On summer days with the sun beating down it is not uncommon for outdoor structures like greenhouses and chicken coops to get overheated inside. The most practical solution is a greenhouse fan that can circulate the air around, forcing the hot air out and bringing cooler air in from the outside. Since these sorts of structures are often not wired for electricity, one of the best solutions is a solar powered greenhouse fan.
The best solar powered greenhouse fans move enough air around to keep things cool without drawing a lot of power or making a lot of noise. Technology in solar panels has improved enough that gardeners can go green and use solar power to drive the fan and circulate air effectively. Some models even integrate rechargeable batteries so that they can continue to operate at night when the sun is down or if it hides behind the clouds. These greenhouse fans are all surprisingly light and easy to install, with no electrical or wiring experience needed to safely start ventilating and cooling your greenhouse.
Best Solar Power Greenhouse Fans
The best solar powered greenhouse fan is the Coolerguys 10W Solar-powered fan kit. It has two fans for maximum airflow and a smart design that makes mounting it easy. The ball-bearings of the fan have a lifespan of up to 67,000 hours while the fan itself is durable and rated IP67 waterproof so that a little water won’t ruin it. Putting out an air flow of up to 138 cubic feet per minute, the fan circulates air well while only producing minimal noise of up to 34 dB.
- HIGHER AIRFLOW & LOWER NOISE: The updated blade...
- ENVIRONMENTAL RESISTANCE: IP67 design technology...
- LONG LASTING: Dual ball bearings give a long...
- BARREL CONNECTOR: The solar panel has a barrel...
- RECOMMENDED MAX GREENHOUSE SPACE: 414 cubic feet...
Last update on 2025-03-28 / Affiliate links / Images from Amazon Product Advertising API
Runner Up: Best Solar Power Greenhouse Fans
The Runner Up on this list is the Cowin Solar Fan System. This system is noteworthy for its ability to store power and operate for several hours on a charge. Given its portable nature, this fan is also versatile and useful in various applications. With its medium-sized blades, the fan ventilates and cools the greenhouse in a short period of time.
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
Budget Choice: Solar Power Greenhouse Fans
The Seddex 5W, 4-inch fan is our budget choice due to its ability to ventilate small greenhouses in an eco-friendly manner. Given the fan and the solar panel’s price, it is a great buy despite the smaller size and basic functionality that it offers. Provided that one is in an area with good sunlight, this small fan can work wonders.
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
Solar Power Greenhouse Fans Buyer’s Guide
The technology behind solar powered greenhouse fans is improving quickly and they are now a feasible solution for any number of greenhouse, attic, dog house, or RV installations. These fans draw such low voltage that they can spin at high speeds even when the sun is not shining bright. They are the most inexpensive way to cool areas down inside and outdoors, similar to how you would use a greenhouse heater in the winter. When shopping for a solar powered greenhouse fan there are a few things to consider.
Fan Size
The primary determinant in how much air circulates is going to be the size of the fan blades and how fast they spin. A bigger blade will move more air and that can improve plant yield, but it is a trade off because it will also require more power to spin it. Most fans for small greenhouses range in size from 4 inch blades to 12 inch blades.
Power and Battery Life
All of the fans use an external solar power panel to generate electricity. Most of the fans push that electricity directly to the fan blades to make them spin but others use the energy to charge an integrated battery and that then powers the fan. Having an integrated battery will raise the price of the fan, but it also improves its capabilities and lets it run effectively at night. The amount of power generated is determined by the solar panels and they will have different capabilities and efficiency ratings depending on their size and design. 
Mounting Options
Determining where to install your fan is often driven by several factors including exposure to the elements, available power, and safety. Considering where you want to install a fan before buying one is important to avoid trouble down the road. Many of the newer solar powered fans are light duty enough that they can be mounted and installed with simple zip ties.
Taking some time to consider how and where you will use your solar powered greenhouse fan can save you money and hassle. After imagining what will work best for you, take a look at the fans reviewed below to find one that is a good fit. Each of the fans on this list can get the job done and has something special to offer when it comes to installation, power, or battery life.
Solar Power Greenhouse Fans Reviews
We have chosen the six best solar power greenhouse fans for you to consider. In these reviews we look at the key points and the details of each model so that you can compare them and decide which is the best choice for your greenhouse.
GOODSOZ 10W Solar Panel Fan
Key Points at a Glance
- Easy to use portable fan
- 10W 5V solar panel unit with USB output to charge the fan or any other electronics
- Solar panel and fan are waterproof
- Power cord is 48 inches long
- Amount of sunlight hitting the solar panel is directly proportional to the speed of the fan
- Fan works best if the solar panel is placed perpendicular to the sun
- Ideal for small greenhouses, camping tents, caravan, dog house, and chicken house
Dimensions and Specs
- Fan size- 10” x 9” x 5”
- Solar panel size- 10” x 10′
- Package weight- 2.2 pounds
The Details
The Goodzos greenhouse fan is a small, lightweight, and portable fan meant to ventilate and cool down a small greenhouse or chicken coop. The Solar panel is an efficient 10W 5V unit that can power the fan with ease and keep it spinning even in minimal sun. Being waterproof is a great plus for wet/ rainy areas around your yard. However, one needs to be cautious and ensure the USB port doesn’t get wet.
The speed of the fan peaks only when an ample amount of sunlight is available. The fan provides good utility for other applications as well like for camping, a dog house, RV motor homes, etc. Operating and using the fan and solar panel is pretty straightforward- one just needs to place the panel perpendicularly under sunlight and then connect the fan to it via the USB port.
The solar panel will not power the fan at night, due to the non-availability of sunlight. Another alternative to power it at night would be a rechargeable battery or power bank.
The Bottom Line
For the reasonable price this greenhouse fan and solar panel are being offered, it does a good job of ventilating a small to medium sized greenhouse. For instance, a greenhouse of approximately 4×4 feet could be easily ventilated by the Goodzos fan and solar panel. Farmers appreciate that a few water drips on the panel or splashes on the fan don’t stop it. For gardeners on a limited budget that want a small solar powered greenhouse fan this is a good set to consider.
- Solar Powered Fan Ventilator for Pet house, Chicken house, Tree house,...
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- The 5V solar panel has USB output, which can be connected to the USB...
- The solar panel runs the fan fast under direct sunshine. Fan works...
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
Yingli Solar Table Fan
Key Points at a Glance
- Multi-purpose solar powered fan with 3 speed modes
- Can be charged either through a 15w Solar Panel or by an AC100-240V adapter.
- Offers circuit protection by preventing overcharging
- 1-year seller warranty is included in the package
- 12-inch blades offer higher airflow
- Charging time is 4 to 5 hours
- With a full charge, the fan can run for 12 hours at low speed, 8.5 hours at medium speed, and 4.5 hours at high speed
Dimensions and Specs
- Fan- 18.5 x 15.7 x 5.3 inches
- Product weight – 14.6 pounds
- Solar fan voltage- 12V
- Solar Fan charging power- 45W
- Solar Panel current – 15W/ 18V
- Solar Panel cable length- 6 meters
- Compatible with two batteries- Lead-acid 6V/4.5Ah x 2 units or 11V/4.4Ah x 1 unit Lithium Battery
- Charging current – AC 100-240V, 50/60 Hz. DC 18V
The Details
The Yingli Solar Table Fan is an ideal greenhouse fan for anyone looking to find a fan with a helpful rechargeable battery and a bright light included. The fan is made of ABS Plastic and it has a smart unit that can power integrated LED lights. The smart unit has overcharge protection for safety, and you also get the convenience of using an AC adapter to charge the fan as necessary. The fan has large 12-inch blades that do a great job of circulating air onto plants and around the greenhouse. The package includes one solar fan, one solar panel with 15W/18V capability, and an adapter. Charging the battery lets the fan operate for about 5 hours.
The Bottom Line
This fan is slightly on the expensive side, but it is a solid unit with a good sized fan. As an all encompassing unit with everything you need to not only run the solar fan during the daytime but also to run it at night it has good value. This is a good option to consider if you live in a place where it rains frequently or areas that receive less sunlight. The fan is of good quality and provides a decent value considering all that is included.
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
Seddex 5W 4 inch Solar Fan
Key Points at a Glance
- Extremely compact fan with blades measuring just 4 inches
- Supports 1.25 A of power
- Ideal to ventilate a small greenhouse
- Simple, uncomplicated design
- The fan speed is directly proportional to the amount of sunlight received by the solar panel
Dimensions and Specs
- Solar Panel power- 5W
- Maximum fan power- 1.25 A
- Product dimensions- 4 x 4 x 4 inches
- Product weight – 14.46 ounces
The Details
The Seddex 4 inch solar fan is perfect and cost-friendly for small greenhouses with plants that require a minimum amount of airflow. The fan blades are just 4 inches long and are hence a little more limited at pushing air than some other options on this list. Still, the fan has good basic functionality and does the job it is supposed to.
The amount of sunlight hitting the solar panel determines the power level of the fan – the brighter the light, the faster the fan spins and vice-versa. The included solar panel is waterproof and weatherproof, but caution still needs to be maintained when operating the fan in wet conditions. The shipping package includes one 4 inch fan and one 5W Solar Panel.
The Bottom Line
While the fan is limited in function and provides no battery utility to store the power generated from the solar panel, it does a decent job of circulating air in a small greenhouse. This package also works well in a chicken coop because the fan runs quiet and provides good airflow without making the chickens cold. The design philosophy of the fan is pretty simple and straightforward- it uses power only when needed for the operation. For the price, this is a good deal and it is a model worth considering.
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
Coolerguys 10W Solar Powered Dual Fan Kit
Key Points at a Glance
- Dual Fan blades provide 138 cubic feet of air per minute and can go up to 203 cubic feet per minute
- Silent operation ensures just 34 dB of sound level
- IP67 resistance makes the fan completely dustproof and waterproof
- Solar Panel has an IP55 resistance
- Ball bearings have a long life of up to 67,000 hours
- Fan speed maxes with maximum sunlight of 13 watts
- Two fans provide enough ventilation to a medium-sized Greenhouse
Dimensions and Specs
- Fan speed hovers around 3000 RPM
- Maximum airflow- 203 CFM
- Maximum noise level at full speed- 45 dB
- Rated Voltage: 12v
- Bearing life: 67,000 hrs
- Operating temperature range: -40 C to +70 C
- Energy Draw: 12v/0.72A
- Each Solar Panel size- 11.75″ x 5.5″
- Package weight- 2.22 Pounds
- Suitable Greenhouse area- 414 cubic feet
The Details
This dual fan setup from Coolerguys offers some of the best value for money proposition one can get. It delivers the advantage of two fans in one easy to mount package all for the price of a single unit! The fans are easy to operate and whisper quiet at just 34db.
This set can adequately circulate air in any small to medium-sized Greenhouse. However, no battery is included so the fans need constant power from the solar panel. Thus, they can’t work at night unless a separately charged battery powers them. Good design gives it strong environmental resistance and makes this set dustproof and water resistant (submerged up to 1m for 30 min).
The Bottom Line
This set is considered the best for a couple of reasons. The solar panels work well and provide enough power to operate two fans for the price of one. Families find it is a surprisingly durable unit with material that is waterproof and dustproof. It is also light enough that users can mount it easily with just some zip ties. Under maximum sunlight these dual fans can move a lot of air and provide good air circulation in your greenhouse.
- HIGHER AIRFLOW & LOWER NOISE: The updated blade and motor designs...
- ENVIRONMENTAL RESISTANCE: IP67 design technology allows this to be...
- LONG LASTING: Dual ball bearings give a long projected lifespan of up...
- BARREL CONNECTOR: The solar panel has a barrel female connector and a...
- RECOMMENDED MAX GREENHOUSE SPACE: 414 cubic feet (L X W X H)
Last update on 2025-03-28 / Affiliate links / Images from Amazon Product Advertising API
Cowin Solar Fan System
Key Points at a Glance
- 3 Speed modes on offer
- The integrated battery makes it easy to use when there isn’t sunlight outside
- 15W Solar Panel can be used to charge and power the fan
- Overcharge protection included in the package
- The fan can be used to charge other small electronic devices
- 1-year warranty included in the package
Dimensions and Specs
- Solar panel power: 15W/18V
- 16.4-inch cable solar panel cable length
- Fan power 35W DC12V that powers 16-inch blade
- 1.3W LED lamps on the fan
- Fan power backup: 8 hours at low speed and 4 hours at high speed
- Fan Material: PP
- Fan voltage: AC 220V
- Total charging time: 5 hrs
- Fan speed: 1000 RPM – 1350 RPM
The Details
The Cowin Solar Fan System is best suited for areas with less sunlight or areas that have frequent power cuts. The package includes the fan, solar panel, and a charger to charge the fan in case of the lack of availability of direct sunlight. Most importantly, the fan has a battery integrated into the stand so that it can hold a charge and operate for several hours without sunlight.
The fan’s height can be adjusted, which can help in taller greenhouses and also reduce the labor required for installation. With its portable nature and integrated battery to hold a charge, the fan can be useful for circulating air at various places around a portable greenhouse.
The Bottom Line
The best part of this fan and solar panel combination is that it has an integrated battery. That battery can hold enough power to run the fan for several hours, so the fan still circulates air around the greenhouse at night or on rainy days. One user reported that during a power outage it lasted eight hours on low without oscillating. Gardeners also like that the fan has its own stand and is easy to move around and mount in different places. Also, the medium size fan blades help blow a good amount of air in the greenhouse. If one has the budget, this setup is definitely worth considering.
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
ECO-WORTHY 25W Solar Powered Fan
Key Points at a Glance
- Minimum voltage operation at 4V so low sunlight doesn’t hinder fan operation
- Easily mounts in a shed or as a rooftop fan
- Good fan motor produces little noise and consumes little power
- The Solar Panel is 30W, enough to run the fan at high speeds
Dimensions and Specs
- Maximum solar panel Power at STC: 30W
- Maximum solar panel power voltage: 16V
- Open size: 27.8*13.8*0.7 inches
- Folding size: 13.8*13.8*1.5 inches
- Voltage: 5V up to 36V
- Operating voltage of the kit- 18V
- Wire Length: 16ft/5m
- Life Span of the motor: Greater than 10,000 running hours
The Details
The high-powered Eco-Worthy solar-powered fan is suitable for greenhouses, attics, and garages, with a relatively strong motor that produces enough power to ventilate, dehumidify, and cool a greenhouse in a short time. This is a compact but surprisingly powerful fan, and is an ideal choice for applications requiring rapid air flow.
The package includes a 12 5/8 inch DC Solar Fan, a 30W Folding solar panel, a 16ft solar cable, and mounting brackets for the solar panel. This fan cannot run at night as it is completely solar dependent.
The Bottom Line
Considering the features and power output, this solar powered greenhouse fan delivers excellent value and is a sturdy, durable option for long term installations. It is highly suitable for anyone wanting an eco-friendly option to ventilate their greenhouse. Purchasers appreciate that it is exceptionally durable and sets up easy. All in all, this is a decent and powerful fan packaged in a relatively small size.
- [Airy and Cool]: high power solar panel with high air volume fan for...
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- [Note]: The speed of the fan is greatly affected by sunlight. There is...
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
Conclusion
The best solar powered greenhouse fans quietly provide good air circulation and consistent performance without drawing a lot of power. Fans need not be oversized or overpowered to get the job done in a small greenhouse or chicken coop, and the focus instead can be on fans that are quiet and relatively resistant to dust and water. Each of the solar powered greenhouse fans in this review can get the job done, but read the features of each carefully to find the one that is the best application for your unique situation.
Last update on 2025-03-26 / Affiliate links / Images from Amazon Product Advertising API
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