Best 8 Inch Exhaust Fan Motor Replacements for Quiet, Efficient Ventilation
The right 8 inch exhaust fan motor can restore airflow, reduce moisture, and quietly keep bathrooms and utility spaces fresh. This guide examines five compatible replacement motors and offers practical purchase considerations to help you pick a model that fits your housing, noise preferences, and installation needs. Read on for concise product highlights, setup tips, and a buying guide that covers compatibility, installation, and performance.
| Product | Brand | CFM / Power | Approx. Notes |
|---|---|---|---|
| BOJACK YJF6178 | BOJACK | 70 CFM | Direct replacement for common NuTone/Broan fans |
| Siasky Universal Motor Kit | Siasky | 50 CFM | Balanced coil pack, quiet operation |
| Broan-NuTone RE70BN | Broan-NuTone | 70 CFM | Easy DIY replacement for 70 CFM fans |
| yrjns S97015162 | yrjns | 80 CFM | Wide compatibility with many NuTone/Broan models |
| Endurance Pro 3.3″ | Endurance Pro | 70 CFM | 3.3″ diameter replacement motor |
| RLOZUI 8″ Exhaust Fan | RLOZUI | 110–80 W (no CFM listed) | High-quality, durable exhaust option |
BOJACK YJF6178 Bathroom Vent Motor
The BOJACK YJF6178 is a 120V, 60Hz replacement motor designed for 70 CFM bathroom fans. It operates at 1.1 amps and features a 3400±100 RPM rating, with a longer wire lead for easier hookups in tight ceilings. The motor aligns with model families including N678, N671, N679, and other common 8″ housings. It is a straightforward drop-in option for compatible NuTone/Broan units, emphasizing reliability and consistent airflow without excessive noise.
Key details
Electrical: 120V, 60 Hz, 1.1A. Speed around 3400 RPM. Wire length about 8.66″ with a 2-prong plug ensures flexible installation in ceiling cavities. The unit is designed for durability and long life in humid bathroom environments.
Siasky Universal Motor Kit
The Siasky kit is aimed at 120V fans with approximately 50 CFM output. It features a balanced 5/8 coil pack and aerodynamic blades to keep noise under 1.5 sones, delivering quiet operation. With a 6″ wire length and two plugs, the kit supports several Nu-tone and Broan models, including some Up-pco and Sears variants. It’s designed for compatibility flexibility and keeps installation straightforward for DIYers replacing motor-only assemblies rather than entire housings.
Key details
Specifications indicate 120V operation, 50 CFM, 0.6A current draw, 3000 RPM, and 60 Hz. The mounting stud is centered at 1 7/8″ with a 3/16″ shaft and 4 5/8″ blade width. Quiet performance is emphasized through precision balance and smooth blades.
Broan-NuTone RE70BN Motor Kit
The Broan-NuTone RE70BN kit targets 70 CFM bathroom fans, offering a direct replacement path for compatible models. It promises up to about 40% more power for select 50 CFM units, improving air exchange and odor/moisture removal. Quick DIY installation is a highlight, with no wiring or drywall cutting required in many cases, letting you complete the motor swap in roughly 10 minutes or less. The kit is especially suitable for homeowners seeking a simple, fast upgrade to maintain bathroom air quality.
Key details
Performance focuses on enhancing ventilation efficiency in 70 CFM systems, with practical benefits for odor and moisture control. The quick-install approach minimizes downtime and keeps renovation projects straightforward for non-professionals.
yrjns S97015162 Upgrade Motor Assembly
The yrjns S97015162 is a robust upgrade motor compatible with a broad range of 8″ NuTone/Broan housing models. It provides up to 80 CFM, which helps rapidly clear humidity and remove odors in larger bathrooms. This model emphasizes improved airflow and quieter operation at around 2.5 sones. Installation is designed to be straightforward—usually a few screws and plug-in wiring. The assembly is built for durability, offering steady performance over time and better suction compared to older stock motors.
Key details
Compatibility covers multiple 8″×8-1/4″ housings like 678-G, 683-C, 676-D, and 684-D series, among others. The motor’s dimensions, airflow capacity, and mounting alignment are tuned for easy swap with existing mounting patterns and housings.
Endurance Pro 3.3″ Replacement Motor
The Endurance Pro motor is a direct fit for Nutone/Broan units with a 3.3″ diameter housing. It features a 120V, 60 Hz supply and a 1.2A draw, delivering 1550 RPM. A 2-prong plug and a compact shaft length support easy installation, even in tight ceiling spaces. This model emphasizes reliable mechanical performance with a focus on longevity in bathroom environments that promote corrosion resistance and steady airflow across frequent on/off cycles.
Key details
Compatibility notes identify settings for Nutone 86933 and related variants. The motor’s shaft dimensions and bearing type contribute to a balance of ease of installation and dependable operation in standard 8″ housings.
BOJACK YJF6178 White Replacement
This BOJACK motor serves as a replacement for multiple models including N678, N671, and 679-series baths, rated at 1.1A, 3400±100 RPM, 120V, 60 Hz, and 70 CFM. The longer wire harness supports flexible routing in ceiling cavities, and the 2-prong plug simplifies the swap process. The unit is suited for a range of 8″ NuTone/Broan fan applications where a robust motor can restore airflow and efficiency after wear or failure.
Key details
Wheel-speed and current draw are set to balance airflow with noise control. Compatible model references help confirm whether the motor will integrate with an existing housing without needing extensive modifications.
RLOZUI 8 Inch Exhaust Fan
The RLOZUI unit is positioned as a complete 8-inch exhaust solution, featuring a sturdy metal build and a brushless, dual-ball-bearing inner motor designed to deliver durable performance and reduced friction. The fan is described as suitable for bathrooms, kitchens, basements, and other spaces requiring regular ventilation. While the listing emphasizes a high-quality motor and long service life, it also notes durable construction and anti-corrosion properties to withstand humid environments over time.
Key details
The model targets broad ventilation needs with a focus on longevity and reliability. It is suitable for wall or ceiling mounting in various spaces where consistent airflow is desired.
Buying Guide: How To Choose The Right 8 Inch Exhaust Fan Motor
When selecting an 8 inch exhaust fan motor, consider compatibility with your current housing, desired airflow, noise level, and installation simplicity. Start by confirming the housing model and dimensions—most replacements list precise diameter, mounting patterns, and shaft sizes. For bathrooms, aim for sufficient CFM to match bathroom size and moisture removal goals; larger rooms benefit from higher CFM. Noise is often measured in sones or decibels, so look for frequency-balanced blade geometry and precision-balanced coils to minimize hum. Electrical compatibility (voltage, amperage, and plug type) matters for a straightforward swap with minimal wiring work. Installation time can vary from a quick 10-minute swap to a more involved process if wiring or ducting must be rerouted. Finally, durability features such as corrosion-resistant housings and high-quality bearings extend service life in humid environments. Compare kits that include mounting hardware or provide compatible coil packs to save time and avoid mismatches. Consider customer-fit notes from the product pages to ensure the motor supports your specific NuTone, Broan, or related brand models.
Performance perspectives vary by household: a high-CFM option improves air exchange in larger bathrooms but may generate more noise unless designed for quiet operation. A mid-range motor emphasizes balance between airflow and noise, suitable for standard residential baths. For DIY enthusiasts, kits that advertise easy, tool-free installation and direct replacements reduce installation risk. Durability considerations include bearing type and motor construction that resist moisture, heat, and humidity over long use cycles. By weighing compatibility, performance, and ease-of-installation benefits, you can choose an 8 inch exhaust motor that keeps bathrooms comfortable and moisture-free year after year.