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10 Best 8 Inch Exhaust Fans 2025 in the United States

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Our Top Picks

#1

Winner

VIVOSUN Smart Air Filtration PRO G8 Kit 8", AeroZesh G8 Inline Duct Fan w/GrowHub E42A Temp. Humidity WiFi-Controller, Carbon Filter & Ducting, Cooling & Ventilation System for Grow Tent, Hydroponics

Rating
9.8
Chosen by1,456
Noise Level (Sones)
Installation Type
Durability and Build Quality

Most important from
417 reviews

Noise Level (Sones)
The kit's fan is super quiet, even at higher speeds, which is great for maintaining a peaceful indoor environment.
Installation Type
The package includes adequate tools and accessories, making installation straightforward.
Durability and Build Quality
Users appreciate the robust build quality and competitive pricing of the VIVOSUN products.

The VIVOSUN Smart Air Filtration PRO G8 Kit is a comprehensive package designed for efficient air circulation and ventilation in grow tents and hydroponic setups. Featuring the AeroZesh G8 Inline Duct Fan with a robust 725 CFM airflow capacity, it ensures effective ventilation while maintaining a low noise level of only 51 dB, making it a quiet option for indoor use.

Controlled by PWM technology, the fan is energy-efficient and offers fully adjustable speed settings through the GrowHub E42A controller, which also monitors temperature and humidity levels. The WiFi-enabled controller allows for remote management via an app, providing convenience and ease of use. The included carbon filter, made with high-quality Australian Virgin charcoal, excels at odor control by eliminating strong smells and chemicals.

The kit's ducting is made from durable aluminum, ensuring flexibility and strength, and comes with secure stainless clamps for easy installation. Although it is relatively bulky, weighing 30.6 pounds, which could make handling and setup a bit challenging, this kit is well-suited for those looking to create a stable and optimized growing environment in their hydroponic or grow tent systems. Its higher weight and specific usage might not be ideal for more casual or smaller-scale gardening projects.

Rating
9.8
Chosen by1,456
Noise Level (Sones)
Installation Type
Durability and Build Quality

Most important from
417 reviews

Noise Level (Sones)
The kit's fan is super quiet, even at higher speeds, which is great for maintaining a peaceful indoor environment.
Installation Type
The package includes adequate tools and accessories, making installation straightforward.
Durability and Build Quality
Users appreciate the robust build quality and competitive pricing of the VIVOSUN products.
#3

Broan-NuTone 509 Through-the-Wall Ventilation Fan White Cover, 200 CFM, 8.5 Sones, 8"

Rating
9.4
Airflow Capacity (CFM)
Noise Level (Sones)
Energy Efficiency

Most important from
1790 reviews

Airflow Capacity (CFM)
Delivers powerful airflow that effectively removes steam and odors, making bathrooms and kitchens noticeably fresher.
Noise Level (Sones)
Noise levels are noticeably high, making the fan’s operation audible but tolerable when weighed against its ventilation effectiveness.
Energy Efficiency
Energy consumption is moderate, balancing decent airflow with reasonable power use for small to medium rooms.
Installation Type
Installation is straightforward with thoughtful features like a built-in exterior wall cap and spring-loaded damper, simplifying setup even in older homes with thick walls.
Durability and Build Quality
The fan’s sturdy metal housing and quality construction promise long-term durability and reliable performance.
Additional Features
The exterior wall cap design includes a bird screen and damper, though minor cosmetic imperfections are visible upon close inspection.

The Broan-NuTone 509 is an 8-inch through-the-wall exhaust fan designed to help remove heat, humidity, and odors from spaces like garages, kitchens, or laundry rooms. It offers a decent airflow of about 180 to 200 CFM, which is suitable for ventilating rooms up to around 195 square feet, making it a good fit for small to medium-sized areas. One standout feature is the easy installation process: it includes a built-in exterior wall cap and bird screen, so you don’t need extra ductwork, and the motor assembly uses a twist-lock design to simplify setup.

The fan's galvanized steel housing adds durability and protection against weather elements, which is a plus for long-term reliability. On the downside, the noise level is on the higher side at 8.5 sones, so it might be noticeable in quieter environments. Energy use is moderate, running at about 25 watts, which is reasonable but not the most efficient option available. Also, installation requires cutting into a wall and wiring to a switch, which may need professional help if you’re not comfortable with such tasks.

This fan suits homeowners who need straightforward, effective ventilation for moderately sized spaces and appreciate durability and ease of installation. However, it may be too loud for those who prioritize very quiet operation.

Rating
9.4
Airflow Capacity (CFM)
Noise Level (Sones)
Energy Efficiency

Most important from
1790 reviews

Airflow Capacity (CFM)
Delivers powerful airflow that effectively removes steam and odors, making bathrooms and kitchens noticeably fresher.
Noise Level (Sones)
Noise levels are noticeably high, making the fan’s operation audible but tolerable when weighed against its ventilation effectiveness.
Energy Efficiency
Energy consumption is moderate, balancing decent airflow with reasonable power use for small to medium rooms.
Installation Type
Installation is straightforward with thoughtful features like a built-in exterior wall cap and spring-loaded damper, simplifying setup even in older homes with thick walls.
Durability and Build Quality
The fan’s sturdy metal housing and quality construction promise long-term durability and reliable performance.
Additional Features
The exterior wall cap design includes a bird screen and damper, though minor cosmetic imperfections are visible upon close inspection.

Buying Guide for the Best 8 Inch Exhaust Fans

Choosing the right 8-inch exhaust fan involves understanding your specific needs and the key specifications that will ensure the fan performs effectively in your space. Exhaust fans are essential for maintaining good air quality by removing stale air, odors, and excess moisture. Here are the key specifications to consider when selecting an 8-inch exhaust fan, along with explanations to help you make an informed decision.
Airflow Capacity (CFM)Airflow capacity, measured in cubic feet per minute (CFM), indicates how much air the fan can move. This is crucial because it determines the fan's effectiveness in ventilating a space. For small rooms or areas, a lower CFM (around 50-100) might be sufficient, while larger spaces or areas with higher moisture levels may require a higher CFM (100-200 or more). Consider the size of the room and the level of ventilation needed to choose the right CFM.
Noise Level (Sones)Noise level, measured in sones, indicates how loud the fan will be when operating. This is important for comfort, especially in areas like bathrooms or kitchens where you spend a lot of time. Fans with a noise level of 1-2 sones are very quiet, while those with 3-4 sones are moderately loud. If you prefer a quieter environment, opt for a fan with a lower sone rating.
Energy EfficiencyEnergy efficiency refers to how much power the fan uses to operate. This is important for reducing energy consumption and lowering utility bills. Look for fans with an Energy Star rating or those that specify low wattage usage. If you are environmentally conscious or want to save on energy costs, choose a fan that is designed to be energy efficient.
Installation TypeInstallation type refers to how the fan is mounted and installed. Common types include wall-mounted, ceiling-mounted, and window-mounted fans. The right type depends on where you need ventilation. For example, ceiling-mounted fans are ideal for bathrooms, while wall-mounted fans might be better for kitchens or garages. Consider the location and ease of installation when choosing the type.
Durability and Build QualityDurability and build quality refer to the materials and construction of the fan. This is important for ensuring the fan lasts long and withstands the conditions of the space. Fans made from high-quality materials like stainless steel or heavy-duty plastic are more durable. If the fan will be used in a high-moisture area, ensure it is rust-resistant and designed for such environments.
Additional FeaturesAdditional features can include things like built-in lights, humidity sensors, or timers. These features can enhance the functionality and convenience of the fan. For example, a humidity sensor can automatically turn the fan on when moisture levels are high, which is useful in bathrooms. Consider what extra features might be beneficial for your specific needs.

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