Broan-NuTone Through-the-Wall Ventilation Fan 200 CFM - Efficient

In this review of the Broan-NuTone through-the-wall ventilation fans, the bottom line is simple: these units are practical, no-fuss solutions for moving air out of garages, small workshops and utility rooms. The larger 200 CFM 509S model is best when you need strong, room-scale ventilation, while the 70 CFM 512M is built for targeted spot ventilation. The single biggest reason to buy either one is the combination of in-wall installation with a built-in exterior wall cap that eliminates ductwork and simplifies mounting, making them useful for retrofits where duct runs would be difficult.

Key Features

• Built-in exterior wall cap: Reduces install time and means no separate ducting is required for most installations.
• Twist-lock motor assembly: Provides a quick, serviceable motor mount that simplifies maintenance and replacement.
• Integrated switch (509S): The 509S cover includes an on/off switch so wiring to a wall switch is not necessary in many setups.
• Galvanized steel housing: Durable construction helps protect the fan from weather and wear when installed through an exterior wall.
• Capacity options: Choose 200 CFM for ventilating rooms up to about 195 sq. ft. or 70 CFM for spot ventilation up to roughly 65 sq. ft.

Who It's For

These fans suit homeowners and DIYers who need a compact, straightforward through-the-wall exhaust solution for a one car garage, laundry room, small workshop or bathroom where a dedicated duct run is impractical. The 509S is best when a higher airflow is required to clear heat and humidity from larger spaces.

They are less suitable for installations that require very quiet operation or where airflow must be routed through long ducts. If ultra-quiet operation or inline ducting performance is critical, a different inline or ceiling-mounted solution should be considered.

Pros & Cons

Pros

• Effective airflow for the intended room sizes, with the 509S moving 200 CFM and the 512M providing 70 CFM for spot use.
• Simplified installation with a built-in exterior vent cap and twist-lock motor assembly reduces labor and parts needed.
• Sturdy galvanized steel housing and a built-in bird screen increase longevity for exterior wall installations.

Cons

• Noise level is noticeable at higher CFM; some users report the fan is loud or powerful, so it may not be ideal in noise-sensitive locations.
• The 512M requires wiring to a switch, which can add a small amount of installation work compared with the 509S with integrated switch.

Specifications

Our Verdict

For homeowners needing reliable, direct-through-wall exhaust, these Broan-NuTone models offer clear value: they are uncomplicated to install, ruggedly built and effective at removing heat, humidity and odors. Choose the 509S when you need higher airflow for rooms up to about 195 sq. ft., or the 512M for spot ventilation near a work bench or equipment. They deliver solid performance for the price, but expect noticeable sound at full speed.

Frequently Asked Questions

Do these fans require ducting?
No, both models include a built-in exterior wall cap so separate duct runs are not typically required.

Which model is better for a one car garage?
The 509S at 200 CFM is better for ventilating a one car garage or rooms up to about 195 sq. ft.; the 512M is intended for smaller spot ventilation.

Is the 509S switch wired or on the cover?
The 509S has an integrated on/off switch on the cover, which can eliminate the need to wire a separate wall switch.