The 10 Best Attic Fans

Updated May 04, 2018 by Brett Dvoretz

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We spent 40 hours on research, videography, and editing, to review the top choices for this wiki. In the summer months, the temperature in your attic can exceed 120 degrees Fahrenheit. But don't lose your cool. Our selection of fans will help regulate the temperature in your whole house by blowing hot air out of the roof vents, thus minimizing humidity levels and the risk of mold, while also helping you save on air-conditioning costs. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best attic fan on Amazon.

10. Air Vent Inc. 53315

The Air Vent Inc. 53315 sits close to the ceiling, so you won't risk hitting your head or hands on the blades when they're moving. It includes an adjustable thermostat to help you control temperatures without having to manually turn the unit on and off.
  • makes minimal noise
  • doesn't cause any vibrations
  • suitable only for smaller houses
Brand Air Vent
Model 53315
Weight 8.7 pounds
Rating 4.5 / 5.0

9. Broan 35316

The Broan 35316 features an extra-strong ribbed casing, and is designed to move a lot of thick air. You can conveniently remove the thermostat with a screwdriver and place it a few feet away, for more accurate temperature readings.
  • cools large spaces effectively
  • motor never needs lubrication
  • very noisy outside the house
Brand Broan
Model 35316
Weight 13.2 pounds
Rating 3.5 / 5.0

8. Cool Attic CX30BD2SPD

The Cool Attic CX30BD2SPD is perfect for larger spaces that need cooling. It includes a wall switch with high, low, and off options, making it simple to control as needed. Plus, it is powered by a PSC motor that is easy to maintain, compact, and highly efficient.
  • powder-coated shutter
  • prevents in-out airflow when closed
  • self-aligning blades
Brand Cool Attic
Model CX30BD2SPD
Weight 71 pounds
Rating 4.1 / 5.0

7. Natural Light Gable Mounted

The Natural Light Gable Mounted is built with high-quality materials that ensure it will last for years to come. The company is so sure of that, they even back it up with a 25-year warranty that covers the fan, the housing, and the included solar panel.
  • most can install it in under 2 hours
  • comes with all hardware
  • keeps cooling even during blackouts
Brand Natural Light
Model SAFG24
Weight 30 pounds
Rating 4.1 / 5.0

6. Eco-Worthy SV25

The Eco-Worthy SV25 is powered by two solar panels attached to each other by a hinge. This allows you to position them in a way that catches sunlight from nearly any angle, morning or afternoon. It comes with 16 feet of cable for placement versatility.
  • works even on cloudy days
  • sturdy aluminum frame
  • cannot attach it to a thermostat
Model L07FM30-SV25-1
Weight 14.3 pounds
Rating 4.2 / 5.0

5. Air Vent Inc. 54301

The Air Vent Inc. 54301 is a great whole house option with a direct drive motor that runs efficiently. It is so effective that it can thoroughly cool down homes that do not have an open floor plan, even in hot climates where others struggle.
  • can be mounted in any orientation
  • 2-speed pull chain
  • includes an installation template
Brand Air Vent
Model 54301
Weight 36 pounds
Rating 4.7 / 5.0

4. HQST Roof Mount

The HQST Roof Mount is a standalone model that comes with its own 30-watt solar panel as a power supply, so it won't run up your electricity bills. And, since you don't have to run any mains cables, installation is rather simple, too.
  • creates a good amount of airflow
  • solar panel can be mounted remotely
  • corrosion-resistant housing
Brand HQST
Model pending
Weight 36.7 pounds
Rating 4.1 / 5.0

3. QuietCool AFG

The QuietCool AFG can lower your cooling costs by up to 90%, and your attic's temperature by as much as 50 degrees. It comes in a fun green hue, and has a protective cage over the blades to minimize the possibility of accidents.
  • self-adjusting fan speed
  • energy-efficient motor
  • paintable to match any decor
Brand QuietCool
Model AFG SMT-3.0
Weight 20.5 pounds
Rating 4.8 / 5.0

2. Cool Attic CX1500UPS

The Cool Attic CX1500UPS sports an industrial look, but it is very safe, with a thermally protected motor, so it doesn't risk overheating. It is galvanized to prevent corrosion, and can move as much as 1,300 cubic feet of air per minute.
  • relatively quiet during operation
  • easy setup requires little wiring
  • includes an adjustable thermostat
Brand Cool Attic
Model CX1500UPS
Weight 12.6 pounds
Rating 4.8 / 5.0

1. Natural Light SAF36B-FL

The Natural Light SAF36B-FL is a solar-powered model that can be installed easily by most home owners. The panel can be adjusted to lie flat or sit at an angle as great as 45 degrees, in order to catch the most sunlight possible.
  • panel produces 36 watts of power
  • fan works for over 2600 square feet
  • can be connected to a thermostat
Brand Natural Light
Model SAF36B-FL
Weight 30 pounds
Rating 4.6 / 5.0

Proper Residential Ventilation

According to the United States Energy Information Administration's Residential Energy Consumption Survey (or RECS), the average American single family residence expends approximately 48% of its total energy costs on heating and cooling of the home. While this is down from an estimated 57% of total electricity usage in the early 1990s, thanks to better insulation and more energy efficient HVAC systems, it is still a substantial use of energy, and thus a major part of the annual expenses a family incurs simply by living their lives.

Cooled air during the summer and warmed air during the winter are not mere luxuries; it is essential for both comfort and for safety that you maintain temperate living conditions inside your home. That means the use of a central heating and cooling system whenever possible, as these systems are ultimately the most efficient and cost effective way to heat your home during the winter and cool it down in the summer.

Installing a central heating and cooling system costs much more than the purchase of stand alone space heaters or wall unit air conditioners, but such systems use less energy to achieve the same degree of cooling or warming as stand alone units, so ultimately the costs of operating such individual units will surpass the initial cost of the central system.

Along with reliable heating and cooling, proper circulation and ventilation are also important aspects of maintaining safe interior air. And as poor Indoor Air Quality (or IAC) can lead to myriad health complications, including a worsening of asthma, allergies, or even headaches, dizziness, fatigue, or cognitive issues, according to the Environmental Protection Agency, again these are not matters of mere comfort, but of health and safety.

If your home has a central air conditioning and heating system, then simply making sure to replace the air filters as directed and having occasional system evaluation and cleaning by professionals should be all that's needed for safe, clean interior air, but if this system does not have venting in your attic area, then the addition of an attic fan may be warranted. And in the home without central air, not only can an attic fan do wonders to lower the interior temperature during the warmer months, but it can also help to keep the air in your residence cleaner and safer, too.

An Attic Fan For Temperature Regulation

In the hottest days of the summertime, when the ambient air temperature is in the 90s or above, and when the sun is beating down onto your home's roof for hours at a time, the temperature in your attic can soar to as much as 150 or even 160 degrees Fahrenheit. The mixture of hot air rising from inside your home and the conditions extant in most attics, including that solar heat from above and, often, a lack of proper insulation and poor ventilation, act to hold that heat which in turn can dramatically warm up the rest of the home. That means less comfort, and/or it means much more use of your HVAC systems, which puts undue strain on the hardware and increases your home's electrical bills.

A decent attic fan can move dozens of cubic feet worth of air per minute, providing a complete "air change" many times per hour. (An air change is when all the air in a space, in this case the heated air in the attic, is cycled out in favor of new air naturally drawn in through the vents based by the movement from the fan.) A continuous air change cycle could see attic temperatures lowered by as much as fifty degrees or more. That means, for example, that on a day when it is 95 degrees F outside, an attic without a proper attic fan may be 160 degrees in temperature, while an attic with a fan will be only a modicum above 100 degrees. And it means the house below the attic will be much, much cooler still.

The same attic fan that helps to keep your attic (and residence writ large) much cooler in the summertime can also help mitigate one of the most common issues an attic faces in the colder months: moisture build up.

The Attic Fan For Moisture And Mold Reduction

There are few words a homeowner wants to hear less than the word "mold." And there are few conditions under which mold is more apt to grow than in a space that is dark and moist. If you have ever stuck your head up into the average home's attic during the late spring, the summer, or the early fall, then you know those two adjectives -- dark and most, e.g. -- are perfect descriptors of the space.

A warm, moist summertime attic is especially ripe for mold and mildew growth, but the hot temperatures of the summer often preclude much moisture buildup. In winter, the warm air drifting up from your home meets the cold air seeping in from the roof and vents and often creates the ideal conditions for mold to take hold.

To keep the attic free of mold, keep it free of moisture. That starts with ensuring your roof is in good working order, as a leaking roof is the number one cause of mold build up. It will come as little surprise that another leading cause for attic mold is leaking pipes or a faulty furnace or water heater.

But even in an attic with a solid roof and without leaking pipes, moisture will still be an issue without proper ventilation. An attic fan can help suck moisture out of the air and maintain the airflow needed to preserve a dry environment in your attic. and as attic fans have a price range between $75 and a few hundred dollars at the highest end, the one time installation of one of these units is much cheaper than thousands of dollars most mold remediation processes cost.

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Last updated on May 04, 2018 by Brett Dvoretz

A wandering writer who spends as much time on the road as behind the computer screen, Brett can either be found hacking furiously away at the keyboard or perhaps enjoying a whiskey and coke on some exotic beach, sometimes both simultaneously, usually with a four-legged companion by his side. He hopes to one day become a modern day renaissance man.

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