Desktop Water Cooling Fan
EF1811 Compact Desktop Evaporative Air Cooler
A rechargeable personal air cooler designed for desks, bedside spaces and compact indoor use. EF1811 combines 3-speed airflow, a 470 mL water tank, automatic oscillation and timer control in a portable format for OEM/ODM appliance programs.
Who We Work With as a Trusted Small Appliance Manufacturer
With strong capabilities in product development, PCBA customization, software programming, and mass production, E-come helps customers bring competitive small home appliances to market with consistent quality, flexible customization, and dependable supply.
We support global brand owners, distributors, retailers, importers, and e-commerce businesses with reliable OEM & ODM manufacturing solutions.
- Home Appliance Brands
- Retail Chains
- Importers
- Amazon Sellers
- Internet Celebrity
PRODUCT DETAILS
Cooling comfort in a compact desktop format
EF1811 is positioned as a small portable evaporative air cooler for localized comfort rather than a room air conditioner. The feature set is designed around convenient airflow control, water-assisted cooling and rechargeable use.
Automatic Left-Right Oscillation
Approx. 35° total automatic oscillation helps distribute airflow across a wider personal area while keeping the footprint compact.
Manual Vertical Air Direction
Adjust the louvers up or down by hand to direct airflow toward a desk, bedside position or seated working area.
Rechargeable 4000mAh Battery
A built-in 18650 3.7V 4000mAh battery makes the unit easier to move between workspaces. The battery is specified with PSE certification.
1–7 Hour Timer
The timer increases in one-hour steps from 1H to 7H and loops back through the setting sequence for straightforward daily operation.
Water-Assisted Evaporative Cooling
The 470 mL tank and 55 mL/h humidification output support localized water cooling, improving perceived freshness compared with fan-only airflow in suitable conditions.
3-Speed Touch Control
Low, Medium and High speed settings cover approximately 2.5–3.5 m/s airflow, with motor speed from 1900 to 3150 r/min (±10%).
Dual Protection Design
The battery and circuit board both include over-charge and over-discharge protection for more controlled rechargeable operation.
Portable Personal Cooling
At 1.43 kg, EF1811 fits desk, bedroom and small-space applications where buyers need a compact personal air cooler rather than fixed cooling equipment.
Ready-to-Pack Accessories
Standard accessories include one user manual and one USB charging cable, simplifying retail or distribution program preparation.
Runtime Reference
Battery use by operating mode
All functions operating
1.5H
With oscillation
1.5–4.5H
Without oscillation
2.5–10H
Charging time
Approx. 7H
Cooling System
Small air cooler with water tank
Full water tank capacity
470mL
Marked usable capacity
400mL
Humidification output
55mL/h
Maximum air speed
≥3.5m/s
PATENT PORTFOLIO
Protectable design,
documented clearly.
From concepts and drawings to prototypes and development records, Ecome documents each key R&D stage clearly. NDA protection and structured documentation help safeguard your designs and intellectual property.
PRODUCT CERTIFICATIONS
Compliance information
buyers can verify.
Ecome provides clear and verifiable compliance information for different markets. Depending on the product, certifications may include CE, RoHS, CB, ETL, GS, KC, and PSE, helping buyers confirm regulatory readiness with confidence.
⦁ KC (Korea)
⦁ PSE (Japan)
⦁ CE / CB / GS (Europe)
⦁ ETL (North America)
Products are designed and tested according to target market regulations to ensure compliance from development to delivery.
ABOUT THE MANUFACTURER
Made for long-term B2B cooperation, not one-off transactions.
As a reliable customized air cooler manufacturer, E-come supports customers beyond simple production. Our engineering team responds quickly to technical requirements, develops samples efficiently, and works closely with customers from concept validation to mass production. We also offer flexible small-batch production and rapid response capabilities, helping customers test new products, respond to market changes, and replenish inventory efficiently. Quality is controlled at every stage through incoming material inspection, in-process quality control, functional testing, and final inspection before shipment. In addition, E-come has comprehensive supplier audit and factory inspection capabilities, supporting customers with supplier qualification, factory assessment, production capacity verification, quality system evaluation, and ongoing supplier performance management. We also prepare complete export documents and compliance materials to support smooth international delivery. With responsive engineering, small-order flexibility, professional supplier auditing, disciplined quality management, and dependable execution.
COOPERATION PARTNERS
Trusted relationships,
presented quietly.
Ecome works closely with long-term partners across Europe, North America, Japan, South Korea, and Southeast Asia. Through reliable product development, manufacturing, and delivery, we help customers bring their products to markets around the world.
COOPERATION CASES
Show the buyer problem,
our solution and the result.
Ecome has supported numerous customers in turning product ideas into successful market-ready solutions. From solving technical challenges and developing customized functions to prototyping, testing, and mass production, our team helps customers launch differentiated products with greater speed, reliability, and market competitiveness.
FAQ
Answers procurement teams usually need before sampling.
What is the EF1811 desktop air cooler?
EF1811 is a compact rechargeable evaporative air cooler for localized personal use. It combines fan airflow with a water tank and humidification function, plus automatic left-right oscillation, manual vertical airflow adjustment and timer control.
Is EF1811 an air conditioner?
No. It is a portable evaporative air cooler / water cooling fan for personal spaces. It does not use a compressor or refrigerant and should not be described as a room air conditioner.
What is the water tank capacity?
The full tank capacity is 470 mL, with a 400 mL marked scale capacity. The specified humidification output is 55 mL/h.
How strong is the airflow?
EF1811 provides three fan speeds. The specified airflow range is about 2.5–3.5 m/s, with maximum air speed of at least 3.5 m/s. Motor speed is approximately 1900 / 2600 / 3150 r/min for Low / Medium / High.
How long can the rechargeable air cooler operate?
With all functions operating, the reference runtime is 1.5 hours. Depending on the speed and function combination, runtime is approximately 1.5–4.5 hours with oscillation or 2.5–10 hours without oscillation.
How long does charging take?
Charging time is approximately 7 hours (±0.5 hour), with a specified charging current of 600 mA.
Does the battery include protection?
Yes. The battery includes over-charge and over-discharge protection, and the circuit board also includes over-charge and over-discharge protection.
Can EF1811 be customized for OEM or ODM projects?
Yes. B2B projects can be evaluated for color, logo, packaging and market-specific documentation. Final customization scope depends on quantity, target market, compliance requirements and engineering review.
What accessories are included?
The standard accessory set includes one user manual and one USB charging cable.
B2B INQUIRY
Need samples, OEM options or compliance documents?
Tell us your market, expected quantity, target certification and customization needs. We can prepare the product specification and quotation structure for your sourcing review.