Home Solar Systems Rooftop Low Pressure Vacuum Tube Stainless Steel Solar Water Heater (100L / 200L / 300L) offered by our company is a high-performance, eco-friendly, and cost-saving solution for residential hot water needs. Designed for rooftop installations, this low-pressure system utilizes advanced vacuum tube solar technology and food-grade stainless steel tanks, ensuring efficient heat absorption, long-lasting performance, and clean hot water supply even in off-grid environments.
Solar-Powered Efficiency – Operates with zero electricity, reducing utility bills.
Low Pressure Design – Simple and safe, ideal for households with gravity-fed water systems.
Vacuum Tube Technology – High-efficiency solar collection with strong heat retention.
Stainless Steel Tanks – Hygienic, anti-corrosive, and long-lasting materials.
Up to 72 Hours of Heat Retention – Reliable performance during cloudy weather.
Available in Multiple Capacities – 100L, 200L, 300L for small to large families.
Optional Electric Backup Heater – Ensures hot water supply even on overcast days.
Fast & Easy Rooftop Installation – Modular frame for different roof types and angles.
Packaging Format: Standard export carton or wooden crate
Delivery Time:
Small orders (≤170 units): 15–18 working days
Large orders (≥171 units): Negotiable
Optional Accessories:
Electric backup heater
Digital temperature controller
Mixing valve
Custom Branding: OEM/ODM services available
MOQ for OEM: 100 sets per model
Suitable Climates: Tropical, Subtropical, and Moderate Zones
| Specification | Details |
|---|---|
| Product Name | Home Solar Systems Rooftop Low Pressure Vacuum Tube Stainless Steel Solar Water Heater |
| Available Capacities | 100 Liters / 200 Liters / 300 Liters |
| Application | Home / Residential Rooftop Installations |
| Operation Type | Thermosyphon (Natural Circulation) |
| Circulation Mode | Open Loop / Direct System |
| Inner Tank Material | SUS304-2B or SUS316L Food-Grade Stainless Steel |
| Outer Tank Material | SUS304 or SS202 Stainless Steel |
| Tank Thickness | 0.4–0.5 mm (Inner) / 0.4 mm (Outer) |
| Insulation | 50–55 mm High-Density Polyurethane Foam (45kg/m³) |
| Heat Preservation | Up to 72 Hours |
| Vacuum Tube Material | 3.3 Borosilicate Glass |
| Tube Coating | Cu-SS-ALN/ALN for Maximum Absorption |
| Tube Diameter & Length | 58mm × 1800mm / 47mm × 1500mm |
| Glass Tube Thickness | 1.6 mm – 2.2 mm |
| Frame Material | Stainless Steel 1.2 mm or Galvanized Steel 1.5 mm |
| Frame Angle | 20° / 38° / 45° (Customizable) |
| System Pressure | Low Pressure (0.05 MPa Max) |
| Electric Backup Option | Yes (Optional Electric Heater Element) |
| Control System | Manual or Digital Controller (Optional) |
| Heat Loss Rate | ULT = 0.6 ~ 0.7 W/(m²°C) |
| Warranty | 5 Years |
Reliable & Renewable Hot Water
Made for Homes with Low Water Pressure
100% Stainless Steel, Food-Grade Safety
High Thermal Conversion Efficiency
Available in 100L / 200L / 300L
Export-Friendly with Customization Options
Q1: Can the system work without electricity?
Yes, it works entirely through solar power and natural circulation.
Q2: Is it suitable for apartments or only houses?
It is mainly designed for individual houses and villas with rooftop access.
Q3: What happens if there's no sun for a few days?
The system retains heat for up to 72 hours; electric backup is available if needed.
Q4: Do you provide OEM services for bulk orders?
Yes, we provide logo printing, customized tank sizes, and packaging options.
Q5: How long does the system last?
With proper maintenance, the system can last 15–20 years or more
| | Absorbing Area | Vacuum tube | Tank Capacity | Qty per | ||
| | 20GP/40HQ | |||||
| MODEL NO. | Container | |||||
| | (m2) | Diameter(mm) | Length(mm) | No.(pcs) | (Liter) | (set) |
| ENSUN-CNP80-58/1.8 | 0.8 | 58 | 1800 | 8 | 80 | 92/235 |
| ENSUN-CNP100-58/1.8 | 0.8 | 58 | 1800 | 10 | 100 | 78/200 |
| ENSUN-CNP120-58/1.8 | 0.96 | 58 | 1800 | 12 | 120 | 68/170 |
| ENSUN-CNP150-58/1.8 | 1.9 | 58 | 1800 | 15 | 150 | 55/141 |
| ENSUN-CNP180-58/1.8 | 2.16 | 58 | 1800 | 18 | 180 | 48/118 |
| ENSUN-CNP200-58/1.8 | 2.4 | 58 | 1800 | 20 | 200 | 42/108 |
| ENSUN-CNP240-58/1.8 | 2.8 | 58 | 1800 | 24 | 240 | 36/90 |
| ENSUN-CNP300-58/1.8 | 3.6 | 58 | 1800 | 30 | 300 | 28/70 |
| ENSUN-CNP360-58/1.8 | 4.3 | 58 | 1800 | 36 | 350 | 24/62 |
SUNECO Solar Technology has an experienced team dedicated to ensuring the highest standards in solar water heating performance. We are committed to delivering personalized customer solutions and ensuring long-lasting product reliability in every installation. Your orders for solar heating systems are closely monitored and implemented to maintain superior product quality from production to delivery.
SUNECO’s solar thermal division operates 24 hours a day, 7 days a week, ensuring responsive service and support across all time zones and regions. Whether you need a solar water heater for a home, a custom solar collector for a commercial building, or accessories for a full installation, SUNECO is ready to serve with consistent excellence and technical expertise.
