Solar Water Heater
China’s leading solar water heater manufacturer
- Manufacturing and R&D Strength
- Reliable global B2B partners
- Regarding reliability, we set even higher standards
- Technical R&D Support
We focus on providing high-quality OEM and ODM services to our clients, from high-efficiency solar collectors to intelligent water storage systems, all of which can be customized in design and production according to your market needs and brand positioning.
โ 70% direct solar power supply
โ DC inverter-free design
โ 30ยฐC+ temperature rise capability
โ Battery-free, simple system
โ 30-year ultra-long lifespan
โ Quick supply of hot water
โ Pressurized system operation
โ No overheating probleminsummer season
โ Products can be customized
โ Enamel tank
โ 76% High Thermal Efficiency
โ 30+ Years Service Life
โ Closed Double Circulation System
โ SUS316L Stainless Steel Construction
โ Flexible Dual Installation
โ Compact size, easy to connect in series.
โ Minimal solder points for reliable sealing
โ works great in cold weather
โ Tool-free tube swap
โ Handles up to 0.6 MPa
โ Heat pipe tech works at -30โ
โ SUS304 stainless steel inner tank
โ 1500W backup heater auto-switches
โ Simple upkeep cuts running costs
โ Free hot water solution
โ Long service life, low maintenance costs
โ High energy output, low heat loss,
โ Polyurethane insulation layer
How can we help you?
Please feel free to contact us if you have any questions.
ยท Our 250,000-square-meter factory integrates automated production lines and intelligent testing laboratories.
ยท We specialize in OEM and ODM collaborations, providing customized development services to meet your market needs.
ยท 24/7 localized technical support.
ยท Services compliant with EU, North American, and European product certifications.
ยท Plans to establish localized service centers globally.
ยท Currently, we are actively promoting the construction of a global service network to continuously provide a solid guarantee for your business expansion..
ยท Each product undergoes over 300 precise tests and comprehensive simulation verifications during the R&D process.
ยท All of this is to ensure the product’s longevity, durability, and superior energy efficiency.
ยท Over 300 professional engineers
ยท Over 160 technical patents
ยท Four major R&D centers worldwide.
ยท LINUO RITTER is committed to providing cutting-edge heat pump solutions with efficient design, intelligent control, and global adaptability.
A flat plate solar water heater uses an insulated metal box with a dark absorber plate and transparent cover. Sunlight heats the absorber, transferring thermal energy to fluid-filled copper tubes. A pump or thermosiphon circulates heated fluid to a storage tank, providing hot water for domestic or commercial use.
Flat plate collectors offer better durability, lower cost, and superior performance in warm climates. Their solid construction resists hail and wind, while the simple design requires minimal maintenance. Unlike evacuated tubes, they integrate seamlessly with building architecture and perform consistently in sunny, non-freezing conditions.
Flat plate solar collectors last 20โ30 years with proper maintenance. The tempered glass, aluminum frame, and copper piping resist corrosion and UV degradation. Most manufacturers offer 10โ15 year warranties, though systems often outlast warranty periods with basic upkeep.
Yes, indirect systems with glycol antifreeze operate efficiently in sub-zero temperatures. While snow cover temporarily reduces output, the dark absorber plate accelerates snow melt. In cold climates, evacuated tubes may offer marginal efficiency gains, but flat plates with proper freeze protection remain viable and cost-effective.
Flat plate collectors typically reach 150ยฐFโ200ยฐF (65ยฐCโ93ยฐC) in full sun, depending on ambient temperature, insulation quality, and fluid flow rate. Stagnation temperatures (no fluid circulation) can exceed 300ยฐF (150ยฐC), which is why pressure relief valves and expansion tanks are essential safety components.
A family of four requires 1โ2 flat plate collectors (approximately 40โ80 square feet or 4โ8 mยฒ) paired with an 80-gallon (300-liter) storage tank. Exact sizing depends on local solar irradiance, hot water usage patterns, and desired backup dependency. Southern climates need less collector area than northern regions.
Flat plate collectors install on shingle, tile, metal, and flat roofs with appropriate mounting hardware. South-facing slopes at 30ยฐโ45ยฐ optimize year-round performance. Flat roofs require tilted rack systems. Structural load assessments ensure roof integrity, as filled collectors weigh 30โ50 lbs per square foot.
