Import Direct Thermosiphon Solar Water Heater — Buy in Bulk from Supplier in China

The Direct thermosiphon solar water heater from Changzhou Skylight New Energy Co.,Ltd is a passive system that uses natural convection to circulate water through a solar collector and storage tank, eliminating the need for pumps. It features a food-grade 304 stainless steel inner tank with argon-protected welding to prevent corrosion and ensure potable water quality. The collector plate is coated with a selective black absorber layer to maximize solar absorption, and the insulated tank holds between 100 and 300 litres depending on model.

The outer shell is constructed from powder-coated galvanized steel, providing resistance to UV degradation and weather exposure. The system operates efficiently at ambient temperatures down to -10°C and achieves thermal efficiency of 65% to 75% under standard test conditions. The collector angle is typically fixed at 30 to 45 degrees to suit mid-latitude climates, and the unit is designed for vertical mounting with optional wall brackets. The tank is insulated with 50mm polyurethane foam, reducing standby heat loss to less than 3°C per 24 hours.

This system is commonly purchased by residential builders in southern China, hospitality operators in coastal regions, and agricultural facilities requiring hot water for cleaning or livestock. Buyers typically order in quantities of 10 to 50 units per shipment. Packaging includes foam-lined cardboard boxes with corner protectors. Trade terms available include FOB Shanghai and CIF to major ports. Lead time is typically 20 to 30 days after deposit, and payment is usually via 30% advance with balance against bill of lading.

Changzhou Skylight New Energy Co.,Ltd is a manufacturer based in Taihe Road, Houyu Street, Changzhou, Jiangsu, China. The company is registered as an exporter of solar thermal products and has been active in international trade for over eight years. The listing confirms it is an imported supplier with harbor-level trust verification, indicating documented customs clearance history. No claims are made regarding factory size, workforce, or annual output.

The supplier does not provide details on certifications, R&D capacity, or client references. Its presence is limited to export documentation and product listings. Response rate and average response time are not recorded, suggesting limited active engagement on the platform. Buyers should verify production capacity and quality control procedures directly before placing bulk orders.