What’s The Best Solar Attic Fan? Top 10 Revealed

Nothing’s worse than a hot attic, especially when you’re storing moisture or temperature sensitive items. Installing an exhaust fan is easy enough, but as they require a power source, it’s necessary to run electrical cords up into the rafters, which is both time consuming and potentially a fire hazard.

Fortunately, a recent invention alleviates these issues in one fell swoop—the solar attic fan. All that’s required is a simple one-time installation as all the power necessary for the unit is drawn from the unit’s outwardly facing solar panels.

We’ve taken a look at several of the most popular solar attic fan models available on the market and compared their pros, cons, and feature sets available at a range of price points.

Comparison Table

How We Reviewed

By considering factors such as the value for the price, features, and quality of materials, we’ve compiled the following list of the top 10 solar attic fans, with special consideration to the pros and cons any one model may have over the others.

As potential buyers tend to have differing needs, and as the above features tend to vary significantly depending on the price range, the following models are listed in no particular order.

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Overall Price Range Of This Product

The models of this list range in price from $50-$450. A higher price most usually coincides with an increased amount of air moving power, which is to say a larger and more powerful solar panel and fan, as well as more durable and weather resistant materials and construction.

Top 10 Best Solar Attic Fan

Solar Attic Fan 36-watt

Solar Attic Fan 36-watt - Black - with 25-year Warranty - Florida Rated by Natural Light
  • Industry Leading 25-year limited warranty on entire unit.
  • Highest quality materials in any Solar Attic Fan on the market.
  • Easily installed with No wiring required.
  • Optional snap-on thermostat for use in colder climates (sold separately).
  • All necessary installation hardware included.

Features

This model features a broad and comprehensive 25-year warranty, which ensures a long period of operation—something crucial for such outdoor appliances. Extremely high-quality materials are used, pushing this model into the uppermost bracket of build quality in the market.

An optional snap-on thermostat is included for monitoring temperature in colder climates. The motor is powered by a 36-watt solar panel. It can be installed on 3/12 to 12/12 pitch roofs and is capable of moving 1628 cubic feet of air per minute.

Price

This product can be purchased for a relatively expensive price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from individual manufacturer’s websites and other online marketplaces such as Amazon.

​​​​Pros

  • Extended warranty period
  • High-quality build materials
  • Large volume of air moved per minute

​​​​Cons

  • Cannot be installed on turrets, flat roofs, or tiled roofs
  • Relatively expensive model
Quality Check Price Rating

$$$

Ultra Low-Profile 24-watt Natural Light Solar Attic Fan

Ultra Low-Profile 24-watt Natural Light Solar Attic Fan
  • Discontinued model. Fixed Built-In 24-Watt Solar Module for Ultra-Low Profile.
  • Black housing with Black background for lower visual impact.
  • Designed for use on pitched Fiberglass-Asphalt shingle roofs.
  • Industry leading Manufacturer's 25-Year Warranty on solar module, motor and housing.
  • Runs directly from attached solar module no wiring required (optional thermostat sold separately).

Features

This model is the smaller and less expensive counterpart to the model above. It features virtually the same accessories and materials, but with a smaller motor powered by a 24-watt solar panel. It is capable of moving 1339 cubic feet of air per minute.

Smaller models such as this tend to have the ability to more closely serve the space of small attics without breaking the bank.

Price

This product can be purchased for a relatively expensive price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Extended warranty period
  • High-quality build materials
  • Excellent choice for smaller attics

​​​​Cons

  • Cannot be installed on turrets, flat roofs, or tiled roofs
  • Relatively expensive model
Quality Check Price Rating

$$$

Rand Solar Powered Attic Gable Fan

Rand Solar Powered Attic Gable Fan - 30 Watt Solar Panel - 1911 CFM Ventilator Fan - with Thermostat
  • Solar Powered Gable Attic Fan
  • 30 Watt Solar Panel with adjustable angle mount
  • 1911 CFM (cubic feet per minute) of ventilation
  • Can successfully cool an attic space up to 2720 square feet
  • Includes 85 degree thermostat

Features

This versatile model is to be fitted into the gables of the home, coming with an auxiliary solar panel to affix to any sort of roof, as well as a lengthy cable to power the unit with a solar panel from afar.

As a result of its design, as long as a gable vent is present in the attic wall, no hole cutting is necessary. The model sports a 30-watt motor and is capable of moving 1911 cubic feet of air per minute. A thermostat is included.

Price

This product can be purchased at a fairly inexpensive price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon..

​​​​Pros

  • Inexpensive for air volume moved per minute
  • No hole cutting necessary for installation
  • Solar panel is compatible with all roof types

​​​​Cons

  • A gable vent must already be present in the attic
  • No warranty coverage
Quality Check Price Rating

$$$

Brightwatts Premium Solar Attic Fan

Brightwatts Premium Solar Attic Fan, (25 Watts)
  • Up to 1280 CFM
  • Up to 1800 sq. ft. Venting Capacity
  • Built-in Thermostat
  • Heavy Duty Powder Coated Galvanized Steel Construction
  • High-Efficiency Blades

Features

This model ships completely assembled and is specifically designed to keep the weather out as it cools the inside of the attic.

It features heavy duty powder coated galvanized steel materials. It possesses a 25-watt motor, is capable of moving up to 1280 cubic feet of air per minute, and features high-efficiency blades.

Price

This product can be purchased at a fairly inexpensive price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Ships fully assembled
  • Extremely weather resistant model
  • Heavy duty construction

​​​​Cons

  • Relatively high price for the amount of air moved per minute
  • Doesn’t ship with additional accessories or instruments
Quality Check Price Rating

$$$

Amtrak Solar’s Powerful 50-Watt Attic Fan

Sale
Amtrak Solar's Powerful 70-Watt Galvanized Steel Solar Attic Fan Cools Your House Ventilates Your House, Garage or RV and Protects Against Moisture Build-up
  • 70 Watt Solar Panel 3 Times More Powerful than Most Competition
  • New 10 Inch Fan Blade. Powerful enough to open louver. Easy to install with quick-connect wires.
  • Most Powerful Fan Motor
  • 25 Year Warranty
  • Made in USA.

Features

This model is designed for usage with preexisting gable vents and sports a large and energy efficient solar panel with a long cable. It is powered by a 40-watt motor and is capable of moving up to 1750 cubic feet of air per minute. A broad and comprehensive 25-year warranty is included.

Price

This product can be purchased at a fairly inexpensive price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Inexpensive for air volume moved per minute
  • No hole cutting necessary for installation
  • Solar panel is compatible with all roof types
  • Extensive warranty coverage

​​​​Cons

  • A gable vent must already be present in the attic
  • Such a large solar panel may not be desirable for some consumers
Quality Check Price Rating

$$$

Rand Solar Powered Attic Fan-8 Watt-W 

Rand Solar Powered Attic Fan-8 Watt-W Roof Top Ventilator NEW!!
  • Always runs on free solar power. If the Sun is shining on the solar panel, the fan will be spinning.
  • Drastically cuts your cooling bill. Pays for itself in a VERY short time, good for the environment.
  • Ventilates up to 700 square feet of attic space with its 435 CFM capacity. For installations with larger space or higher heat load, you can install more fans or use one of our larger 30W or 40W rooftop fans.
  • High Efficiency long life brushless motor starts up even in lower light and overcast conditions. If you are looking for a fan that will run at night, check out our 10W and 30W fans with battery backup.
  • No wiring to perform. Unit is self-contained. Just mount it to the roof and it works automatically. If you are looking for a fan that will allow you to adust the solar panel angle, check out our larger 30W and 40W rooftop fans.

Features

This inexpensive model doesn’t move much air but makes up for it with cheapness, making it ideal for the smallest of attics.

It functions with a high efficiency brushless 8-watt motor, can move up to 435 cubic feet of air per minute, and sports a high impact plastic housing. A 20-year warranty is included..

Price

This product can be purchased for an affordable price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Large year warranty
  • Inexpensive small-scale option

​​​​Cons

  • Engine isn’t terribly powerful
  • No energy storage means it only operates during the day
Quality Check Price Rating

$$$

HQST Solar Powered Roof Mount Adjustable Attic Fan

HQST Solar Powered Roof Mount Adjustable Attic Fan with 30W Solar Panel
  • The HQST Solar Attic Fan is an all-in-one unit that is designed to lower your attic temperatures and stop damage from moisture.
  • The built-in, adjustable 30watt panel maintains a strong air flow that makes this a great product for proper attic ventilation.
  • With a one-time installation, this unit becomes effortless and is easily installed on pitched fiberglass asphalt shingle roofs.
  • You can adjust the panel up to a 45 degree angle or detached it and mount remotely for maximum exposure to the sun.
  • Durable rust-free aluminum ensures long life & no maintenance. Optional snap-on thermostat for use in colder climates.

Features

This versatile and streamlined unit features a solar panel adjustable up to 45 degrees, along with element-resistant materials and an included snap-on thermostat for cold climates.

It sports a 30-watt motor, which generates an air flow of 860 cubic feet per hour. A 1-year warranty is offered by the manufacturer.

Price

This product can be purchased at a fairly inexpensive price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Flexible installation with a highly adjustable solar panel
  • Extremely attractive and streamlined design

​​​​Cons

  • Relatively low air flow for the price point
Quality Check Price Rating

$$$

ECO-WORTHY 25W Solar Powered Attic Ventilator

Sale
ECO-WORTHY 25W Solar Powered Attic Ventilator Gable Roof Vent Fan with 30W Foldable Solar Panel - Solar Fans for Home Attic, Greenhouse, RV or Outdoor, Ready-to-Use Solar Vent Fan, Solar Roof Vent
  • 【Decent Warranty for Its Part】We always stand behind our products, if the motor of the solar fan doesn't work, or you find the unit miss some part, such as the screws, please feel free to contact our customer service for help, we will send you replacement parts, thanks. And the motor also can be purchased by ASIN B01L1LI418
  • 【Efficient in Low Light Condition】 The solar attic fan can work automatically at low voltage, the Min Voltage to operate is 4V, so you also get great ventilation even on cloudy days.
  • 【 Cost-Saving & ​​​Affordable】 The solar fan system cools your roof and also reduces the load on your air conditioning system, it will cut your cooling costs with low electric power expense.
  • 【 Well-Made Quality】 The materials of the high volume solar attic ventilator is well built of good quality. The tolerances of the solar vent fan are pretty tight, and it runs reasonably quietly.
  • 【 Easy to Install 】 It's a ready-to-use solar fan for home, shed, garage or RV, outdoor, etc. The solar roof vent fan comes with a pre-installed 8-inch solar cable with quick-connector, and the solar panel comes 16 feet solar cable, which lets you to easily install it with the quick-connect wires. It could be installed in the gable vent or anywhere in the attic.

Features

This high-end model’s unique design and relatively powerful operation are paired with easy installation and an exhaustive 25-year warranty.

The high-quality powder-coated aluminum components and exterior increase durability. A 24-watt motor is incorporated for a maximum airflow of 1339 cubic feet per minute. This model’s slim design helps it withstand high wind weather conditions.

Price

This product can be purchased for a relatively expensive price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Long warranty period
  • Unique, practical design
  • Highly durable components and exterior

​​​​Cons

  • Relatively expensive model
Quality Check Price Rating

$$$

ECO-WORTHY Solar Powered Attic Fan

ECO-WORTHY Solar Powered Attic Fan Solar Venting Stainless Steel Solar Roof Vent with Rechargeable Battery for Attic Roof Shed RV Boats Caravan
  • 【 Cost-Saving & ​​​Affordable 】- Fully automatic operation powered by solar energy, not only cools your roof, but also reduces the load on your air conditioning system, and cuts your cooling costs with low electric power expense.
  • 【 Powerful & Built-in Battery 】- With inbuilt rechargeable lithium battery, the solar powered fan turns on as soon as the sunlight hits the solar panel, moves 11.6 cubic feet air per minute and keeps your roof, attic, or shed cool and ventilated with fresh air circulation all-day.
  • 【 Easy Installation 】- The solar attic fan has pre-drilled mounting holes, self-tapping screws for easy installation. It is a ready-to-use play solar fan, just take it out of the box, don't need any extra wiring.
  • 【 Well-Made Material 】- The material of this solar attic ventilator is stainless steel which provides longevity to the fan and prevents any rust from forming.
  • 【 Wide Application & Protect Home 】- It is the perfect solar powered exhaust fan for sheds, roof, attic, RV, boats, cabin, etc. It delivers an eco-friendly approach to neutralize moisture and drive out heat, protecting your home all year round.

Features

This small model is easy to install in walls, decks, or roofs. It features a uniquely attractive metal design. However, this model is almost so small-scale in power that it’s difficult for spaces any larger than a crawlspace. It is covered by the manufacturer under a one-year warranty.

Price

This product can be purchased for an affordable price.

Where to Buy

Available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Long warranty period
  • Unique, practical design
  • Highly durable components and exterior

​​​​Cons

  • Very weak in power—only suitable for the smallest scale spaces
Quality Check Price Rating

$$

Remington Solar Attic Fan

30-Watt Solar Attic Fan (Black) with Thermostat/Humidistat (22 x 22 x 11 IN) - Brushless Motor – Hail and Weather Resistant Solar Vent Fan – Solar Powered Attic Fan for Homes - by Remington Solar
  • REDUCES YOUR ENERGY BILL… COOLS YOUR ATTIC & HOME… IMPROVES HVAC & FURNACE PERFORMANCE: Summer months bring higher energy bills, partly because of the limited airflow into your Attic! This solar roof-vent fan Cools attics & Automatically keeps your Home Cooler… taking the stress off your Furnace, HVAC & your Wallet!
  • POWERED BY FREE SOLAR ENERGY… FIGHTS MOLD & MOISTURE: Finding Mold & Moisture in your home can cause severe consequences to your home’s value and your family’s health. This solar exhaust fan is fueled by the Sun & Automatically Combats Mold & Moisture!
  • BUILT-IN HUMIDISTAT & THERMOSTAT… HYBRID ADAPTER TO RUN AT NIGHT (SOLD SEPERATELY): Heat & Moisture damage your attic & can create HUGE repair bills… Remington Solar’s roof ventilation fan includes a Humidistat & Thermostat to automatically change airflow based on your attic’s needs! In addition, it can also be fitted with our Hybrid Adapter (Sold Separately) to Run at Night!
  • LIFE-EXTENDING, BRUSHLESS MOTOR… LITTLE-TO-NO-NOISE… HAIL & WEATHER RESISTANT: This Brushless Motor creates no friction & turns your motor without wear, giving your solar roof fan a longer life! It’s also near-inaudible & comes with a Texas Windstorm Document!
  • DESIGNED FOR A LIFETIME OF USE… 100% SATISFACTION GUARANTEE: You have nothing to lose! Simply try our solar powered ventilation fan & if for any reason you aren't satisfied, we'll refund EVERY penny within 30-days! We also back the Fan with a limited Lifetime Warranty!

Features

This high-end and large-scale model features a lifetime warranty and a uniquely designed case and solar panel layout, constructed of powder coated steel.

It sports a 30-watt motor capable of moving up to 1550 cubic feet of air per minute. This model ships with a built-in humidistat and thermostat.

Price

This product can be purchased for a relatively expensive price.

Where to Buy

This product is available wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from the manufacturer’s website and other online marketplaces such as Amazon.

​​​​Pros

  • Stylish steel exterior
  • Lifetime warranty
  • Humidistat and thermostat included

​​​​Cons

  • Air moving power could be better for the price
  • Expensive model
Quality Check Price Rating

$$$

Best Solar Attic Fan FAQ

Before we get to the list, here’s a brief rundown of the basics.

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What Are Solar Attic Fans?

Put simply, attic fans are fans with a self-sufficient power source. As a result of their self-powering nature, no electrical rigging is required for installation.

What Does an Attic Fan Do?

Heat rises, so the attic is usually the warmest place in the house. As a result, it’s necessary for trapped warm heat to have an escape route. Leaving attic windows open isn’t a desirable solution as animals may find their way inside.

An attic fan, however, efficiently allows hot air to be released from the attic through a hole in the roof, aided by an electrically powered fan.

How Do Attic Fans Work?

By creating negative air pressure in the attic, cold air from within the house is drawn up into the attic and hot air is blown out through the roof.

This lowers the over-all temperature of the attic, provided the proper airways are present from the house into the attic and the necessary number of attic fans are installed.

Larger attics, in particular, may require more than one fan to cool the space effectively. It is recommended to have one fan for every 2625 square feet of attic space.

Where Can You Buy Solar Attic Fans?

As solar powered outdoor appliances grow in popularity, their sale is becoming nearly ubiquitous.

They are available for purchase wherever outdoor appliances are sold, such as chain stores like Home Depot and Lowes, as well as from individual manufacturers’ websites and other online marketplaces such as Amazon.

The Verdict

When purchasing one or more solar attic fans, the most important thing to consider is the size and shape of the attic and roof. This will drastically change the number and types of models you should consider.

With a small attic, equally small models will suffice. With a larger attic, it’s most cost-effective to measure your attic carefully and choose the models and sizes that will least expensively get the job done.

We hope that by taking a closer look at these models we’ve made that process even easier.

Featured Image via Amazon

Janice Friedman
 

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