Broan-NuTone RE70BN 70 CFM Bath Fan Replacement Motor Kit - Easy DIY

Bottom line: Our review finds the Broan-NuTone RE70BN motor kit is a practical, no-frills solution for homeowners who need to restore ventilation without replacing the entire fan assembly. In this review the kit stands out for being a true direct replacement for many Broan-NuTone and NuTone housings and for allowing a fast DIY swap with no wiring or drywall work, so the biggest reason to buy is simple: quick restoration of bathroom airflow and humidity control with minimal tools and time.

Key Features

• Direct replacement compatibility: Fits a long list of Broan-NuTone, NuTone, Nautilus and Aira models so the motor will drop into many existing housings without modification.
• Improved airflow: Rated for 70 CFM and can deliver up to 40% more power when installed in select 50 CFM fans, which helps clear steam and odors faster.
• Quick DIY installation: Requires no wiring changes and avoids drywall cutting, making the swap doable in roughly 10 minutes for a competent homeowner.
• Complete replacement kit: Includes a genuine motor, blower wheel, two motor mounting plates and necessary hardware, so few additional parts are needed for the repair.
• Effective ventilation: Operates at 6.0 sones and provides consistent removal of moisture and odors to protect bathroom finishes and indoor air quality.

Who It's For

This kit is best for homeowners and DIYers who already own a compatible Broan-NuTone or related model and want a fast, cost-effective motor replacement without hiring an electrician or doing ceiling repairs. It suits anyone facing a dead or noisy fan motor and who values a tried replacement part from the original manufacturer.

It is less suitable for those who need a lower-sone, ultra-quiet upgrade, or for installations that use 8' x 8-1/4' housings, since the kit does not fit those sizes. Also, if you need a higher-capacity commercial fan or an integrated light/ventilator combo, look for a full fan replacement instead.

Pros & Cons

Pros

• Fast, no-wiring swap lets most users replace the motor in about 10 minutes.
• Genuine Broan-NuTone parts ensure proper fit and straightforward compatibility.
• Improves airflow for many 50 CFM units and restores ventilation performance for 70 CFM models.
• Complete kit includes motor, blower wheel, mounting plates and hardware so there are no missing pieces.

Cons

• Operates at about 6.0 sones, so it is not the quietest option available and noise reports are mixed.
• Does not fit 8' x 8-1/4' housings, limiting use on some older or nonstandard installations.

Specifications

Product type	Bathroom exhaust fan replacement motor kit
Rated airflow	70 CFM (compatible upgrade for select 50 CFM fans)
Noise level	6.0 sones
Includes	Motor, blower wheel, 2 motor mounting plates, hardware
Compatibility	Selected Broan-NuTone, NuTone, Nautilus and Aira models (not 8' x 8-1/4' housings)
Installation	No wiring or drywall cutting required

Our Verdict

The RE70BN motor kit is a solid value for homeowners who need to restore bathroom ventilation quickly and with original-equipment parts; it plugs into many existing housings, includes all necessary components and avoids messy ceiling work. Choose this kit for a fast DIY fix, but shop a quieter motor if sound level is your top priority.

Frequently Asked Questions

Will this kit fit my existing Broan or NuTone housing?
It fits many specific Broan-NuTone, NuTone, Nautilus and Aira models listed by the manufacturer, but it does not fit 8' x 8-1/4' housings, so verify your model before ordering.

Do I need an electrician to install it?
No; the kit is designed for quick DIY installation with no wiring changes or drywall cutting required for most compatible housings.

Is this motor quiet?
The motor runs at about 6.0 sones; users report mixed impressions on noise, so it restores ventilation but is not an ultra-quiet upgrade.