5 Best Solar Attic Fans Reviews for 2021

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Best Solar Attic Fans

So your attic gets blazing hot even though you have the best insulation system installed there? Also, do you hate how the hot weather ramps-up the electricity bills as you have to spend more to keep the attic cool?

Well, you are not alone! Being the topmost part of your house, the attic remains exposed to direct sunlight, and that’s why it’s too hot up there. The only solution to this problem is having one of the best solar attic fans.

A solar-powered attic fan will not only keep the attic cooler; also you can save a lot on the electricity bills, so it’s a win-win!

But, wait, do you know what’s the best attic fan available in the market? Or what factors to consider before buying one?

We know most homeowners aren’t aware of these types of fans, and that’s why we are here with these best solar attic fan reviews.

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    Short on Time? See our Top Rated Solar Powered Attic Fans!

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    Amtrak Solar's 40W Solar Attic Fan
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    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
    ECO-WORTHY 25W Solar Attic Vent Fan
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    20-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
    Remington Solar 20-Watt Solar Attic Fan

    Best Solar Attic Fans – Top Reviews of 2021

    1. ECO-WORTHY 25W Solar Powered Attic Vent Fan

    ECO-WORTHY 25W Solar Powered Attic Vent Fan


    • Low voltage motor design
    • Noiseless operation
    • Works on cloudy days


    • Doesn’t consist of a smart thermostat
    • Doesn’t feature windproofing

    ECO-WORTHY 25W solar powered attic fan isn’t just built for your attic, but can also be installed in your garage space for the best cooling effects. It keeps cold humidity at bay, and keeps the surrounding temperature conditions cool during hot summers. It is one of the best solar powered attic fans in the market owing to its noiseless operation, high storage power and motor life span. This solar attic fan is ideal for pet house ventilation since it completely uses solar energy thereby reducing energy costs.

    This solar powered attic fan is suitable for large to medium sized homes, with a 2200 sq.feet coverage area. Cooling costs can be cut down drastically with this single 25W exhaust fan that regulates air flow approximately of up to 1500 cubic feet per minute. To ensure noiseless operation, the cooling fan has been designed with a high efficiency motor (brushless). The lifespan of the motor is more than 10,000H making it a durable device for life.

    The 25W solar fan features a connector to simplify the installation process. The fan blades are made from aluminum alloy that are durable and solid. The solar panel is poly foldable with angle mounting brackets which ensures ample solar energy is collected. You can easily change the direction of the solar panel getting an optimal angle for maximum solar efficiency. The solar vent includes mounting holes so you can easily fit it into a gable roofing or any other productive space.

    2. iLIVING Smart Exhaust Solar Roof Attic Fan

    iLIVING Smart Exhaust Solar Roof Attic Fan


    • Graded IP68 waterproof rating
    • Backed by 15 years warranty
    • Lightweight and portable
    • Compatible with cement and wood walls


    • Noisy operation
    • Expensive model
    • AC/DC adaptor is sold separately

    If you’re looking for a versatile exhaust fan for your attic room, iLIVING Smart Exhaust Solar Roof Fan is an ideal choice for homeowners looking for multiple benefits. This reliable and efficient ventilation unit is a top performing attic fan because of its durable build, waterproof construct and adjustable panel.

    iLIVING Smart Exhaust Solar Fan is a powerful device that can provide ventilation for attic rooms measuring 2000 sq.feet. It is meant for homes that are huge in size especially since it can regulate air at 1750 cubic feet per minute. The compact size of this solar powered attic fan ensures steady placement of the fan.

    This smart exhaust fan helps to minimize the run time of your HVAC system, maintaining a consistent temperature overall. It features a 20-watt solar panel made from polycrystalline material that powers the aluminum based exhaust fan to prevent moisture build-up. It uses passive solar energy stored within the panels to disperse heat.

    The solar panels can easily be positioned in multiple directions, so you can set up the panels at 0, 15, 30 and 45 degree angles. The mounting brace can be vertically aligned to a basement, gable wall or crawlspace. You will need to mount the panel in a horizontal position if your house has a pitched rooftop. The mounting brackets can also slide over rails easily to get a better position between studs and frames.

    A great feature to note about this solar powered attic fan is its smart function – smart thermostat   that controls temperature range of 65-130 F. It includes an Enable/Disable smart feature to regulate your attic’s ventilation needs. You can have complete control of the exhaust fan by setting the smart thermostat to your preferred temperature.

    Suitable for both round and square shaped vents, the solar powered exhaust features a 14 inch fan with wide aluminum blades to facilitate quick exhaustion of both moisture and heat. The motor is waterproofed so it can withstand random splashes, or lightweight drizzle. You don’t require any hard wiring to install the panel and the fan since the device is meant to work with solar energy, without the need of electric power.

    3. Amtrak Solar Attic Fan

    Amtrak Solar Attic Fan


    • Comes with a free thermostat
    • Features 25 years warranty
    • Suitable for both roof and gable


    • Makes a lot of noise
    • Blades often wobble

    Attic fans are a great investment if you want to reduce energy consumption, keep your home cool during the summers and humidity free during the winter season. Amtrak’s solar attic fan is a powerful addition that works great for small sized homes. It is one of the easiest solar attic fans to install and fit into the attic, RV, garage or even a greenhouse.

    This gable-mounted fan can offer air flow regulation up to 2250 sq.feet and comes with a 12V DC fan that is thermally protected. The solar fan is designed with galvanized steel blades that offer powerful rotational speed for extracting hot air. It can efficiently reduce attic temperature from 150 degree F to 90 degree F.

    The solar panel system is made from a 40W polycrystalline panel that is powered by a brushless DC motor. You won’t need any additional wiring to set up the unit and it doesn’t require any battery to function. This is because the panel immediately switches the high volume fan on, the moment the sunlight hits the panel surface.

    Since the solar attic fan features 4 Z-brackets, you won’t find any problem installing the fan into a gable vent. The Amtrak 40W solar attic fan includes a free thermostat so you can regulate temperature conditions while hot air is pulled out. The cooling process is natural and reduces carbon footprint massively. During the winter season, condensation rate is reduced drastically and in turn your attic doesn’t have any mildew or mold build-up.

    4. Remington Solar 20-Watt Attic Fan

    Remington Solar 20-Watt Attic Fan


    • Texas Windstorm Certification
    • Brushless DC motor for noiseless operation
    • Flashing and shroud are well protected


    • Very expensive attic fan
    • Brackets easily rust

    Remington solar attic fan is American in design featuring in-built temperature regulators and a lifetime warranty that tops every other brand in the market. This high-end solar powered fan lowers home temperatures massively during the summer season. It utilizes free solar energy, and reduces energy consumption from your HVAC unit saving you thousands of dollars.

    During the winter season, Remington solar attic fan combats mold and moisture since it consists of an automatic humidistat. Fueled by natural sunlight, this solar exhaust fan can be installed easily the moment it is out of the box, and doesn’t require additional wiring. For improved circulation, the attic fan can be installed in places such as storage sheds, garages, barns, workshops, and lofts.

    Another addition to this model is a thermostat that helps regulate temperature conditions specifically during hot summers. If you want to take the load off your furnace, or HVAC units at home this attic fan is the perfect choice. It comes with a hybrid adaptor so it can function at night with ease. The brushless motor works smoothly without any friction so you will barely hear any noise while the attic fan is turned on.

    While the 20W fan effectively regulates 1800 sq. feet of attic space, it doesn’t cover as much of ventilation capacity as the other models in the market. However since the attic fan helps reduce the risk of ice-damming it is an ideal choice for customers living in ice-clad zones. The stainless steel hardware also comes with an animal protection screen and weather tight installation. The thermostat and humidistat turn on at 80 degree F and at 75% humidity respectively.

    5. ECO LLC 3000 CFM Solar Powered Attic Fan


    • Compact design reduces drag and pressure
    • Is great to eliminate moisture buildup
    • Affordable and budget friendly


    • Makes a lot of noise
    • Waterproofing is poorly executed
    • Leakage is a problem

    Stainless steel design, durable and sturdy, this solar attic fan is a heavyweight unit that comes with quick connect wires and brackets for simple installation. The solar powered attic fan is auto powered and seamless. The air volume is massive with this unit because it features an aerodynamic design that decreases drag.

    ECO LLC solar powered attic fan is a popular choice since it can regulate 11.6 cubic feet air per minute. The solar fan is powered by the sun’s energy therefore it uses zero electricity and lowers your energy consumption by a tenth fold. Perfect for garages, boats, green houses and even caravans, this solar attic fan clears air instantly. To fit it perfectly into a vent, the hole needs to be less than 5 inches. More than an active blower, this attic fan relies more on passive ventilation.

    The solar attic fan can regulate temperatures up to 110 degree F, functioning well even after the sun comes down. With 3000 CFM efficiency, the ventilation capacity goes up to 4000 sq.feet which is one of the highest amongst its type. The motor fan is upgraded to provide long term performance, and for added security the connecting wire is dense and solid. If you’re on a budget, this should be the perfect choice because it is affordable and multi-utilitarian.

    Buying Guide for the Best Solar Attic Fans

    Solar attic fans come in a variety of types based on your needs, and what suits you best. Whether your house has a pitched roof or a flat roof, the square footage of your attic space and the material used for the panel work – all these factors are important to note when you’re buying a solar attic fan for the first time.

    What is a Solar Attic Fan?

    Solar attic fans are ventilation units you can install in your attic rooms, garages, store rooms or even a greenhouse. It uses renewable energy like the sun’s radiation to power the exhaust fan that efficiently clears away hot air during the summer season. In cold winters, it controls humidity levels and prevents the buildup of mold and mildew. Moreover with energy consumption drastically reduced, you can save on electricity.

    Types of Solar Attic Fans

    iLIVING Smart Exhaust Solar Roof Attic Fan

    Roof Mount Solar Attic Fan: Typically the kind of attic fans that can be installed on pitched rooftops, this type of ventilation unit can also be used in barns, workshops, garages and sheds. This type of roof hugging mounting is ideal to combat tornadoes and hurricanes since it doesn’t require any form of panel adjustment.

    Gable Mount Solar Attic Fan: This type of attic fan is installed right behind an existing gable vent so the panel can be placed on an exterior wall. The gable fans have larger blades as compared to rooftop attic fans. This is because such units receive less solar energy so with a high motor power, the fans can easily replace hot air reducing the temperature considerably.

    Solar Attic Fans Vs. Electric Fans

    Green energy models are built to reduce electricity consumption for a healthier and more sustainable lifestyle. If you want to rid your attic space of scorching heat and humidity levels, an attic fan can prove to be very inexpensive. The bigger question is – solar attic fan vs electric fan; the former reduces energy bills while the latter requires more expenditure in general. Here’s why you should consider a solar powered attic fan over an electrical fan:

    Solar Attic FansElectric Fans
    Ventilation capacity between 800 to 2500 CFMVentilation capacity between 1200 to 3000 CFM
    Environmentally safeNot environment friendly
    Uses sun’s energy which is free of costUses electrical current, increasing energy bills
    Solar panels can be installed by homeownersStructural installation requires a professional

    How Do Solar Attic Fans Work?

    When the sun rays fall on your rooftop, it heats up any enclosed spaces like an attic during a hot summer day. Even if you have a gable roof that allows some form of circulation, the heat still remains and makes your attic an uncomfortable space to be inside. There isn’t enough pressure to draw out the hot air for optimal circulation and ventilation.

    In such a case, a solar attic fan that’s attached to a photovoltaic panel stores plenty of solar energy to power the exhaust for adequate cooling. Once the air movement increases, the hot air is replaced by fresh, moderately warm air. With increased air circulation by the minute, there is enough pressure for the hot air to move out. Solar powered attic fans can cool your attic spaces up to 40 degree F straight.

    However solar attic fans also prevent moisture from seeping inside during cold months. While passive ventilation isn’t enough to prevent mold and mildew build-up, a solar attic fan that runs on free solar energy, also controls humidity levels. It blends comfortably into your roofline since this unit comes with suitable mounting brackets for the best solar orientation. You can choose either gable, curb or roof type solar attic fans.

    Benefits of Solar Powered Attic Fans

    1. Financial Savings: Heat and moisture can easily deteriorate the interiors of your home but a solar attic fan keeps ventilation active and air flow regulated. What’s best is that since it is solar powered, it decreases the workload of heating furnaces and HVAC units. This keeps your energy consumption in control, and avoids heavy bills weighing you down.

    2. Structural Security: Since solar powered fans are waterproofed, and come in solid construct they remain durable despite a storm or hurricane. It doesn’t require a lot of time and effort in its installation process, thereby ensuring there is no structural change/damage to your property. These are self-sufficient models that can work independently without electricity.

    3. Durability & Low Maintenance: Solar attic fans are easy to use, install and maintain for long periods. Many brands offer years of warranty, and secure added protective cover to the panels for a longer lifespan. This solar attic fan is environmentally safe allowing homeowners to utilize renewable energy for active cooling purposes and to keep humidity in check.

    4. Can Withstand Extreme Weather: Many reputable brands have released solar attic fans that can withstand harsh weather conditions like hailstorms, frost winds etc. Such attic fans are performance tested to combat heavy wind load pressure. There are three certifications present for solar attic fans – Texas windstorm certification, Florida windstorm certification and Miami-Dade windstorm certification. Apart from this, solar attic fans are also structured to prevent ice damming thereby protecting the structural integrity of your home.

    Things to Consider While Buying Solar Attic Fans

    1. Ventilation Capacity

    When you’re out buying the right attic fan, the size of the fan depends entirely upon the size of your attic space. An active vent usually has circulation capacity of ten volumes per hour. You will need to find the size of your attic in cubic feet and right after find the volume in cubic feet. It is equally important to pick an exhaust fan that features a powerful motor for fast air circulation.

    2. Size of the Attic Fan

    GBGS Solar Attic Fan

    While some solar powered attic fans are small in size and portable, there are heavy weight models that are wind resistant. To know what best suits you, find out the size of your attic space, and the type of roof your home has. This makes it easy to find an attic fan that suits either a gable vent or shingled rooftop. Also consider the local climate and weather in your region to pick out a special edition.

    3. Material & Construct

    Stainless steel is the best quality material used for making the solar fan blades since its durable and high performance. The solar panels should be weather-resistant, and should come with a flexible mounting bracket to get maximum efficiency.

    Most solar panels feature non-corrosive aluminum plated blades for long term usability. Manufacturers also use high grade aircraft aluminum for creating the housing of the fan such that it remains protected during a weather storm.

    4. Adjustable Thermostat

    iLIVING Smart Exhaust Solar Roof Attic Fan

    Some models come with built-in thermostat and humidistat to improve air quality and have better control over the ventilation process. Once you’ve set the thermostat till a certain temperature, the fans will automatically turn on if the room overheats. Likewise an adjustable thermostat shuts off the fan once the room is cool enough and temperature level drops down to optimal range.

    5. Type of Solar Panel

    Apart from the type of fan, the solar panel that comes with the exhaust setup is equally important to consider. Your solar panel contains photovoltaic cells that capture the sun’s radiation to power the exhaust fan. Your solar panel can be 20W or more, and there are models that have lesser efficiency depending upon the size of the fan. Typically manufacturers produce solar panels with efficiency between 30W to 70W for attic fans.

    6. Noise Level

    Homeowners generally go for solar attic fans that produce the least amount of noise. Many solar attic fans make soft, humming sounds that are barely audible. The fan blades generally make a lot of noise when they’re turned on but solar attic fans are designed with brushless blades for quiet performance. If the sleeve or ball bearings come loose, or there is lack of lubrication, this too can produce noise.

    In such cases I look for a solar attic fan that consists of multiple large blades, brushless motor and a belt driven fan. But you must always check if the fan blades are balanced properly with optimal insulation for preventing noise, clutter and to ensure safety.

    How to Install Solar Attic Fans?

    How to Install Solar Attic Fans
    • The first step is to allocate the space/area where the solar attic fan is to be fitted. The vent between the two roof rafters has to be marked to achieve this.
    • Drive nails into the vent’s center, right after which you need to install the roof bracket.
    • Using a home compass, observe and mark the flashing of the vent.
    • Make sure you fall-arrest the roof bracket for maximum stability.
    • Using a utility knife, cut through the solar shingles along the roof’s circular outline.
    • Remove the shingles from around the roof vent, and from around the respective circle.
    • Cut a hole into your roof, apply tri-polymer cement around the hole and set the roof vent above the hole.
    • After this screw the fan’s flashing to the roof with ample chalk around the flashing.
    • Replace the shingles with roofing nails to finish the installation.

    Installation Tips for Solar Attic Fans

    • Always consult a professional roofing contractor before installation.
    • Make sure you check the transmission between the communication and remote control.
    • Read the instructions thoroughly before you begin the installation process.
    • Follow the step-wise process to install your solar attic fan.
    • To get the best results, your solar attic fan should be installed two feet below the roof’s ridge line and at close range with your house.
    • Always consider the size of attic, and the amount of sunlight it receives since that affects the size of the vent..
    • Solar vents don’t work well on cloudy days but if the panel can retain solar energy for long periods, your attic fan will function efficiently.

    Frequently Asked Questions - Best Solar Attic Fans

    Start with finding out the volume of your attic. Multiply these dimensions by 0.7 cubic feet per minute. If you have a steep roof, add 20% to this value or if you have a dark roof, then add 15% to this value. Since solar attic fans come within the range of 800 to 1600 cubic feet per minute, a single solar attic fan on an average has a ventilation capacity of 2000 square feet.

    A great home addition to your air conditioning system is a solar powered attic fan that helps reprieve energy cost since it reduces continuous use of air conditioning units. With a solar powered attic fan, the temperature conditions naturally drop since the fan regulates heat levels by exhausting hot air within that confined space.

    Solar attic fans can replace expensive air conditioning units because the fans are built to reduce hot temperatures for a cooling effect. The fans pull superheated air outside such that cool air replaces it.

    Solar attic fans are designed in a way where they can withstand hurricane winds. The construct of these fans is windstorm approved that can withstand wind pressures of over 170 MPH.

    Solar attic fans are compatible with roofing material like tile, clay, wood shake, and composite shingle.

    Solar attic fans typically come with a long power cable, installation cord and a mount. To achieve maximum sun exposure, a lengthy power cord is ideal for homes where there are tall trees, plenty of shade and crossing shadows.

    Solar attic fans are designed to be maintenance free but they may require an occasional wash and brush down.

    There are solar attic fans designed to offer noiseless operation. Such fans ensure optimal airflow thereby producing sound that’s less than 30 decibels.

    The solar attic fan should be oriented towards the south, and installed in a location that receives ample sunlight. This depends upon which side your roof surfaces, so if you have a southern facing roof, the attic fan should be installed towards this side.

    Top quality solar attic fans are made from durable material, like zinc alloy construct and stainless steel with additional protective coating. This helps combat corrosion from coastal air exposure especially for those residential homes that are located near the sea.

    Final Thoughts

    You will come across many solar attic fan reviews today as homeowners are finally shifting to sustainable forms of energy usage. Solar attic fans can make a huge difference in reducing electricity bills annually, especially if you’re living in a sunlit haven. Not only do you save your home from moisture and heat, but the air circulation remains normal and clean. Solar attic fans come in various options, suitable for all homes and ideal for both summer and winter seasons.

    A performance efficient and cost effective solar attic fan to consider from our list of best solar attic fans is ECO-WORTHY 25W Solar Powered Attic Vent Fan since it is maintenance free and comes with all necessary features. On an average, this solar attic fan consists of a ventilation capacity of 1960 CFM that covers 2200 sq.feet of area. It is sleek and lightweight so installation is simple. The 25W solar panel is foldable, and comes with 6 pc mounting brackets. For a small to medium sized space (garage, attic, loft or even a barn) this solar powered exhaust fan is an ideal choice that’s constructed using high quality material, and offers a noiseless operation.

    ECO-WORTHY 25W Solar Powered Attic Vent Fan
    308 Reviews
    ECO-WORTHY 25W Solar Powered Attic Vent Fan
    • 【 Decent Warranty for Its Part 】- We always stand behind our products, if the motor of the fan...
    • 【 Efficient in Low Light Condition 】- The solar attic fan can work automatically at low voltage,...

    Last update on 2021-09-05 at 22:45 / Affiliate links / Images from Amazon Product Advertising API

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