Best Solar Attic Fans in 2021 [Review & Buying Guide]

A solar attic fan is a convenient and efficient tool to ensure proper ventilation in your attic while saving on utility bills. It works by pushing out hot air and allowing cooler air to fill the attic.

Solar attic fans are motorized to produce enough power to get hot air out of the attic. They’re easy to install and set up because they don’t require you to change the electrical wiring of your attic or interfere with the structural design.

These fans are also powered by photovoltaic solar panels, saving you on the cost of electricity. If you’re looking for an efficient, energy-saving and environmentally friendly solution to cool your attic at home, solar-powered attic fans are a great option.

How do Solar Attic Fans Work?

The attic at our home appears to be very hot, since the hot air is lighter than the colder air, and it usually travels up naturally. As the attic is the highest point of any home, hot air often travels to this location.

Usually, we don’t care if our attic gets abnormally hot as we don’t spend a lot of time in this place, and we don’t put any air conditioner in this place either.

But most of us don’t know that the hot attic can reduce the efficiency of the air conditioning system because the attic is still hot. If your attic is very hot, it will work against your cooling system, and your cooling system will start to cool your house very slowly.

Your air conditioning costs will also rise dramatically, and it will also affect the life of the air conditioning system. An attic fan is going to be really handy in this kind of situation. The operating theory of attic fans is identical to that of the whole house fans.

But they don’t have a duct system, or they don’t need an open window to operate properly.

Normally, they are fixed to a gable vent or a dormer window or a roof. Attic fans suck out the hot air trapped inside the attic and the hot air circulating in the outside of your home.

They’re building a buffer zone between your house and the outside. This region is replaced by colder air from the outside. So it’s going to cool our home.

Benefits of Solar Attic Fans

Attic fans keep your attic cool in summer and all year. A cool attic means a reduced risk of damage to your roof, less heat radiating into the living spaces of your home, reduced pressure on your air conditioner, and lower overall air conditioning costs.

Attic fans do not only decrease the heat in your attic, but also reduce the accumulation of moisture. Moisture will promote the growth of mold and fungi, ultimately destroying the structure of your house.

If you select a solar-powered attic fan, you can enjoy all the advantages of an eco-friendly device that does not need extra energy.

Solar attic fans can reduce your electrical bills while allowing your air conditioner to run optimally, not overtime. Plus, since there is no wiring, solar-powered attic fans are easy to mount and easy to maintain!

Types of Solar Attic Fans

Roof-Mounted

These fans need a hole in the roof of the vent. The fan is then mounted above the hole and covered with shingle sheets. Roof-mounted solar attic fans can take longer to install—and some customers prefer a roofer to install—but they are also more energy-efficient than other versions.

Roof-mounted solar attic fans are available in regular and hybrid versions, which means they come with an adapter so that they can operate on your home’s electricity at night to keep your attic cooled down.

Gable Mounted

Unlike roof-mounted solar attic fans, which require you to cut a hole in your pocket, the gable-mounted solar attic fans are easier to install. The installation method is simple: connect the wires, fasten the device to your gable, and you’re finished. Like roof-mounted units, some are available with adapters, and others do not.

Portable

In addition to their lower price point, the key advantage of portable solar attic fans is that you can take them with you on road trips, fishing trips, or set them up outside while you’re working. You can also hang a fan out of a tree. The downside is that they seem to be less powerful than other solar-powered attic fans, but they are still a great choice.

Considerations When Buying a Solar Attic Fan

Materials

Your attic fans must be made of material that is sturdy enough to survive the excess heat that can build up in the attic. Under these conditions, cheaper attic fans with plastic components may begin to fail over time.

In winter, plastic is often very brittle, making it easy to snap a fan blade under normal use. Instead, choose a metal construction fan.

Both the body and the fan should be made of sheet metal and steel, galvanized or painted, if possible. These materials are much more stable than plastic in fluctuating temperatures and are well resistant to moisture.

Easy to use

Attic ventilation doesn’t do you any good if you find it too difficult to turn on or off. Many full-house models now come with remote controls that allow you to turn the fan down from the floor below and customize its settings with the touch of a button.

Attic fans are great for homeowners who want to be able to forget that their fan is out there. Most of them either come with a programmable thermostat or can be wired to one that will turn the fan on when the attic reaches a set temperature—no need to flip a switch or monitor the attic temperature on your own.

Safety

One very important aspect to consider when deciding whether an attic fan is right for you is safety—especially in the case of furnaces installed in the attic. An attic fan can make enough of a draft to blow a pilot light out of a furnace. If this happens, the furnace will empty the gas out of the attic.

At first, the fan will ease most of the danger by forcing the gas out, but once it shuts down, it’s a different story. Your attic can fill up with gas and then dive into the rest of your home, posing a danger to you and your family.

Whole-house and attic fans are also capable of pulling carbon monoxide back to their homes through the damaged flue. Be sure that your flues are in good working condition and that your furnace, oven, fireplace and other fuel-efficient appliances are properly ventilated.

Venting Requirements

For a few reasons, it is important to understand the venting requirements for the solar attic fans you choose. If you choose a solar fan that requires more ventilation than your attic can offer, it will begin to pull the air out of the air-conditioned space.

This negates any energy efficiency you’ve been hoping for. Too much ventilation, and you might find that the fan doesn’t work efficiently to remove the hot air from the entire attic.

If your entire house fan doesn’t have the proper ventilation, it won’t work very well either. It will fill the attic with hot air, which will stop it from drawing more air into space through the walls.

Adjustable Thermostat

As described above, adjustable thermostats give you the ability to simply set a dial and forget about the fan. When the temperature inside the attic reaches the set point, the ventilator will turn on and start ventilating the warm air, cooling the attic room.

Likewise, adjustable thermostats shut off the fan when the temperature drops below the set temperature. Not only are they easy to use, but they also help you save money by not running a fan when it doesn’t have to be on.

Air Volumes (CFM) and Square Footage

The higher the CFM (cubic feet per minute), the more airflow a fan can produce. Choose a fan that fits the size of your home or attic for maximum efficiency.

Too big a CFM, and you’re going to waste more money running a fan than you should. Too low a CFM and you’re just spinning your wheels, with no positive effect on your home. Not all solar attic fans will come with CFM scores emblazoned on the kit.

Instead, you need to search for the sum of square footage that the fan was made for. This detail is particularly essential in the choice of an entire-house fan.

Noise Levels

Oh, the noise: the bane of all the entire-house fan owners since the dawn of the whole-house fans. But it’s no longer. Newer, smaller and more compact models will operate on much quieter speeds, keeping the house cool in relative silence.

If you have an older fan mounted in your home, converting to a newer full house fan can make a significant noise change. The newer models have smaller fans, produce less noise, and their engines are better tuned than the big home fans of the old ones.

Key Features of a Solar Attic Fan

Adjustable bracket for solar panels

The adjustable solar panel ensures that you can adjust its angle of inclination for maximum exposure to UV rays and sunlight.

Durability

As the solar panel will be installed on the roof, it will be exposed to extreme weather conditions, including UV radiation, rain, thunderstorm, strong winds, snow, hailstones and hurricanes. Ensure that you use high durability, impact-resistant, waterproof and corrosion-resistant construction materials.

Availability of solar attic parts

When you buy any equipment, we hope it will serve us for many years without being damaged. Unfortunately, this is not always the case. However, if parts of the solar attic fan get damaged, you want to be able to easily find the replacement parts. Check the manufacturer’s website to make sure that they also sell spare parts.

Alternatively, go to a solar attic fan with a warranty that covers repairs and replacements.

Versatility

Solar attic fans should fit well into different roofing systems. Some solar attic fans are designed for use in a wide range of spaces, including boats, garages, sheds, outdoor and greenhouses.

Quick, easy to install

Go for a solar fan that can be installed in a few steps without the need for major changes in the structure of your home or electrical wiring.

High-performance fan blade

The ideal solar attic makes efficient use of solar energy for optimum functionality. The more fan blades, the more powerful the attic of the solar fan. Besides, if your attic is big, go for a high CFM fan.

Warranty

A comprehensive warranty that provides coverage for a longer period of time is a sign that the attic is reliable and durable.

Top 10 Best Solar Attic Fans in 2021

1. Natural Light 36-Watt Solar Attic Fan

Natural Light 36W Solar Attic Fan is one of our best solar attic fans. It’s so easy to mount on various styles of roofs, including fibreglass, shingle or asphalt. In addition, it is ideal for attic ventilation, one of the tremendous advantages not to be overlooked.

Natural Light is a growing solar fans brand that is being tested and tested by builders. They are designed with the highest standard in the USA.

As said, there’s a 36W solar panel that’s just enough to power the fan. It has a powerful DC motor that can operate efficiently so that the fan can shift the humidity and hot air out of your room every day during sunshine hours.

We also found that its solar panel is adjustable up to 45 degrees or flat, depending on the situation. This model can also shift up to 1628 cubic feet per minute due to maximum sun exposure.

We would also like to suggest that you install one attic fan per 2625 square feet of room. If you live in a colder environment, you might want to purchase the optional snap-on thermostat as well.

When it comes to additional satisfaction with your purchase, this product also has a limited warranty of 25 years on each purchase. Choosing a fan with a long warranty like this one is vital to your peace of mind.

We would like to mention that all the hardware you need is included in the package. More so, we found that it provides simple installation because there is no need for wiring to be installed. However, this unit is not for flat roof or sidewall mounting.

But, ultimately, you might want to check if it’s compatible with your roof form. In addition to providing simple installation, it also has a sturdy and durable structure.

2. iLIVING Hybrid Smart Exhaust Solar Attic Fan

iLIVING solar roof fan is a highly regarded product based on the solar powered attic ventilator feedback that you’ll find online.

There is no question that this device offers excellent features that make it a top-performing and reliable attic fan. This model is one of the most reliable because it has solid features and a small size.

It’s easy to install and use, so it’s a good option for homeowners who don’t have a lot of experience installing items like that. The solar attic fan is also an excellent choice for its compact size, which adds to its portability.

This model includes a smart thermostat control panel. Not all items in the same group are subject to thermostat control. You may want to try out this one if you want to buy an attic fan that’s got it.

Another thing that makes it special is its brushless motor, making it more advanced and more efficient. This sort of engine is in the latest models of solar attic fans, and it’s one of the things you may want to look for when you find a roof ventilator.

We also liked the fact that this item has an IP68 ranking, which makes it an ideal choice in the category. It just means that this item is waterproof and heavy-duty. It can cope with the harsh weather conditions.

With this feature, you can be free to worry that it’s reliable for outdoor changes. This product also comes with a 15-year warranty, so you can find more satisfaction with your purchase. In addition, this model will cool down to 2,000 square feet. You can also have an AC non-stop day or night link with an on or off switch, but it is sold separately.

3. Remington 30-Watt Solar Attic Fan

The Remington Solar Attic Fan is another good choice when it comes to reliability. The 30W attic fan is another eco-friendly gadget since it’s solar-powered.

You don’t have to worry about spending more on power, as this item runs through the energy of the sun with the built-in solar panel.

We would like to recommend this not only to those who are environmentally conscious, but also to those who are looking for a better clean energy product. It has a bonus and built-in Thermostat and Humidistat, which is a saving for us.

We also found that it could work with a brushless motor. It performs quieter than other things in the same category may have done. More so, we can claim that, in fact, it’s one of the best rated solar attic fans because of this feature, in addition to its nice design.

Other than that, we would like to note that it has an advanced noise-damping system that makes it quieter than those in the same group.

In addition to its high-quality solar panel, the fan with a 24V DC fan motor can also give us a stylish design. This item also includes a risk-free guarantee.

It’s protected by a 30-day return agreement. There has been news on installation problems on the downside. Overall, this Remington solar attic fan is a good option to get the consistency checked and tested.

4. Amtrak 50-Watt Solar Attic Fan

The Amtrak Solar fan is another top pick for the best solar attic fan due to its durability and efficiency. It provides many features and functions for a high-quality and practical attic fan. You may want to try it out if you want an updated and operating space fan.

It is not as noisy as other products in the same group. If you’re reading a review of the solar powered attic fans, you may also have bumped into reviews saying that this fan is successful in ventilating their houses, RVs or garages.

With good ventilation, they will avoid the build-up of moisture that would otherwise contribute to mold and mildew build-up. We really liked the fact that the fan itself had a powerful and broad enough fan blade.

This 14-inch fan is also an easy-to-open louvre. We would like to add that this product has integrated wires, so there is no problem with its use. It is also equipped with a highly powerful solar panel that can operate or power a low-watt fan, which is only enough to run the fan. It does not include any holes in the roof.

You don’t have to have any licenses or any electrician, either. In addition, you don’t need to get any inspections.

From the manufacturer’s specifications, this solar panel has been able to generate power for over 30 years. You’ll also appreciate that it comes with four pairs of mounting brackets.

For easy installation, it also includes directions to follow as well as 25 feet of wire included, enabling a fast connection. The fan is very thin on the downside. Its wires can also dissuade some people from buying it because they think it’s hard to install because they can find some wireless versions.

But overall, you may want to take a second look at Amtrak Solar Powerful for its revolutionary features and solid performance.

5. Rand Solar Powered Attic Fan

Rand Solar, the 8W roof ventilator is a product of solar energy that you are looking for if you have a smaller space. It works well from the beginning and for a long time because it is made of high quality materials.

This item is often powered on free solar power, so it is necessary for those who want to cool or ventilate space but do not add to their monthly expenses.

This item has a reliable solar panel that keeps the fan spinning. You can reduce your cooling bill substantially by using this kind of product in your attic or roof. This fan can also pay for itself for a very short time, so there’s nothing to lose.

It works effectively but does not rely on fossil fuel to run. It runs on free energy forever, so it doesn’t contribute to the emissions of the atmosphere. If you have more room to cool or ventilate, you will need to add at least one attic fan.

On the other side, you may want to take a look at the larger versions offered by the manufacturer. It’s got 30W or 40W fans.

In addition, we recommend this product to those that have a smaller area because it can only ventilate up to 700 square feet with a capacity of 435 CFM.

This unit is self-contained, too. All you have to do is mount it on the roof, and it works automatically. It’s a lightweight fan, even for a small room. It is also guaranteed with 20-year pieces.

On the other hand, it’s not for wider spaces and it’s less efficient than those in the same group.

Overall, it’s a good option for those who want an effective and reliable attic fan. It can also offer simple installation of the rooftop.

6. ECO-WORTHY 25-Watt Solar Attic Fan

Another best solar attic fan is the ECO-WORTHY Solar Attic Fan. Its reliability is one of the aspects that make it stand out. Even on a low voltage, this item will operate.

With a minimum operating voltage of 4V, even on a gloomy day, you will be able to get ventilation. It doesn’t consume much electricity, so it’s still ready to operate even with a low voltage supply.

In addition, it has the power you’re going to like. It might cover an area of up to 60 square feet so it could be for you if you have a medium-sized attic or workshop. You may also use it in a recreation vehicle or a mobile home.

More so, this item has a high performance engine. It works well, without making a lot of noise to the others in the same category. It can also protect against moisture, which otherwise leads to mold and mildew growth.

It also has a high-quality construction that can cope with changing weather conditions. You can be sure of long-term usage when selecting this fan. This 25W attic fan will cool your roof and reduce your AC conditioning load.

In the end, you’re going to be able to slash your cooling costs with this item that will keep your attic ventilated. This fan is also simple to mount, making it ready to use for any location like your RV, shed, home or outdoor.

In addition, this model is equipped with an integrated cable with a fast connector. Thanks to its simple connecting wires, you can mount it easily. This fan is easy to install anywhere in your attic and gable vent.

On the other hand, it is less effective to cover a smaller room, though. But overall, it’s got the efficiency features you’re going to enjoy and can last a long time because of its premium quality materials.

7. ECO-WORTHY Solar Attic Fan

This next best solar attic fan is made of premium materials, making it more durable than other items in the same category.

If you’re trying to save on cooling costs, you can take a look at this ventilator, since it can suck hot air and moisture out of space. With this in mind, you can also have the peace of mind that your attic is going to stay cool.

When this happens, the AC doesn’t have to be strained to function to hold the temperature down. We would also like to note that this attic fan might give us a full automatic service. It is one of the features that add to the ease of using this product.

Choosing it, you won’t have to think about switching it on and off manually. In addition, we’re buying a fan because we’re trying to prevent the heat from building up in a spot. It’s one of the things that this item will offer us.

It may prevent the build-up of heat, which would otherwise contribute to the growth of mold and mildew. You can also be sure to keep your family safe by using this ventilating fan.

On the downside, it could be a little noisy while running, according to some accounts, but those were isolated instances. You may want to take a look at it if you’re looking for a high-performance ventilator.

8. GBGS Solar Attic Fan Surface

The GBGS Solar Powered Attic Fan is an outstanding system that will blast your sweat through its natural strength because it works with clean and sustainable solar energy.

The driving force of this best solar attic fan is derived entirely from the sunlight. So you and your family can enjoy luxury without violating your budget plan.

Apart from not using electricity, you can also reduce the cost of energy consumption from other appliances such as air-con or electric fan as it is mounted in your house.

Thanks to its versatile solar panel, it can be adjusted in various positions so that it can collect ample sun rays and store electricity.

It can be shifted horizontally at 90 degrees or vertically at four angles of 0, 15 and 30 to 45 degrees. We liked the most that it has a smooth-air deflector that could be located on the shroud of its fan. As a consequence, it can actually be an efficient heat exhaust system.

In addition, the deflector facilitates a fresher and more continuous circulation of air. It performs peacefully as it is equipped with a whisper-quiet 24-volt engine. Moreover, its reliability is based on the main features of this piece. Its brushless motor is built as an IP68 waterproof, so rainfall doesn’t matter.

Its entire body is also made of galvanized steel to ensure that it is powerful and ready for climate pressure. It also has a 10-year warranty on its engine and a further 20-year warranty on its solar panel.

This just proves that GBGS values its corporate relationship with its ardent clients. However, you need to be aware of where to mount this item for the best performance.

It is only suitable for installation on standard sloped, flat concrete and wood shaking roofs. To top it all, the best features of GBGS Solar Attic Fan include cost-saving capacity, a versatile solar panel, a smooth-air deflector, a resilient structure and a benevolent customer warranty kit.

9. Broan-NuTone 345SOWW Surface Mount Solar Powered Attic Fan

The Broan-Nutone Solar Powered Attic Ventilator is equipped with an integrated 28W solar panel. It is highly effective in receiving sunlight and producing electricity.

This ensures that consumers do not have to get costly to enjoy long-term comfort in their homes.

Furthermore, this item encourages adequate ventilation at home, which is beneficial both to the human respiratory system and to the maintenance of a calm mind. One Broan-Nutone Solar Powered Attic can be as large as 537 CFM.

If you look at the product design, just note that the single aluminum blade fan is intentionally made longer. This way, the cooler air circulation can be extended to your favorite space at home. It’s not surprising at all that this attic ventilator is very powerful.

Broan-Nutone is known for its high-quality and tough pieces. This one is made of UV-stabilized ABS Plastic, stainless steel fasteners, galvanized steel brackets and tempered glass solar panels.

Apart from that, the aluminum screen of this item’s solar panel automatically drives away living things that may disrupt its activity, such as insects, birds and bats. The solar panel is made of quality materials so it will be ready for any outdoor weather disturbance.

This product has silent features of the Attic Ventilator are important because we don’t want to disturb the sound at the roof of our home, particularly during bedtime. Another asset of this item is its simple installation phase.

Everything that needs to be done is to set up this attic ventilator on a roof with compact and positive stops so that it can be attached to its position. One drawback is that the vendor suggested that it could only be used on a shingle roof.

10. Amtrak Solar’s Powerful 70-Watt Solar Attic Fan

Amtrak 70W Solar Attic Fan is one of the most impressive solar powered attic fans. It is made with high quality materials and a robust engine.

We liked this fan because the 70-watt fan is a strong fan that can cool a wide space efficiently. That said, you could have it built in a larger attic, garage or mobile home.

One of the things we enjoyed about this is that it can avoid the build-up of moisture. With that in mind, you can be assured that you can also prevent the growth and production of mold and mildew, which may otherwise lead to allergies and asthma for sensitive loved ones.

Also, using a ventilator fan is energy efficient because it will prevent your AC from working too hard and wasting a lot of electricity.

Speaking of saving money, this item is also free to use forever because it is solar-powered. This product is also really simple to use. You don’t even have to cut holes in the roof. It also comes with brackets and additional wire for installation.

It is also flexible for use in shed, greenhouse, home and RV, to name a few. On the negative side, the Amtrak 70W Solar Attic Fan is a little pricey but it may be more valuable than the others in the category. But if you’d consider the qualities, you’d be able to see it’s worth buying. Check it out for yourself.

Conclusion

As seen above, buying the right solar attic fan will help you save cost and reduce the moisture in your attic.

It will also help with airflow, which will keep your attic nice and cool during the hottest days. Using the best solar attic fan, you can save on cooling costs because your AC does not have to be strained to maintain optimum temperatures, particularly in the summer.

You may also rest assured that hot air is coming out of your home or garage. You can also avoid the development of mold and mildew that may cause allergies and illness to sensitive loved ones.

You can also keep your family safe and happy, particularly in the summer months. In addition, it is strong enough to cover a wide area, depending on the model you ended up purchasing. It is also made of quality and durable materials and has a sleek and beautiful style.

However, you’re going to get a lot of advantages in selecting the right ventilator fan, so you may want to spend effort and time comparing the top picks in the category.

We hope that a thorough guide and specific details on solar attic fans will give you some more insight into why you should buy a solar attic fan for your home and what some of the best options could be.

Irrespective of which fan you buy, you can be assured that all of the above options are made of durable quality materials and come with a sleek design.

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