ecoCalm 12-inch Solar Exhaust Fan with Battery & Adjustable Thermostat – 680 CFM, 2x 30W Bifacial Panels

Overview

Meet the ecoCalm 12-inch Solar Exhaust Fan, a compact, solar-powered ventilation solution designed to move air in greenhouses, attics, sheds, and garages. It includes a built-in 5000mAh battery that stores daylight energy so you can enjoy air circulation after sunset or on cloudy days. The system intelligently switches between solar power and battery to keep things moving without manual intervention.

Smart, Solar-Powered Comfort

Our smart controller balances temperature and power, so the fan starts when cooling is needed and cycles off when the space feels comfortable. The built-in thermostat helps tailor operation to your preferences, while the battery can keep the fan running for about six hours after a bright day, offering continued ventilation when sun exposure is limited.

• Automatic on/off behavior based on ambient temperature
• Battery backup for nighttime or low-sun periods
• Quiet, steady air movement to improve ventilation

Power and Efficiency

Two bifacial 30W solar panels capture light from both sides, delivering up to 48W of power under ideal conditions and boosting overall efficiency by up to 130% compared with single-face panels. This setup helps the exhaust fan operate reliably while charging the battery when sun shines, and acknowledges that performance can vary with weather.

• Two-panel setup extends sun exposure and charging potential
• 680 CFM of airflow moves air in spaces up to 1600 ft³
• Performance adapts to sunlight; cloudy days may reduce output

Durable, Outdoor-Ready Design

Built for versatile mounting, the fan can install on a wall or window and features IP44-rated blades for splash resistance. A long 14.8-foot cable provides placement flexibility, making it suitable for greenhouses, barns, garden sheds, garages, and more. This design supports a range of environments without compromising reliability.

• IP44 waterproof blades for outdoor-friendly use
• 14.8 ft cable for flexible installation
• Ideal for greenhouse, attic, shed, barn, and garage ventilation

Practical Benefits at a Glance

Designed to reduce heat buildup and improve air movement, this unit offers solar autonomy with a battery boost, so you can experience better air quality and cooler spaces without relying on constant electrical power. It supports day-to-day comfort and potential plant health benefits in enclosed spaces, while presenting realistic expectations about performance under varying weather conditions.