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WEIYE SEPAT SF-20ADC Portable DC Solar air Cooler Evaporative Cooling Fan Solar air Cooler
Description
The WEIYE SEPAT SF-20ADC is an upgraded DC solar evaporative air cooler that builds on the proven SF-20 platform with a rugged mechanical control system designed for simplicity and field reliability. By eliminating digital electronics in favor of mechanical dials and switches, the SF-20ADC reduces failure points and ensures easy operation and maintenance — even in harsh, off-grid environments where technical support is limited. This compact unit delivers 2,000 m³/h of cool airflow for spaces between 10 and 25 square meters, powered by a 12V or 24V brushless DC motor and a 24V 20AH lead-acid battery. The 200W solar panel compatibility enables complete off-grid operation, making it an ideal solution for remote locations, developing regions, and eco-conscious users. Manufactured by Taizhou Weiye Refrigeration Equipment Co., Ltd., a factory with ISO 9001 certification and over 18 years of specialization, the SF-20ADC represents a step-up option for distributors targeting the growing solar cooling market in Africa, the Middle East, and Southeast Asia.
Key Features
2,000 m³/h Airflow — Effective Cooling for Small to Medium Spaces
With 2,000 m³/h of cool air output, the SF-20ADC efficiently cools rooms and semi-open areas between 10 and 25 square meters — from small bedrooms and home offices to modest retail stalls and workshop corners. The high air displacement rate ensures rapid temperature drop without the high energy cost of compressor-based AC units, making it a practical choice for budget-conscious households and micro-businesses in hot climates.
12V/24V Brushless DC Motor — Efficient and Quiet
The brushless DC motor operates with higher efficiency and lower noise than brushed alternatives. The 12V/24V architecture is optimized for direct solar panel connection without voltage conversion losses, maximizing the cooling output per watt of solar input.
24V 20AH Lead-Acid Battery — Proven Reliability
The maintenance-free sealed lead-acid battery provides 10-25 hours of cordless cooling after a full solar charge. While lead-acid technology is heavier than lithium, it offers superior cost-effectiveness, wide temperature tolerance, and a well-established recycling infrastructure — important considerations for markets in Africa and South Asia.
20-Liter Tank with Water Level Indicator
The 20-liter tank supports 7-10 hours of evaporative cooling per fill. An integrated water level indicator — visible from the front panel — helps users avoid dry-running the pump and plan refills during extended use.
200W Solar Panel Compatible
The SF-20ADC connects directly to any standard 24V 200W solar panel via MC4-compatible connectors, delivering faster battery charging and more consistent cooling output even under partial sunlight. The built-in charge controller regulates voltage to protect the battery from overcharging, eliminating the need for external charge management equipment.
Compact PP Body — Portable and Durable
The lightweight PP cabinet with built-in carry handle makes the SF-20ADC easy to transport between rooms, load into vehicles, or move across outdoor sites. The UV-stabilized material resists sun damage and discoloration — important for units that spend significant time outdoors under direct sunlight.
Technical Specifications
| Model name | SF-20A DC |
| Battery capacity | 24V20AH |
| Cooling area | 10-25m2 |
| Air distance | 4-5m |
| Airflow | 2000m3/h |
| Voltage power | DC24V/AC230V/45W |
| Control type | Mechanical |
| Speed | Stepless speed |
| Water tank | 20L |
| N.W. | 17kg(12V)/20.3kg(24V) |
| G.W. | 18.8kg(12V)/21.5kg(24V) |
| Packing size | 50*30*64cm |
| 40HQ QTY | 464 sets |
Applications
Off-Grid Rural Homes: Provides affordable solar-powered cooling for households without reliable grid electricity, particularly in sub-Saharan Africa and rural South Asia.
Camping & Overland Travel: The 12V DC system integrates with vehicle electrical systems and portable solar panels, making it suitable for RVs, overland vehicles, and base camps.
Small Retail Kiosks & Market Stalls: Keeps vendors and customers comfortable in open-air markets where AC power is unavailable or unreliable.
Guard Booths & Remote Checkpoints: Solar-powered cooling for security personnel stationed at remote gates, construction site entrances, and agricultural checkpoints.
NGO & Aid Projects: A cost-effective cooling solution for field offices, medical tents, and community shelters in humanitarian and development programs where power infrastructure is limited.
Manufacturing & Quality Assurance
Taizhou Weiye Refrigeration Equipment Co., Ltd. has specialized in home appliances - including evaporative air coolers and electric heaters - since 2007. Operating from a 10,000+ m² production facility with four active assembling lines and approximately 120 skilled employees, the factory maintains a daily output capacity of 1,500 to 2,000 units and ships products to over 16 countries across Europe, North America, South America, Southeast Asia, the Middle East, and Africa.
Every unit undergoes a full QC inspection before shipment, including motor performance testing, water tank leak testing, battery charge/discharge cycling, and cooling efficiency verification. The factory holds ISO 9001 quality management certification, and SEPAT-brand products have passed CCC, CE, FCC, CB, ROHS, and PSE certifications - backed by over 47 patent certificates - meeting safety and performance requirements for diverse international markets.
OEM and ODM services are available. Buyers can customize body color, branding, packaging, and select optional accessories to match local market requirements.
Frequently Asked Questions
Installation & Setup
Setting up the SEPAT evaporative air cooler takes less than 10 minutes and requires no specialized tools or professional installation. Place the unit on a flat, stable surface near an open window or doorway — this is important because evaporative cooling works best with a steady supply of fresh outside air. Fill the water tank through the top or side access port until the water level indicator shows full. If your model includes an ice box compartment, add frozen ice packs for an extra cooling boost. Plug the power cord into a standard AC outlet (for AC models) or connect to the DC power source (for DC/solar models). Select your desired fan speed and activate the cooling pump function. For optimal performance, position the cooler so that the airflow is directed toward the area where people gather, and keep a window slightly open on the opposite side of the room to allow proper air circulation and prevent humidity buildup.
Why Choose SEPAT Over Conventional Air Conditioning
For distributors and commercial buyers, the value proposition of evaporative cooling extends far beyond the purchase price. A SEPAT air cooler typically consumes 100 to 250 watts of electricity — roughly the same as two incandescent light bulbs — while a comparable split-system air conditioner draws 1,000 to 2,500 watts. Over a single cooling season in a warm climate, this difference can translate into hundreds of dollars in electricity savings per unit. Maintenance is equally straightforward: cleaning the water tank and replacing the cooling pad once per season are tasks that any end-user can perform, eliminating the need for costly HVAC service calls. Furthermore, because evaporative coolers contain no refrigerants, they are not subject to increasingly strict environmental regulations on HFCs and HCFCs, making them a future-proof product category for markets with tightening emissions standards. For businesses operating in dry and semi-arid regions — which cover much of the Middle East, Africa, Australia, and the southwestern United States — evaporative cooling is not just an economical alternative but often the most practical solution, as it actually adds beneficial moisture to dry indoor air rather than stripping it away.
How Evaporative Cooling Works
Evaporative air cooling is a natural, energy-efficient process that mimics the cooling effect of a sea breeze. Inside the unit, a water pump circulates water from the tank to the top of a honeycomb cooling pad. As warm outside air is drawn through the wet pad by the fan, the water evaporates, absorbing heat from the air and lowering its temperature by 5–15 °C before it is discharged into the room. Unlike compressor-based air conditioners that recirculate stale indoor air, evaporative coolers continuously introduce 100% fresh, filtered outside air, making them healthier for prolonged use and far cheaper to operate — typically consuming only 10–20% of the electricity of a comparable AC unit. The SF series coolers from Taizhou Weiye enhance this principle with thick 5090-grade cooling pads and powerful motors that maximize evaporative surface area and airflow volume. No refrigerants, no compressor, no closed-loop ductwork — just water, air, and physics.
Q1: What is the Minimum Order Quantity (MOQ) for SEPAT evaporative air coolers?
A: Our standard Minimum Order Quantity (MOQ) for any single model is one 40HQ shipping container (loading quantities generally vary from 140 to 850 units depending on the specific model's chassis and tank capacity). This single-container threshold applies to both our standard SEPAT configurations and customized OEM/ODM production runs. Sample orders for laboratory quality checks are welcomed prior to bulk contract finalization.
Q2: What is your standard B2B production lead time?
A: For standard SEPAT stock configurations, shipment takes 15–20 days. For custom OEM/ODM production runs, shipment occurs within 25–30 days after packaging artwork confirmation and deposit receipt.
Q3: How do you support overseas distributors with aftermarket warranties?
A: We stand behind our quality with a solid 1-Year Comprehensive Warranty on all SEPAT air cooler models. To ensure uninterrupted service in your territory, we ship 1% Free-of-Charge (FOC) essential spare parts directly inside your 40HQ container orders.
Q4: What is the container loading capacity for SEPAT air cooler models?
A: Because our product line ranges in water tank capacity (from 6L to 80L+), the loading quantity per container depends entirely on the specific product dimensions. Typically, one 40HQ container can accommodate between 140 to 850 units. Once you select your desired models, our logistics department will provide a highly optimized, precise container loading layout (Loading List) to maximize your ocean freight efficiency.
Email: [email protected]
Tel: +86-13957663596
Address: NO.699 Qinglongpu Road, Binhai industrial zone, Luqiao District, Taizhou, Zhejiang, China
