Best Solar Attic Fan Reviews & Buying Guide in 2020


Best Solar Attic Fan

When you are planning to ventilate your attic, there are a lot of factors to consider. One of them is the amount of air circulation that you wish inside your home, the safety, and the type of fan to install.

Among many options, solar attic fans can be a suitable solution. Especially for homeowners who want to cool their attic at once reduce energy usage. In fact it is now become the first choice in Canada. Even though they might cost more to install at the beginning, but it worth for the long term plan.

Fortunately, there are solar-powered attic fans that are more cost-effective and low maintenance than the regular kinds of fans. Therefore we will guide you on how to choose the best solar powered attic fans and provide you the reviews of the top selected product in the market.

Top 5 Best Powered Solar Attic Fan Reviews

Solar attic fans vary in quality, features, and price. We have picked up the 5 recommended products today according to buying criteria that we will list on the below article.

Here is a table comparison that shows the primary difference between each product. Below, you will also find a detailed review of each solar ventilator.

Product NameWattsSquare FeetFeatures
Natural Light Solar Attic Fan362,625Provision for tile roof installation, fire safety switch, and thermostat, Large area coverage, Adjustable solar panels, 25-year warranty
HQST Solar Powered Roof Mount Adjustable Attic Fan302,625Rust-resistant aluminum material, Adjustable, detachable solar panels
Amtrak Solar’s Powerful Attic Fan402,250Galvanized steel and crystalline solar panels, Operates with minimal noise, Easy to install with pre-drilled holes and brackets, Multi-functional, affordable with 25 years of warranty
ECO-WORTHY Solar Powered Attic Ventilator302,200Low voltage, energy-efficient, Stainless steel and aluminum alloy construction, Semi-foldable solar panels, Can work even under the cloudy days
Ran Solar Powered Attic Fan-88700Cost-effective for small attic spaces, Functions underlow light conditions, Portable and lightweight

1. Natural Light Solar Attic Fan

Natural Light Solar Attic FanNatural Light is one of the leading manufacturers of solar fans in the US. Built with the highest quality, the Natural Light Solar Attic Fan gets first in our list. Its solar panels and fan motors are powered by the 36-watt DC motor to move warm air and moisture out of the attic every day.

Although it is not intended for flat roofs or side-wall installation, each solar panel is adjustable up to 45-degree angle. As an attic ventilator, it has coverage of up to 2,625-square foot attic space. It rotates up to 1,628-cubic feet per minute under the full blasting heat of the sun.

You can feel the significant cooling effect in the rooms because of its effective cooling mechanism. The installation of this fan is easy and convenient. It can be easily mounted on pitched fiberglass asphalt shingle roofs. It also has an installation option for tile roofs by purchasing an additional tile roof flashing kits.

For optimal safety, you can attach thermostats and fire safety switches which are sold separately. Although this 36-watt solar attic ventilator is quite expensive, it comes with 25 years warranty. All the necessary installation hardware and tools are included in the package. It is considered one of the solar fans with the highest quality in the market.

  • Ventilates large area equivalent to bedrooms upstairs
  • Powerful 36-watt DC motor
  • Shingle roof installation and provision for optional tile roof mounting
  • Comes with 25 years warranty and hardware for installation
  • Adjustable solar panels
  • Provision for fire safety switches and thermostats
  • More expensive than other attic fans in the list
  • Fire safety accessories are sold separately

2. HQST Solar Powered Roof Mount Adjustable Attic Fan

HQST Solar Powered Roof Mount Adjustable Attic FanIf you are looking for an solar attic fan with the same coverage as the Natural Light fan, the HQST Solar Powered Attic Fan can be a cheaper alternative.

It is an all-in-one solar unit intended to reduce attic temperature and moisture to prevent attic damage. The 30-watt solar motor functions to sustain robust wind blow for optimal warm and cold air exchange.

The solar panels are adjustable up to 45 degrees. It can even be disconnected from the unit and mount it where there is maximum sun exposure. Made with heavy-duty rust-resistant aluminum, it lasts for many years without requiring maintenance. It comes with a provision for an optional snap-op thermostat for colder climates.

The HQST Solar Powered Attic Fan comes with an optional one-time installation with a minimal additional fee. It can be conveniently mounted on a pitched fiberglass asphalt single roofs. It automatically starts functioning under the sun so exercise caution during the installation period. Once installed, it is efficient and saves operating costs.

Moreover, the package comes with one HQST fan blade, one HQST 30-watt solar panel, and a one-year warranty to guarantee your purchase. The fan blades measure 14 inches, and the overall size of the fan is 20.9 by 20.9 by 9.8 inches.

  • Broad coverage of up to 2,625-square feet
  • A cheaper alternative to the Natural Light
  • Adjustable and detachable solar panels
  • Durable construction made of corrosion-resistant aluminum
  • Easy to install on single asphalt roofs; optional one-time installation service
  • Maintains a sharp wind blow and prevents attic moisture
  • Comes with a one-year warranty only
  • Doesn’t comes with an optional thermostat

3. Amtrak Solar’s Powerful Attic Fan with Thermostat

Amtrak Solar’s Powerful Attic FanBudget-conscious homeowners can consider the Amtrak Solar’s Powerful Attic Fan without compromising for quality and practicality. This solar powered attic fan is made with high-quality materials such as galvanized steel and 14-inch fan blades.

The fan motor is thermally protected to ensure optimal efficiency and long-lasting quality. It can ventilate up to 2,250-square foot attics and even garage, greenhouse, and gable vents.

The fan blades are more significant than the older model of Amtrak fan. They are guaranteed high-quality because they are made by Revcor, a number one fan blade manufacturer in the US.

These fan blades are powered by a 40-watt solar motor and have 12-volt compatibility with the premium crystalline solar panel. The fan quietly operates to ensure comfortable living space.

Another unique thing about the Amtrak Solar’s Powerful Attic Fan is its easy installation. The unit comes with a set of pre-drilled holes, Z-brackets, and wires for do-it-yourself installation.

It can be installed behind the gable vent where the temperature increases up to 160 degrees. Aside from the tools for assembly, it also comes with a 25-year warranty. For a very affordable price, this solar attic ventilator is worth it.

  • Large fan blades that operate at minimal noise
  • Powered by a 40-watt motor
  • Made with durable materials such as galvanized steel and crystalline solar panel
  • Easy to install with pre-drilled holes and brackets
  • Multi-functional for attic, greenhouse, garage, and gable vents use
  • Affordable with 25 years of warranty
  • Comes with free thermostat
  • Solar panels are not adjustable
  • Smaller ventilation coverage than the other units
  • The unit looks thin and flimsy

4. ECO-WORTHY Solar Powered Attic Ventilator

ECO-WORTHY Solar Powered Attic VentilatorAnother budget-friendly solar attic fan comes from ECO-WORTHY. Although it is as inexpensive as the Amtrak’s, it has notable features as well. The 30-watt powered brush-less motor efficiently ventilates attics and garages. It helps reduce air-conditioning system loads and cuts operating costs.

The 12-volt solar panel is made with a 3.2-mm low-iron, transparent tempered glass. It is semi-foldable up to 350 x 350 x 38 mm and opens at 707 x 350 x 18 mm.

The fan blades are made with aluminum alloy while the coverings are made with strong 304-stainless steel. Overall, the unit comes with complete installation flashing kits that consist of adjustable brackets, one 16-feet solar cable, and pre-installed eight-inch solar cable.

The ventilation coverage of this solar fan is up to 2,200 square feet with 1,960 cubic feet per minute ventilation power. As the fan operates at low voltage (four to 17.2 volts), it can function even during the cloudy days. It has a reliable function and requires little maintenance. The life span of the motor lasts for more than 10,000 hours.

  • Affordable and cuts air conditioning operating costs because of its low voltage use
  • Comes with pre-installed cables and other installation accessories
  • Powered by a 30-watt brushless, efficient motor
  • Heavy-duty construction made with stainless steel and aluminum alloy
  • Semi-foldable solar panels with adjustable brackets
  • Can work even under the cloudy days
  • The solar panels are not fully adjustable
  • Smaller ventilation coverage than the other units
  • Doesn’t come with installation manual but it is easy to install so you won’t need it anyway
  • No provision for thermostat

5. Rand Solar Powered Attic Fan-8

Rand Solar Powered Attic Fan-8If all of the above-mentioned solar attic fans are too large and expensive for your attic, then the Rand Solar Powered Attic Fan-8 might easily fit your space and budget. It is an all-new version of Rand solar fans and is designed for small attic spaces. It effectively ventilates attics and significantly cuts your electric bill.

This Rand attic ventilator is powered by an eight-watt motor. The ventilating mechanism has coverage of up to 700 square feet and a capacity of 435 cubic feet per minute. The brushless motor functions even in low light conditions since it requires minimal energy.

The installation is easy. It does not require any wiring, and the package comes with the necessary tools for set-up. Additionally, the Rand Solar Powered Attic Fan-8 weighs 5.55 pounds and measures 19 by 19 by 6 inches. These technical specifications make the unit easy to transport and install.

What homeowners need to understand is that this solar-powered fan is not powerful for full house attic ventilation. For larger spaces, consider installing two to three units or the 30-watt or 40-watt models. As a mini solar attic ventilator, it is best used for small spaces.

  • Cost-effective for small attic spaces
  • Powered by an only eight-watt motor
  • Ventilates up to 700 square feet area
  • Functions even in overcast conditions and cloudy weather
  • Portable, lightweight so it’s easy to install
  • The most affordable the solar panel ventilator in the list
  • Not intended for large spaces
  • Requires more than one unit for bigger attics

How Does a Attic Fan with Solar Power Works?

The general purpose of a ventilation attic fan is to reduce the warm air within the attic through the roof. It helps to spread out the cold, fresh air throughout the house or room. As a result, it ventilates your home as fresh as possible all the time.

Although it doesn’t convert the air into as cool as the air conditioning does, it is inexpensive and utilizes less power than the AC units. The solar panel fan does the same job, except that it draws energy from the sun. The fan is attached to medium-sized solar panels through the roof vent.

These solar panels are installed on the roof where there is maximum sun exposure during the day. They accumulate the sunlight and transform it into solar power.

The ventilation mechanism of this type of fans can be described in a simple model. It provides a steady air flow throughout the attic space. Therefore, the warm air is expelled outside providing more room for the fresh air from the outside. This is called “air exchange.” As a rule of thumb, the attic should not be warmer than 10 to 25 degrees than the outside temperature.

Although most solar attic fans operate only during the day, there are now few models that are attached to batteries. They charge these batteries during the day so they can run at night. Other models also operate even in low-light conditions such as overcast and cloudy weathers.

The ventilator uses the solar power to circulate the air inside the room or home, eliminating the hot air and bring in fresh air from the outside. As it utilizes a natural source of energy, it does not require an additional power supply from your power service provider. It tends to be more cost-effective than an electric powered attic fan.

Is Solar Powered Attic Fan Worth It?

The quick answer is Yes! The solar attic fan may cost more in advance than the regular attic fan. However, in recent years, the cost can be decreased to 70 percent. Still, at around $300, these solar panels are not cheap. A solar panel model that can ventilate a 3,000-square foot house may cost up to $200.

The solar attic fan has allowed homeowners to decrease their carbon footprint and power consumption. It is eco-friendly too. Compared to electric-powered attic fans, the solar-powered ones don’t emit greenhouse gas which could be harmful to the environment. Studies show that it reduces the attic temperature by up to 30 percent and the AC utility by up to six percent.

Moreover, solar attic fans are easy to install. It typically takes a couple of hours or two to set it up in the attic. It does not have wires related to run the motors. All it takes are necessary handyman skills and tools. The most challenging part is looking for the most suitable place to install the unit.

Ideally, buy a this type of attic fan with a complete installation package. Some come with pre-drilled holes, brackets, and other tools for do-it-yourself installation, while some come with installation service at an additional cost. There are also instructional videos online from DIY channels and manufacturers.

Once installed, it requires minimal to zero maintenance. Seal the attic fan tightly to prevent air and water leaks.

The Verdicts

We have thoroughly reviewed the five solar attic fans in the market today. Each unit comes with pros and cons that may suit various attic requirements and user’s preference.

Among the list, the Natural Light’s generally stands out. Its powerful motor is efficient for ventilating large attic spaces, and it can be installed in different ways. Although it is quite expensive, it is worth the investment. It comes with long years of warranty, so your purchase is secured while cutting your air conditioning costs. author Anastasia Russell
Anastasia is a 26-year-old blogger who always motivated to observe the ways humans interact with technology. She is currently undertaking a master degree program at the Uppsala University specializing in Human-Computer Interaction & Design Program.
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