Stay cool and comfortable with the Ecotronic 3500 CFM Evaporative Air Cooler, a powerful and energy-efficient cooling solution designed for large indoor and semi-outdoor spaces. This portable swamp cooler combines fan, air cooler, and humidifier functions to deliver refreshing airflow while improving air moisture levels for a more comfortable environment. With a strong 3500 CFM airflow output, this evaporative air cooler efficiently circulates cool air in areas up to 400 square feet, making it ideal for garages, workshops, patios, gyms, offices, and living rooms. The built-in 60° automatic oscillation and adjustable vertical louvers help distribute airflow evenly throughout the room for consistent cooling performance. The cooler features a large water tank designed for extended operation, allowing hours of cooling without frequent refilling. For added convenience, the unit offers two water filling options—you can easily refill from the top or connect a standard garden hose for continuous water supply. The included 6 ice packs can be added to enhance the cooling effect during hotter days. With 3 adjustable fan speeds and 2 wind modes, you can customize airflow to match your comfort preferences. Normal mode provides steady cooling, while Natural mode varies airflow intensity to simulate a natural breeze. Designed for convenience and mobility, this portable evaporative cooler includes four smooth-rolling 360° caster wheels, making it easy to move between different areas such as garages, patios, or workspaces. The lightweight design and built-in handle provide flexible placement wherever cooling is needed. Whether you're looking to cool a garage, patio, office, warehouse, or workshop, the Ecotronic evaporative air cooler offers powerful airflow, efficient cooling performance, and convenient portability for everyday use.