Flat Roof
Select this for a flat or nearly flat roof finished with a continuous membrane such as EPDM, bitumen, or PVC.
Solar Attic Fan · 4-inch pitched flashing
The Solatube Solar Attic Fan uses sunlight to exhaust hot, moisture-laden air from the attic while properly sized soffit or eave vents supply replacement air.
Choose the 16W RM1500 or 33W RM2400 for the required capacity. Both use a brushless DC motor, non-corrosive five-wing fan blade, and 4-inch pitched flashing designed for compatible sloped-roof installations.
Confirm before ordering: This model includes 4-inch pitched flashing for a compatible sloped roof. It is a different configuration from the no-pitch and dedicated hurricane-rated models. Confirm roof covering, attic size, intake ventilation, solar exposure, local code, and installation requirements.

Vent heat and moisture
Active attic ventilation supports the home by removing accumulated heat during warm weather and moisture that can collect during cooler conditions.
The photovoltaic panel powers the fan during daylight without adding to household electrical use.
Exhausts trapped hot air that can transfer heat into living spaces and increase the cooling load.
Helps move humid attic air outdoors when adequate replacement-air ventilation is available.
A brushless DC motor and lightweight polymeric blade are designed for efficient operation with low vibration.
The photovoltaic panel and UV-stabilized housing are built for continued exterior exposure.
The 4-inch pitched flashing provides an angled mounting profile for a compatible sloped roof. Confirm the roof pitch, covering, and flashing integration with your installer.
Engineered airflow

Balanced attic ventilation
The fan's performance depends on available sunlight, correct placement, unobstructed intake ventilation, attic configuration, and roof pitch. It does not replace the intake vents required by code.

Select fan power above
The product options above determine the included fan and solar-panel power. Attic size alone does not determine the right quantity; roof pitch, climate, solar exposure, and intake ventilation also affect sizing.
| Model | Solar fan wattage | Best starting point | Included flashing |
|---|---|---|---|
| RM1500 | 16W | Smaller attic zones and moderate climates | 4-inch pitched |
| RM2400 | 33W | Larger attic zones, steeper roofs, and hotter climates | 4-inch pitched |
Sizing matters: larger or steeper attic zones may require more than one fan. Confirm the installation against Solatube's sizing guidance, available intake vent area, and applicable code.
Optional controls
The Thermal Switch and ClimaSense™ perform different control functions and must not be installed together. Select one option based on the home's ventilation goals.
Simple temperature control
Allows solar-powered fan operation when the attic is approximately 85°F or warmer and stops operation after the temperature falls below approximately 65°F.
Do not combine with ClimaSense™.
View Thermal Switch
Temperature, humidity, and night operation
Adds temperature and humidity sensing and can continue ventilation for up to four hours after sunset using household power. A constantly powered attic outlet is required.
Do not combine with the Thermal Switch.
View ClimaSense™Roof-mounted system
Thermal Switch, ClimaSense™, and add-on solar panels are optional accessories and are included only when purchased separately or selected with the product.

Plan the roof installation
Locate the fan high on the roof and between rafters so hot attic air can exhaust efficiently. Position the solar panel for strong daylight exposure and follow the installation guide for cutting, flashing, fastening, and sealing.
High-wind regions: use the dedicated 6-inch HVHZ model where that approval is required. The 4-inch pitched model on this page is a different configuration; confirm the approved fan assembly and installation with your installer.

See the system
Review how solar attic ventilation works, then watch the roof-mounted installation process.
Solatube Solar Attic Fan components are covered for 10 years, and ClimaSense™ controller electrical components are covered for 5 years. Review the complete Solatube warranty for terms, exclusions, and claim instructions.
only wish Id gotten one sooner!
Solar fan for my attic. I noticed the fresh air and difference as soon as I turned on the fan. Highly recommended.
I opted for the Solatube Solar Attic Fan after reading about its efficiency, and I'm glad I did. It moves a ton of air and keeps the attic temp down. Highly recommended.
I could tell a difference in the temp of the house w/ the attic fans. Heater worked tirelessly and the products are amazing. I highly recommend it.
We also had two attic solar vent fans and several box vents and we can already tell a difference.
I was very satisfied with the solar attic vents. It works great now I don’t need to lower my thermostat to keep my wife and I cool and comfortable; which saves me money on electricity.
Attic Fan unit, additionally, our old bathroom fan took FOREVER to empty the steam out of the room. The new fan is very efficient and the room is cleared within a minute of turning off the hot water.
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