quiet operation during most use scenarios
• Copper construction offers good electrical conductivity and improved heat dissipation
• Lightweight, compact form intended for an easier installation process

Quality, installation, and support

Rigorous factory testing helps ensure reliability, and you can expect a smooth replacement process—often around 10 minutes with basic hand tools. Cylrod backs the product with a 3‑year service window; if any quality concerns arise, reach out for assistance with repair or replacement options.