Motoasis Upgrade Model 8814/8663/8673 Copper Motor — 9x9, 110 CFM, 3.5 Sones

Upgrade with confidence: Motoasis copper motor for 9x9 Nutone fans

The Motoasis Upgrade Kit centers on a robust copper motor designed to replace older aluminum-plated units in 9"x9" Nutone fans. With a tested 110 CFM airflow and 3.5 sones of quiet operation, this replacement aims to restore steady performance while keeping energy use sensible. The upgraded motor assembly is built to endure, offering a more consistent experience over time compared with traditional components.

Designed for compatibility, the kit fits a wide range of Nutone 9x9 models and related units (including 8814R, 8663RP B, 8664RP B, and others listed in the compatibility notes). If you’re maintaining a bathroom vent that’s seen better days, this upgrade presents a practical path to renewed airflow without the need for a full fan replacement.

Key benefits at a glance

• Durable copper motor: The upgraded design prioritizes stability and long-term performance, reducing the likelihood of early failures.
• Extended life and reliability: Built to endure typical bathroom humidity and use cycles, with attention to consistent operation.
• Cost-effective refresh: Replacing just the motor component can be cheaper than buying a brand-new fan unit.
• Fast, tool-free replacement: Installation steps are straightforward, often completed in around 10 minutes with common household tools.
• Clear compatibility: Works with multiple 9"x9" Nutone fans and compatible models, simplifying compatibility decisions.
• Quality assurance: Includes a 3-year manufacturer defect replacement service for peace of mind.

What’s inside and how it helps

• Upgrade kit includes a copper motor assembly tailored for 9x9 vent fans, plus simple installation guidance.
• Compatibility coverage spans Nutone models such as 8814R, 8663RP B, 6445 series, and related units, reducing the need to search for exact parts.
• Technical specs at a glance: 37W AC, 110 CFM, 3.5 sones, 60 Hz—parameters chosen to balance performance with efficiency.

Real-life use scenarios often involve restoring restored airflow in damp bathrooms, kitchens, or utility spaces where a dependable vent helps manage moisture and odors. The materials and design focus on steady operation rather than flashy specs, so you can approach the upgrade as a practical maintenance choice rather than a drastic overhaul.

Installation and aftercare

This replacement is designed for quick, user-friendly setup. The steps are described clearly in the included guidance, and most homeowners complete the swap without special tools. After installation, you may notice smoother airflow, more consistent venting, and reduced rattling or motor noise compared with older components.

To support ongoing performance, Motoasis offers a robust 3-year quality assurance period. If issues arise from non-human factors, the manufacturer provides repair or replacement options under the stated terms, helping you maintain your ventilation setup with confidence.