
Factory Price Non-Pressurized Vacuum Tube Solar Water Heater. Cost-Effective Solution: Designed for residential hot water with low maintenance and repair costs. High Energy Efficiency: High vacuum tubes and PU insulation ensure high energy yield and low heat loss. Premium Inner Tank: Stainless steel SUS304 inner tank maintains excellent water quality. Customizable Options: Customized solar water heating solutions available to meet specific needs. Proven Reliability: Long operating life time with robust thermosiphon principle operation. Certified Quality: ISO9001 and CCC certified for consistent product quality and safety. Compact Structure: Compact type design suitable for various residential installation spaces. 3-Year Warranty: Comprehensive 3-year warranty coverage for peace of mind.