Solar-Powered Attic Fans New ClimaSense™ Series

Why Choose Solar Star

Our attic fans combine advanced motor technologies with progressive designs and are powered by a huge 33-watt solar panel with ClimaSense™ technology. This superior system delivers exceptional power, efficiently venting hot air and moisture to keep your attic cool and dry, day and night.

 

It enhances home comfort, prolongs the life of your roof and air conditioner, and reduces energy bills with whisper-quiet operation – making it an unbeatable investment in your home’s efficiency and comfort.

Availability: In Stock

Certified Solar Contractor #CVC57042

Certified Roofing Contractor #CCC1330841

Certified Building Contractor #CBC1260615

Installed Price:

Starting at $xx.00

Product Specifications

Specification Detail
Solar Panel – RM 2400
35 Watts
Solar Panel – RM 1500
16 Watts
Solar Panel – IM 1500
16 Watts
Run-at-Night
Up to 4 hours after sunset
Screen Material
5 polymeric blades
Housing Material
UV-stabilized ABS
Controller Mode 1
Continuous – all day + 4 hrs into night
Controller Mode 2
Intelligent – auto-adjusts to humidity & temperature
Mount Types
Roof Mount (RM), Interior Mount (IM)

Why Buy Installed Through The Solar Guys?

Reduce Attic Heat

Solar Star attic fans help remove trapped hot air before it can transfer into living spaces. Reducing attic temperatures can make the temperature in living spaces feel more consistent, and reduce HVAC strain.

Limit Moisture Damage

Attics in Florida are exposed to both indoor moisture and high outdoor humidity. Active ventilation helps lower the risk of mold growth, insulation damage, and wood rot by maintaining airflow and limiting condensation.

Optional House Power for Evening Ventilation

ClimaSense models run on solar power during the day, and can switch to house power after dusk for up to four hours of additional ventilation. This helps the attic shed residual heat and moisture even after sunset.

Ultra-Powerful, Near-Silent Motor Performance

Our strongest motor yet powerful airflow with near-silent operation you won't notice.

Power-Free Operation

An advanced 16- or 35-watt photovoltaic solar panel powers the fan during daylight hours. This allows the system to operate without adding load to your home’s electrical system.

Built to Last

Each unit is constructed with corrosion-resistant materials and equipped with a brushless DC motor that provides quiet, efficient airflow with minimal vibration or wear.

ClimaSense™ Models

Gain unprecedented control over attic climates, eliminating unwanted humidity and temperature without lifting a finger. Simply set your temperature and humidity thresholds and ClimaSense Solar Fans will automatically vent your spaces all day and up to 4 hours after the sun goes down.

ClimaSense RM 2400 Inset 1 1

ClimaSense RM 2400

The Roof Mounted (RM) 2400 is a powerhouse in attic ventilation. With its industry-leading 35-watt solar panel, this beast ensures relentless power generation to maintain your attic’s cool comfort, even after the sun goes down.

ClimaSense RM 1500 Inset

ClimaSense™ RM 1500

With it’s 16-watt solar panel, the Roof Mounted (RM) 1500 is the superior ventilation solution for compact attics or sheds. Enjoy continuous humidity-busting airflow all day and into the night.

ClimaSense IM1500 Inset

ClimaSense™ IM 1500

Designed to be Interior Mounted (IM), the IM 1500 converts passive gable, dormer, powered, and whirlybird vents into an active, solar-powered venting system all day and into the night.

Core Models

Tried-and-true attic fans that combine advanced motor technologies with progressive designs, delivering exceptional power and performance. The result is a ventilation system that efficiently vents hot air and moisture from your attic so it stays cool and dry.

Core RM 2400

RM 2400

At an industry-leading 35-watts, the Roof Mounted (RM) 2400 can handle maximum wattage from the solar panel, converting that power into high fan speeds, while running with ultra-low vibration and sound.

Core RM 1500

RM 1500

The Roof Mounted (RM) 1500 is intentionally designed for spaces you may not need as much power. With a 16-watt solar panel, it creates just the right amount of airflow for efficient venting of heat and moisture.

Screenshot 2026 06 01 at 2.15.03 PM

IM 1500

Designed to be Interior Mounted (IM), this 16-watt solar panel packs a punch and effectively vents small spaces. The solar panel sits discreetly on your roof to maintain your home’s curb appeal.

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Frequently Asked Questions

The Solar Star® Attic Fan features a brushless DC motor that reduces noise and lightweight, polymeric fan blades that minimize vibration. The result is whisper-quiet operation.

The Solar Star® Attic Fan is designed to work in the harshest of climates, from the scorching southwestern regions of Arizona and Texas to the frigid northern areas of Canada and Alaska. Featuring a Venturi design for maximum airflow capacity and durable polymeric fan blades for high performance and reliability, the Solar Star Attic Fan equalizes interior and exterior temperatures to safeguard your home against the extremes of summer and winter.

There are no batteries on Solar Star® Attic Fans that will store energy. Thus, they only run when daylight is available on the solar panel.

Attics are meant to be ventilated year-round, and the Solar Star® Attic Fan is designed to run whenever daylight strikes the solar panel. During the winter, proper ventilation helps prevent condensation from forming within the attic. If moisture does accumulate, it could cause significant heat loss from the home if the attic insulation gets wet. A cool, dry attic is the best solution for keeping heat inside during the winter. If your attic is properly insulated and moisture buildup is not a concern, but cold temperatures are, then the optional Solar Star Thermal Switch may be the solution for you.

While the Solar Star Attic Fan does not have an on/off switch, the optional Solar Star Thermal Switch can be added to turn off the fan when the temperature in the attic is cooler than 65° F (18° C). It will also turn on the fan when the temperature in the attic is warmer than 85° F (29° C), giving you greater control over the operation of your Solar Star Attic Fan.

The Solar Star® Attic Fan runs best when the solar panel is in direct sunlight. Although the unit will continue to operate in the shade (provided the sky is bright), it will run at a reduced speed. On a roof that is heavily shaded for most of the day, a Solar Star Roof Mount 1200 Add-on Panel is recommended. The extra panel can be placed up to 15 ft (4.5 m) away from the main roof unit—if possible, in an area that has all-day sun exposure—to boost performance.

Visit the Solar Star section of our website for more information about Solar Star products.

The 30% federal tax credit expired as of 12/31/25.

Yes. Solar attic fans can help prolong the lifespan of your HVAC system by exhausting trapped, hot air in the attic which lowers the workload on your equipment.

A solar attic fan works best when paired with proper insulation, and when installed correctly as part of a complete attic ventilation strategy, it can reduce thermal strain on your HVAC system and support long-term performance and durability.

When it’s hot outside, your attic is even hotter. Temperatures can reach 130 to 160 degrees Fahrenheit, and that extreme heat radiates downward into your living spaces. Additionally, most HVAC systems have ductwork and air handlers installed in the attic. Because of the trapped heat, your HVAC system endures longer run times to cool your living areas. When these components operate in extreme heat, efficiency drops and wear increases. High attic temperatures can strain blower motors, compressors, seals, and duct insulation.

A solar attic fan exhausts superheated air from your attic, helping to lower overall attic temperatures and reduce heat transfer into the home. Lower attic temperatures can also shorten AC run times. When your system does not have to fight excess heat from above, it can reach the thermostat setting more quickly and cycle more normally. Over time, reduced runtime and lower operating stress can contribute to longer equipment life.