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WEIYE SEPAT SF-20TDC China Factory Portable DC Solar air Cooler Evaporative Cooling Fan Solar air Cooler
Description
The WEIYE SEPAT SF-20TDC is a compact, portable DC solar evaporative air cooler engineered for off-grid cooling in small spaces. With a 20-liter water tank, 3000 m³/h airflow, and a 24V 20AH lead-acid battery, this unit provides reliable cooling for areas between 10 and 25 square meters — ideal for small rooms, camping tents, guard booths, and mobile kiosks. The brushless DC motor delivers efficient, quiet operation, and the 200W solar panel compatibility ensures true cordless freedom in remote locations. Manufactured by Taizhou Weiye Refrigeration Equipment Co., Ltd., a China-based factory with ISO 9001 certification and over 18 years of evaporative cooling expertise, the SF-20TDC is an entry-level solar cooling solution trusted by distributors across Africa, Southeast Asia, and the Middle East for its cost-effectiveness and durability.
Key Features
Compact Portable Design — Lightweight and Easy to Carry
Weighing significantly less than larger models, the SF-20TDC is designed for true portability. A built-in carry handle and compact footprint allow one person to lift and transport the unit between rooms, into a vehicle, or across outdoor sites. This makes it ideal for rental businesses, mobile vendors, and temporary installations.
24V DC Brushless Motor — Efficient Solar Operation
The 24V brushless DC motor delivers efficient cooling with minimal power draw. Compatible with standard 200W solar panels, the unit can operate entirely off-grid — no inverter or AC power required. The 24V 20AH lead-acid battery stores sufficient energy for 8-25 hours of cordless runtime after a solar charge.
20-Liter Compact Water Tank
A practical 20-liter tank balances cooling duration with portability. On a full tank, the SF-20TDC provides 7-10 hours of cooling depending on fan speed and ambient conditions. The tank includes a water level indicator and a wide-fill opening for easy refilling with a bucket or hose.
3000 m³/h Airflow for Small Spaces
With 3000 m³/h of cool air output, the SF-20TDC effectively covers rooms up to 25 m². The stepless mechanical control allows users to balance airflow and battery consumption — a practical feature when operating on stored battery power.
ABS Body — Lightweight and Durable
Molded from high-grade ABS, the cabinet is corrosion-resistant, UV-stabilized, and impact-tolerant. The material choice keeps the unit lightweight for portability while providing sufficient durability for daily use in residential and light commercial settings.
Cost-Effective Solar Cooling Solution
As the most affordable solar-compatible cooler in the SEPAT lineup, the SF-20TDC offers an accessible entry point for distributors entering the off-grid cooling market. Low per-unit cost combined with reliable factory-direct support makes it a popular choice for NGO projects, rural electrification programs, and small-scale distributors.
Technical Specifications
| Model name | SF-20T DC |
| Battery capacity | 24V20AH |
| Cooling area | 10-25m2 |
| Air distance | 5-8m |
| Airflow | 3000m3/h |
| Voltage power | DC24V/AC230V/75W |
| Control type | Mechanical |
| Speed | Stepless speed |
| Water tank | 20L |
| N.W. | 23.2kg |
| G.W. | 24.4kg |
| Packing size | 52.5*30*66cm |
| 40HQ QTY | 464 sets |
Applications
Small Rooms & Dormitories: Cost-effective personal cooling for student dorms, hostel rooms, and small apartments where central AC is unavailable.
Camping & Outdoor Recreation: Battery and solar-powered operation makes it perfect for tents, RVs, and campsites with no electrical hookup.
Guard Booths & Security Posts: Keeps security personnel cool in small guard houses, parking lot booths, and entrance checkpoints.
Mobile Food Kiosks & Street Vendors: Provides spot cooling for food cart operators and market stall vendors who work outdoors in hot weather.
Rural & Off-Grid Homes: An affordable entry-level cooling solution for rural households with solar panel systems or limited electricity access.
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
