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RNE-NC-15
SOLARAVEN
841912
Zimbabwe Solar Geyser: Harness the Power of the Sun for Endless Hot Water
Clean, Efficient, and Built for Zimbabwe's Climate
Why choose Zimbabwe low pressure solar geyser?
100% Solar-Powered: No electricity or gas needed. Save up to 80% on energy costs while reducing your carbon footprint.
Durable Construction: Food-grade stainless steel (SUS304-2B) tank and corrosion-resistant外壳 ensure longevity in Zimbabwe’s harsh weather.
Easy Installation: Direct plug-and-play design with no complex plumbing—ideal for homes, schools, and small businesses.
Climate-Adaptive: ICS (Integrated Collector Storage) passive heating + active circulation technology works in both sunny and cloudy conditions.
Large Capacity Options: Available in 100L, 150L, 200L, and 300L sizes to fit families of 2–10+ people.

Key Features
✔ Energy Efficiency: Cuts electricity bills by up to 80% compared to electric geysers.
✔ Low Maintenance: No moving parts in the passive system; fewer repairs and longer lifespan.
✔ Quick Heating: Batch heating method ensures hot water even during peak demand.
✔ Versatile Use: Perfect for showers, kitchens, and commercial spaces like guesthouses
Ideal for Zimbabweans
Rural Areas: Off-grid solution with no reliance on unstable power supply.
Urban Homes: Reduce monthly expenses and enjoy consistent hot water.
Schools/Hospitals: Reliable hot water for hygiene and sanitation needs.
Eco-Conscious Users: Support renewable energy and sustainable living
1. What if there’s no sunlight for days?
A backup electric heating rod (optional) can maintain water temperature during extended cloudy periods. The 1500W rod heats 100L water from 20°C to 60°C in 2.5 hours.
2. Is the water safe for drinking?
Yes, provided the tank is cleaned regularly and local water quality meets hygiene standards. The system does not alter water chemistry or introduce contaminants.
3. Can the system handle hard water?
A water softener accessory is recommended to prevent scaling in areas with hard water. Alternatively, periodic flushing with vinegar solution dissolves mineral deposits.
4. What warranty is offered?
Standard 5-year warranty on tanks and 2 years on components, extendable upon request. Professional installation is required to validate the warranty.
5. How to clean the solar tubes?
Rinse tubes with a garden hose every 6 months. For stubborn dirt, use a soft brush and mild detergent. Avoid abrasive tools to prevent scratching.

The low pressure solar geyser adopts solar vacuum tube technology, the solar evacuated tubes absorber will collect heat from the sunlight and transfer into water inside the tubes. The tube water is heated to rise up and tank cold water sink down to creat a circulation, called thermosiphon effect. The solar geyser water tank will be gradully full of hot water as the solar glass tubes keep collecting heat from the sunlight. It is no need of electricity heating. It is only by solar thermal heating.

Thermosiphon low pressure solar geyser water heater specification:
Model | Solar Vacuum Tube | Capacity | Absorber Area | Suitable for | |
Pcs | Size(mm) | (L) | (㎡) | (Persons) | |
RNE-NC-10 | 10 | 58×1800 | 100 | 1.330 | 2 |
RNE-NC-15 | 15 | 58×1800 | 150 | 1.995 | 3 |
RNE-NC-20 | 20 | 58×1800 | 200 | 2.660 | 4 |
RNE-NC-25 | 25 | 58×1800 | 250 | 3.325 | 5 |
RNE-NC-30 | 30 | 58×1800 | 300 | 3.990 | 6 |
More details of low pressure solar geyser technical data :
low pressure Solar water heater with solar vacuum tubes | |||
Solar Water Tank | 1 | Material of Outer Tank Shell | Galvanized steel with anti corrosive paint |
2 | Material of Inner Tank Chest | stainless steel 304 2B or 316L | |
3 | Water Tank Diameter | 【460/360MM】 | |
4 | Water Tank Insulating Layer | Imported Polyurethane,High Density,【50MM】 | |
5 | Heat Preservation Period | 72~80Hours | |
6 | Welding Method | Argon Arc Welding | |
Solar Vacuum Tube | 7 | Solar vacuum tube structure | All-Glass Double Co-Axial Structure |
8 | Glass Material | High Borosilicate 3.3 Glass | |
9 | Tube Size | 【diameter 58MM* length 1800MM or 1500MM】 | |
10 | Outer Tube Dia.&Glass Thickness | φ58±0.7mm,Glass Thickness 1.6±0.15mm | |
11 | Inner Tube Dia.&Glass Thickness | φ47±0.7mm,Glass Thickness 1.6±0.15mm | |
12 | Coating Material | 【CU/SS-ALN(H)/SS-ALN(L)/ALN】 | |
13 | Sediment Method | Tri-Element Magnetron Sputtering Plating | |
14 | Absorb Ratio | >96%(AM1.5) | |
15 | Thermal Emissivity | ≤6%/(80℃) | |
16 | Hail Resistance | φ25mm | |
Solar water heater Bracket | 17 | Bracket Material | 【Stronger Galvanized Steel】 |
18 | Bracket Angle | 【25 / 45°】 | |
19 | Bolts&Muts | Stainless Steel | |
Assistant Tank | 20 | Assistant Tank Material | Stainless steel |
21 | Assistant Tank Capacity | 【5L/8L/20L】 | |
22 | Assistant Tank Model | Vertical/Horizontal,Optional | |
150L thermosiphon solar water heater with 15pcs solar vacuum tubes.
"Switch your electric geyser to Solar Today—Enjoy Free Hot Water Tomorrow!"
Contact us for a free site assessment and customized quote.


Zimbabwe Solar Geyser: Harness the Power of the Sun for Endless Hot Water
Clean, Efficient, and Built for Zimbabwe's Climate
Why choose Zimbabwe low pressure solar geyser?
100% Solar-Powered: No electricity or gas needed. Save up to 80% on energy costs while reducing your carbon footprint.
Durable Construction: Food-grade stainless steel (SUS304-2B) tank and corrosion-resistant外壳 ensure longevity in Zimbabwe’s harsh weather.
Easy Installation: Direct plug-and-play design with no complex plumbing—ideal for homes, schools, and small businesses.
Climate-Adaptive: ICS (Integrated Collector Storage) passive heating + active circulation technology works in both sunny and cloudy conditions.
Large Capacity Options: Available in 100L, 150L, 200L, and 300L sizes to fit families of 2–10+ people.

Key Features
✔ Energy Efficiency: Cuts electricity bills by up to 80% compared to electric geysers.
✔ Low Maintenance: No moving parts in the passive system; fewer repairs and longer lifespan.
✔ Quick Heating: Batch heating method ensures hot water even during peak demand.
✔ Versatile Use: Perfect for showers, kitchens, and commercial spaces like guesthouses
Ideal for Zimbabweans
Rural Areas: Off-grid solution with no reliance on unstable power supply.
Urban Homes: Reduce monthly expenses and enjoy consistent hot water.
Schools/Hospitals: Reliable hot water for hygiene and sanitation needs.
Eco-Conscious Users: Support renewable energy and sustainable living
1. What if there’s no sunlight for days?
A backup electric heating rod (optional) can maintain water temperature during extended cloudy periods. The 1500W rod heats 100L water from 20°C to 60°C in 2.5 hours.
2. Is the water safe for drinking?
Yes, provided the tank is cleaned regularly and local water quality meets hygiene standards. The system does not alter water chemistry or introduce contaminants.
3. Can the system handle hard water?
A water softener accessory is recommended to prevent scaling in areas with hard water. Alternatively, periodic flushing with vinegar solution dissolves mineral deposits.
4. What warranty is offered?
Standard 5-year warranty on tanks and 2 years on components, extendable upon request. Professional installation is required to validate the warranty.
5. How to clean the solar tubes?
Rinse tubes with a garden hose every 6 months. For stubborn dirt, use a soft brush and mild detergent. Avoid abrasive tools to prevent scratching.

The low pressure solar geyser adopts solar vacuum tube technology, the solar evacuated tubes absorber will collect heat from the sunlight and transfer into water inside the tubes. The tube water is heated to rise up and tank cold water sink down to creat a circulation, called thermosiphon effect. The solar geyser water tank will be gradully full of hot water as the solar glass tubes keep collecting heat from the sunlight. It is no need of electricity heating. It is only by solar thermal heating.

Thermosiphon low pressure solar geyser water heater specification:
Model | Solar Vacuum Tube | Capacity | Absorber Area | Suitable for | |
Pcs | Size(mm) | (L) | (㎡) | (Persons) | |
RNE-NC-10 | 10 | 58×1800 | 100 | 1.330 | 2 |
RNE-NC-15 | 15 | 58×1800 | 150 | 1.995 | 3 |
RNE-NC-20 | 20 | 58×1800 | 200 | 2.660 | 4 |
RNE-NC-25 | 25 | 58×1800 | 250 | 3.325 | 5 |
RNE-NC-30 | 30 | 58×1800 | 300 | 3.990 | 6 |
More details of low pressure solar geyser technical data :
low pressure Solar water heater with solar vacuum tubes | |||
Solar Water Tank | 1 | Material of Outer Tank Shell | Galvanized steel with anti corrosive paint |
2 | Material of Inner Tank Chest | stainless steel 304 2B or 316L | |
3 | Water Tank Diameter | 【460/360MM】 | |
4 | Water Tank Insulating Layer | Imported Polyurethane,High Density,【50MM】 | |
5 | Heat Preservation Period | 72~80Hours | |
6 | Welding Method | Argon Arc Welding | |
Solar Vacuum Tube | 7 | Solar vacuum tube structure | All-Glass Double Co-Axial Structure |
8 | Glass Material | High Borosilicate 3.3 Glass | |
9 | Tube Size | 【diameter 58MM* length 1800MM or 1500MM】 | |
10 | Outer Tube Dia.&Glass Thickness | φ58±0.7mm,Glass Thickness 1.6±0.15mm | |
11 | Inner Tube Dia.&Glass Thickness | φ47±0.7mm,Glass Thickness 1.6±0.15mm | |
12 | Coating Material | 【CU/SS-ALN(H)/SS-ALN(L)/ALN】 | |
13 | Sediment Method | Tri-Element Magnetron Sputtering Plating | |
14 | Absorb Ratio | >96%(AM1.5) | |
15 | Thermal Emissivity | ≤6%/(80℃) | |
16 | Hail Resistance | φ25mm | |
Solar water heater Bracket | 17 | Bracket Material | 【Stronger Galvanized Steel】 |
18 | Bracket Angle | 【25 / 45°】 | |
19 | Bolts&Muts | Stainless Steel | |
Assistant Tank | 20 | Assistant Tank Material | Stainless steel |
21 | Assistant Tank Capacity | 【5L/8L/20L】 | |
22 | Assistant Tank Model | Vertical/Horizontal,Optional | |
150L thermosiphon solar water heater with 15pcs solar vacuum tubes.
"Switch your electric geyser to Solar Today—Enjoy Free Hot Water Tomorrow!"
Contact us for a free site assessment and customized quote.

