Unisex One Size Compact Personal Evaporative Air Cooler and Humidifier with Removable Reservoir Kalsten
Compact Personal Evaporative Air Cooler & Humidifier by Kalsten
Stay comfortable at your desk, nightstand, or in small rooms with the compact personal evaporative air cooler and humidifier from Kalsten. Designed for efficient, portable cooling, this unit combines evaporative cooling technology with an integrated humidifier function to deliver cooler, fresher air where you need it most. Its transparent, removable reservoir and intuitive controls make refills and operation quick and easy. Ideal as a USB-powered alternative to a mini air conditioner for home, offices, dorms, and studios.
- Portable, space-saving design: Small footprint and lightweight construction make it easy to place on desks, nightstands, or countertops for targeted personal cooling.
- Evaporative cooling and humidification: Simple, water-based cooling system lowers perceived temperature and adds moisture to dry indoor air – without refrigerants.
- Transparent, removable water tank: Large, easily removable tank with visible water level allows for convenient refilling and cleaning without spills.
- Adjustable airflow: Front louvers tilt to direct airflow where you want it for concentrated comfort at your workspace or nightstand.
- Intuitive one-button control: Easily accessible buttons provide simple operation to quickly switch modes and adjust airflow.
- Quiet operation: Quiet fan design keeps noise levels low for uninterrupted sleep, study, or work environments.
- USB-powered for convenience: Runs via USB port, power bank, or adapter for flexible placement and low energy consumption – perfect for modern, energy-conscious living.
- Washable/replacable filter support: Designed to accept a filter that captures dust and improves air quality; filter maintenance is straightforward for long-term performance.
- Safe and environmentally friendly: No chemicals or compressors – an energy-efficient, eco-friendly alternative to traditional portable air conditioners.
Who should buy
This Kalsten device is perfect for people seeking an affordable, portable cooling solution for personal spaces – students in dorms, office workers who sleep in warm climates, or anyone wanting spot cooling without the complexity or energy costs of full-sized air conditioners.
Care and maintenance
- Regularly refill the reservoir with clean water and clean it to prevent buildup.
- Remove and rinse the washable filter regularly to maintain airflow and performance.
- Use USB power sources designed for the device, and unplug when not in use.
Optimize your personal comfort with the compact evaporative air cooler and humidifier from Kalsten – a practical, portable solution for targeted cooling and enhanced indoor comfort.
Free standard shipping on all orders. No minimum purchase.
- Ships to: United States
- Processing: 1–4 business days (Mon–Fri)
- Transit: 5–10 business days
- Total delivery time: 6–14 business days
- Order cut-off: 5:00 PM PST
You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.
See our full Shipping Policy.
You have 14 days from delivery to request a return.
- Email support@open.shop with your order number to start a return.
- Items must be unused, complete, and in their original packaging.
- Return label: flat $9.99 USD, deducted from your refund — nothing to pay upfront.
- Damaged, defective or incorrect items: we cover all return and replacement costs.
- No restocking fees.
- Exchanges: contact us and mention "exchange" — the new item ships once your return arrives.
- Refunds are issued within 7 business days of inspection.
See our full Return Policy.
Questions about your order or our products? We're happy to help.
Open
Hooizolder 214
Drachten Friesland 9205CD
Netherlands
Email: support@open.shop
Customer Service:
Monday to Friday, 8:00 AM – 6:00 PM PST (excluding public holidays)
We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.
For quick answers, visit our FAQ page or use our Contact Form.