Top 5 Best Roof Mounted Attic Fans (2020 Review)

Is it time to regulate your property’s temperature?

Want a simple solution to automate this process and make sure the results are consistent?

To help optimize your setup at home, we have put together a comprehensive guide on roof mounted attic fans.

In this review, you will learn about…

  • How a roof mounted attic fan works
  • The benefits of using a roof mounted attic fan
  • Things to consider before purchasing a brand-new roof mounted attic fan
  • Our top-rated pick for the best roof mounted attic fan
best roof mounted attic fans

My Overall #1 Rated Pick

broan roof mounted attic fan
  • 1600-cfm fan speed
  • 14-inch balanced steel blade
  • Thermally protected motor
  • Permanently lubricated
  • Brown finish

My overall top pick for the best roof mounted attic fan goes to the Broan 356BR1600. This brown finished attic ventilator will be installed on your roof. It includes a 14" steel blade and a permanently lubricated motor. You can install this roof mounted attic fan and keep your attic cool, dry, and to prevent mold.

Broan 356BR1600
  • 1600-cfm
  • 14" Steel Blade
  • Permanently Lubed
  • 1600-cfm
  • 14" Steel Blade
  • Permanently Lubed
View on Amazon
Broan 358
  • 1400-cfm
  • 23-Gauge Flashing
  • Permanently Lubed
  • 1400-cfm
  • 23-Gauge Flashing
  • Permanently Lubed
View on Amazon
Air Vent
  • 1170-cfm
  • 60-120 Thermostat
  • 6-Blade Fan
  • 1170-cfm
  • 60-120 Thermostat
  • 6-Blade Fan
View on Amazon
Cool Attic
  • Thermal Protection
  • Precision Balanced
  • Quiet
  • Thermal Protection
  • Precision Balanced
  • Quiet
View on Amazon
Broan 355BK
  • 1400-cfm
  • 23-Gauge Steel
  • Thermal Protection
  • 1400-cfm
  • 23-Gauge Steel
  • Thermal Protection
View on Amazon

The Top 5 Best Rated Roof Mounted Attic Fans in 2020

Here is my list of the best roof mounted attic fans. These fans are installed on the roof to automatically remove moisture and heat. If you want to read my full reviews, keep scrolling.

  1. Broan Roof Mounted Attic Fan (My #1 Top Pick)
  2. Broan 358 Roof Mounted Attic Fan Ventilator (A Close Second)
  3. Air Vent Roof Mounted Attic Vent Fan
  4. Cool Attic Galvanized Steel Roof Mounted Attic Fan (Best Budget)
  5. Broan 355BK Attic Fan Roof Mounted Attic Fan 

What are Roof Mounted Attic Fans?

A roof mounted attic fan rests on top of the roof and helps regulate a property’s temperature by removing hot air. In general, this type of attic fan is accompanied by a sturdy base, which is made of sheet metal or plastic. The attic fan sits on top of this base and works similar to a traditional mounting plate.

The fan has to be installed effectively to ensure it can access the attic and remove hot air. 

A roof mounted attic fan is often seen as a cost-effective alternative to the installation of the ridge & soffit passive vents. Since, the attic is generally a separate part of the house, it tends to heat up faster as the air moves upwards. As a result, a roof mounted attic fan helps keep the temperature down.

Read Also: What Are The Pros And Cons of Attic Fans?

For the fan to work properly, it is equipped with a thermostat to automate when the fan turns on/off. When the fan is on, it will continue to eliminate hot air from the attic. 

It’s important to note the fan works in unison with passive vents because that’s where it pulls in outside air. When the fan is doing its job, the hot air will be replaced with cooler air to regulate the house’s temperature. For the cool air to enter, there must be enough passive venting for the attic fan to work properly. The attic fan spins to help remove hot air, while the cool air comes through the vents. This can be advantageous when it comes to keeping the attic moisture-free and comfortable.

What are the Benefits of Roof Mounted Attic Fans?

Roof mounted attic fans offer a number of advantages and can be a real difference maker for homeowners.

It’s important to sit down and understand these benefits and why investing in a good attic fan is essential.

The benefits include:

  • Regulates Property’s Temperature
  • Helps Protect the Roofing Material(s)
  • Reduces Utility Bills
  • Consistent Results

Read Also: What Are The Best Gable Mounted Attic Fans?

A roof mounted attic fan can be a game-changer for the house and its temperature. If hot air continues to spread throughout the attic, it leads to an increase in energy bills and makes it progressively uncomfortable indoors.

By understanding the pros and cons of attic fans, you can make an educated decision and buy a top-rated roof mounted attic fan. Spending money on a component such as this is critical over the long-term and will improve living conditions considerably.

How to Install a Roof Mounted Attic Fan

Installing a roof mounted attic fan requires attention to detail and the ability to find a good spot to set everything up.

Before beginning, it’s highly recommended to understand the attic’s layout, where the fan will be mounted, and how it’s going to be mounted. This information is essential in ensuring the process is smooth, safe, and in line with what the house requires.

Read Also: What Are The Best Natural Light Solar Attic Fans?

Once the roof has been inspected, it’s time to work on creating a measured vent hole near the top of the roof. A vent hole is necessary because this is where the fan is going to be mounted using a plastic or metal base.

After the fan has been mounted, customized sheets of shingle can be placed near the base flashing. This secures everything into place and ensures the fan lasts for a long time.

It’s important to patiently work through the various attic fan installation steps and make sure everything works as intended. This includes testing whether or not the attic fan is functioning after it’s been installed.

enough passive venting for attic fan

How to Pick the Best Roof Mounted Attic Fan?

  1. Wiring

The wiring is the foundation of a strong, efficient attic fan.

If the wiring isn’t correctly set up, this can take away from the fan’s performance and can hinder how long it lasts too. As a result, it’s important to analyze how the attic fan is designed and what the wiring is going to look like once the attic fan installation is complete.

In some cases, the fan is hard-wired directly into the main electrical supply. However, other options offer a straightforward socket-based solution if there’s one located in the attic. Of course, solar attic fans are a great option for those seeking an eco-friendly fan. Solar powered attic fans run continuously when the sun is out so the only cost is the initial purchase.

Read Also: How Does An Attic Fan Work?

Remember, when buying a new attic fan, it’s best to consider the measurements and how the wiring will fit. Any issues in this regard can lead to electrical-based issues over the long run.

  1. Adjustable 

Does it have an adjustable attic fan thermostat for regulating temperature? A high-quality fan is going to include user-friendly settings to ensure the temperature is properly regulated.

These adjustments should take no more than a few seconds to implement. Once everything is ready to go, the right attic fan handles the temperature on its own. Whenever you want to make adjustments, you can play around with the settings and customize the fan’s performance.

When the weather begins to change, you want to have this option in hand. An attic fan thermostat is essential in most places.

Read Also: What Are The Best Master Flow Attic Fans?

The average roof mounted attic fan comes with an on/off switch and can easily be controlled by the homeowner. If necessary, the fan should also offer an automated solution to kick in whenever the temperature hits a specific number. For most homeowners, it’s easier to go with the automated attic fan, as it’s simple, efficient, and safe at the same time.

  1. Output 

Before doing anything else, you should take the time to measure your attic and see where the roof mounted fan is going to be installed. Measurements are essential because it allows you to know whether or not the fan can keep up with your property’s needs.

Certain attic fans don’t cover enough space to be worthwhile. This means some of the air gets removed while the rest remains inside the attic. This is a significant issue because it ruins the house’s temperature and leads to awful results.

To know the fan’s output, look at what the product description says. What is its coverage area? Does it go up to 2,000 square feet? Is this enough for your house?

Ask these questions before spending hard-earned money on a new roof mounted attic fan.

To measure correctly, take the length and multiply it by the width.

Read Also: How To Install An Attic Fan On The Roof?

  1. Durability

When a fan isn’t durable, you’re not going to enjoy its presence for too long.

In general, the best roof mounted attic fans are made of aluminum and/or steel. These materials are dependable, efficient, and work well in all weather conditions. This makes it easier to rely on them when it comes to your property’s setup.

Other materials are riskier and may end up making too much noise.

Along with having a steel and/or aluminum-based build, the fan should also include a comprehensive finish. This means it shouldn’t have hanging parts, loose components, or anything that’s out of place. When a fan isn’t built properly, it can start to breakdown and age quickly.

  1. Setup 

How long does it take to set up the new attic fan?

There is nothing worse than buying a new attic fan, taking it out of the box, and realizing you have to buy separate parts to make it work. This is annoying, unnecessary, and doesn’t happen with the best brands.

Read Also: What Are The Best Solar Attic Fans With Warranties?

Look for the market leaders, so you don’t have to struggle with the installation process. A high-quality roof mounted attic vent fan is going to come with the necessary components and will be a breeze to set up.

Take a look at what’s required and how the fan is going to be mounted. Having this information can make all the difference when it’s time to compare models and make a decision.

How Do You Inspect Attic Fans?

#1. Will It Turn On?

Locate the thermostat (small metal box) usually mounted on a rafter or truss next to the fan in the attic. Turn the temperature knob so it is below the current attic temperature. You can also use a heat gun, hair dryer, or lamp to heat up the thermostat if the attic is cold.

#2. Turn The Blades

If the attic fan doesn't turn on, try turning the fan blades. If the blades won't turn, you may have a seized motor.

#3. Operation Quality

If the the attic fan turns on, are their any weird noises? Does it run smoothly? Can you feel air flow or is it very weak? The fan screen or louvers should not be blocked with debris impeding air flow.

#4. Water Stains

A common problem with attic fans are leaks. Are there any signs of water leaks around the fan on the roof sheathing?

home inspector secrets logo (1)

How Are Roof Mounted Attic Exhaust Fans Different From Other Fans?

Ventilating the attic is all about finding the right fan, installing it correctly, and making sure the settings are customized for your property.

While most people lean towards roof mounted attic fans, this isn’t the only option available to you. A gable-mounted attic exhaust fan is also a potential option for those wanting to steer clear of a roof-mounted alternative.

Here’s a detailed comparison of both options and how they work.

  • Design

While both types of attic fans do the same job, they are completely different in how they’re set up. A roof-mounted version is set up near a vent hole and is close to the top of the roof. However, a gable-mounted version is installed inside the attic.

Remember, “gable” is the triangular part of the wall. 

This means the design is reliant on setting up in that portion of the attic.

These subtle differences in design can play a role in a homeowner’s decision. Some want the fan inside, while others don’t mind it close to the top of the roof. This is going to vary from person to person.

  • Cooling Capacity

With cooling capacity, the attention goes to how well it “cools” the attic on a per-minute basis. The measurement is called cubic feet per minute and is important in understanding how both types work.

A gable fan is often used for larger properties due to its size, while a roof-mounted version does well in compact spaces. This isn’t a steadfast rule but it’s a general idea to keep in mind.

Read Also: Can Attic Fans Protect Your Roof?

  • Eco-Friendly

Roof mounted attic fans are equipped with solar panels and other similar components. This makes it easier to personalize the source of power for your attic fan.

On the other hand, gable fans rarely come equipped with such options. This has to do with where they are installed, as most of them aren’t exposed to the sun.

  • Maintenance

A gable attic fan installation is time-consuming. The average property doesn’t come equipped with a separate gable vent, which means that’s an additional step you have to complete.

Since most property owners don’t want to struggle with the installation process, they prefer to go with a high-quality roof mounted attic fan. It’s easier to set up, doesn’t have too many components, and delivers consistent results throughout the year.

From a maintenance perspective, both fans can be challenging depending on which one you buy. A well-reviewed attic vent fan can last for a decade as long as it’s properly maintained.

Read Also: Venting Attic Without Soffits? (Is It Possible?)

Where to Buy the Best Roof Mounted Attic Fans?

The average roof mounted attic exhaust fan can save up a tremendous amount on energy bills according to modern research. However, what about the initial cost and making sure you find a good deal?

This is where Amazon comes into action as a wonderful online retailer.

Feel free to go through the various roof mounted attic vent fans on Amazon, read the reviews, and see which one works best for you.

Amazon is a top-quality online retailer and is the best place to buy a new roof mounted attic fan.

My #1 top pick is the Broan Attic Fan is an all-inclusive solution for keeping the attic dry and cool. Offering a spectacular 1600 CFM and covering up to 2285 square feet, this roof mounted attic fan is a power-packed option.

It comes with a brown PVC plastic dome, a 14” steel blade design, and 22-gauge metal flashing for maximum results. Using its adjustable thermostat and lubricated attic fan motor, this fan gets the job done.

  • 1600-cfm
  • 14" Steel Blade
  • Permanently Lubricated
  • Noisy Operation
  • Average Manual

This Broan Attic Fan is unique with its aluminum-based design.

It offers a comprehensive 1,000 CFM and can offer coverage up to 1,400 square feet without breaking a sweat. 

This roof mounted attic vent fan includes a 14” steel blade fan and is accompanied by a 23-gauge metal flashing for complete results.

  • 1400-cfm
  • 23-gauge Metal Flashing
  • Permanently Lubricated
  • Noisy Operation
  • Average User Manual

The Air Vent Attic Fan is a powerful solution with its brown-colored design, 1,170 CFM attic fan motor, and 25” diameter metal dome.

It can easily offer coverage for up to 1,650 square feet and comes equipped with an adjustable thermostat. 

Through its 2.8 amp motor, the attic fan can easily manage hot air. It also includes a special warranty (5-year parts, 2-year labor).

  • 1170-cfm
  • 60 to 120 Thermostat
  • 6-Blade Fan
  • Noisy Operation
  • No Humidistat

The Cool Attic fan is a sleek, efficient roof mounted solution with a dome-based design. It is made of galvanized steel and has accompanying mesh grills for complete protection against pests. With its precision-balanced fan blades, high wind resistance, and 1080 CFM attic fan motor, the fan can easily cover a 1600 square foot attic.

  • Thermal Protected
  • Quiet
  • Precision Balanced
  • Average Coverage
  • Vibrates Too Much

This Broan Attic Exhaust Fan is a fascinating option in the company’s line up and offers a 1,000 CFM attic fan motor and coverage up to 1,400 square feet. It also includes a 14” steel blade fan and is ideal for managing a property’s airflow. The attic fan is made of galvanized steel for extended durability.

  • Quiet Attic Fan Operation
  • Easy to Use
  • Consistent Temperature Regulation
  • Takes Time to Install
  • Average Manual

My #1 Top Pick: Broan Roof Mount Powered Attic Fan

My top pick goes to this Broan roof mounted attic fan. Here's why...

  1. Built to Last

well-designed roof mounted attic fan should be made of galvanized steel and/or aluminum for sustained results. This can help when equipped with a PVC plastic dome for superior protection.

The Broan Attic fan includes a separate PVC plastic dome, which keeps it protected from UV rays and damaging inclement weather.

  1. Comprehensive Ventilation

Coming with a powerful 1,600 CFM motor, this exceptional roof mounted attic fan can cover up to 2,285 square feet. It offers a stable, consistent solution for regulating temperature in the house and works well in most situations.

  1. Easy to Operate

With an efficient built-in thermostat, the Broan Attic Fan is ideal for customized temperature control and operates automatically once it’s installed. This simplifies how the temperature is regulated throughout the year.

  1. Excellent Automation

Automation is essential and this wonderful roof-mounted attic fan delivers a world-class solution for managing hot air in the attic. Once it’s turned on, the fan can automatically manage the task and will ensure the temperature doesn’t waver.

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Arie Van Tuijl

Arie Van Tuijl

Arie is the founder of Home Inspector Secrets, an online resource dedicated to helping people understand how homes work. He is a licensed home inspector in two U.S states and owns a residential and commercial inspection company (read his full bio on the About page). To ask Arie a question, please use the comment box at the bottom of the relevant article.

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About Home Inspector Secrets

Home Inspector Secrets is an online resource for owners, buyers, and sellers to understand all aspects of home maintenance. We have detailed home guides, product reviews, inspection advice, and much more.