Description
150L Apollo High-Pressure Thermosyphon Solar Geyser – Complete Installed System
The 150L Apollo high-pressure thermosyphon solar geyser is a complete installed solar hot water system for smaller homes, townhouses, flats and family properties that need reliable daily hot water without relying only on electric heating. It is a practical option for customers who want a neat roof-mounted solar geyser system with good storage capacity, high-pressure hot water delivery and electric backup support when needed.
This system is generally suitable for approximately 3 to 4 people, depending on shower habits, bath use, kitchen demand, laundry use and the way the household manages backup heating. For many small to medium-sized homes, the 150L size offers a useful balance between hot water capacity, roof space, installation cost and everyday comfort.
The Apollo thermosyphon design uses solar energy to heat water during the day. As the collector warms the water, natural circulation moves hot water into the storage tank and cooler water toward the collector. This allows the system to operate during normal solar heating without relying on a circulation pump.
Customers comparing complete solar hot water options can also view our solar geysers page for other sizes, system types and installed solar geyser solutions.
A Practical Solar Geyser Size for Everyday Homes
The 150L Apollo high-pressure thermosyphon solar geyser is often chosen for homes where the hot water demand is steady but not excessive. It can suit smaller families, couples, townhouses, flats, garden cottages and properties where several people need hot water daily, but where a larger 200L or 300L system may not be required.
The correct size depends on how the home uses hot water. A household that mostly uses showers may find the 150L capacity very practical. A property with frequent baths, long showers, heavy kitchen use or guests staying over may need to use backup heating more carefully or consider a larger system.
This makes the 150L Apollo system a sensible middle option for many customers. It provides more capacity than a small 100L unit while still remaining compact enough for many residential roof layouts.
Customers who need slightly more storage can compare this option with a 200L high-pressure solar geyser where household demand is higher.
Complete Apollo High-Pressure Thermosyphon System
This is a complete installed Apollo solar geyser system, not just a loose geyser tank. The system includes the 150L Apollo high-pressure solar geyser, solar collector, mounting frame, valves, pipework, fittings, insulation where required and the correct installation components.
The tank stores the heated water, while the solar collector gathers heat from the sun. The roof frame supports the system, and the plumbing components help manage pressure, water flow, expansion and safe operation.
Because the system is high pressure, it must be installed correctly. High-pressure hot water systems need proper pressure control, safety valve placement, secure mounting and neat pipe routing. This is why professional installation is important.
How the Thermosyphon Heating Process Works
A thermosyphon solar geyser works through natural hot water movement. When the sun heats the water in the collector, the hotter water rises into the storage tank. Cooler water moves down toward the collector to be heated. This creates a natural circulation cycle while sunlight is available.
This simple movement is one of the main advantages of a thermosyphon solar geyser. During normal solar operation, the system does not depend on a pump to move water between the collector and tank. Fewer moving parts can make the system practical and dependable when installed correctly.
The performance of the system depends on roof position, sun exposure, shade, pipe insulation, weather conditions and household usage. Good collector placement and proper installation help the system make better use of available sunlight.
High-Pressure Hot Water for Comfortable Use
The 150L Apollo system is designed for high-pressure hot water delivery. This makes it suitable for homes with normal pressurised plumbing, mixer taps, showers and bathroom fixtures.
High-pressure hot water can make daily use more comfortable, especially where the home already uses a pressurised geyser setup. The system should be matched correctly to the property’s plumbing so that water pressure, valve protection and hot water delivery work together safely.
A high-pressure solar geyser is not the same as a basic low-pressure setup. It forms part of the home’s pressurised plumbing system, so the installation must be handled carefully by qualified plumbers.
Helps Reduce Electricity Usage
The main benefit of the 150L Apollo high-pressure thermosyphon solar geyser is that it uses sunlight to heat water during the day. A geyser can be one of the more noticeable electricity users in a home, especially when the element is left on for long periods.
By using solar energy, the system can reduce how much heating work the electric element needs to do. On sunny days, the collector can heat the stored water and help reduce unnecessary electricity use.
The amount of saving depends on household habits, weather, roof position, shade, controller settings and how often backup heating is used. The system is designed to support lower electricity usage, while still keeping electric backup available for times when solar heating is not enough.
Electric Backup Heating for Reliable Hot Water
The 150L Apollo solar geyser can include electric backup heating so the household still has hot water support during cloudy weather, winter mornings, evenings or higher-use periods.
This is important because hot water is often needed early in the morning or after sunset, when the sun is not actively heating the collector. Backup heating makes the system practical for normal household routines.
The aim is not to use the electric element all day. The aim is to let solar energy do most of the heating where possible and use backup heating only when needed. This gives the home a good balance between energy saving and comfort.
Geyserwise Controller Option
A Geyserwise controller can be included with the 150L Apollo high-pressure thermosyphon solar geyser. The controller allows the customer to monitor the water temperature and manage electric backup heating more carefully.
With a controller, the user can see whether the water is already hot enough from solar heating. Timed backup heating can also be set for selected periods, such as before morning showers or evening use.
This helps reduce unnecessary element use because the geyser does not need to run continuously when solar heating has already warmed the water. It also gives the customer better control over comfort and electricity usage.
For more system management options, customers can also view our solar geyser controllers page.
Roof Mounting and Collector Position
The 150L Apollo thermosyphon solar geyser is normally installed on a suitable roof area where the tank and collector can receive good sunlight. The installer must consider roof direction, pitch, available space, roof covering, shade and mounting strength.
Shade from trees, nearby buildings, chimneys, walls or other roof features can reduce performance. The system should be positioned where it can make the best practical use of daylight.
The roof frame must be fitted securely and neatly. Whether the roof is tiled, IBR, corrugated or another suitable surface, the mounting method must suit the structure and protect the roof from unnecessary leaks or damage.
Pipe Routing, Insulation and Neat Installation
Good pipe routing helps the system work efficiently and keeps the installation tidy. Long or badly planned pipe runs can waste heat, especially when pipes are exposed to wind or cold conditions.
Pipe insulation helps protect the heat collected by the solar system. This is important because solar-heated water should not lose unnecessary temperature before reaching the storage tank or the home’s plumbing.
A neat installation also makes future servicing easier. Valves, pipes and controls should be placed where they make practical sense and where important components can be accessed when needed.
Valves, Pressure Control and Safety
A high-pressure solar geyser must include suitable valves and safety components. These parts help control pressure, manage expansion and protect the hot water system during operation.
Correct valve placement is important. Safety valves and pressure-control components must be installed properly and should remain accessible for future checks or maintenance.
This is one of the reasons professional installation matters. The system must be safe, reliable and compliant, not simply placed on the roof and connected without proper plumbing planning.
Customers looking for related components can also view our solar geyser valves page for compatible valve and pressure-control products.
What the 150L Apollo System Includes
The exact installation may vary depending on the property and roof layout, but the 150L Apollo high-pressure thermosyphon solar geyser system normally includes:
150L Apollo high-pressure solar geyser
Thermosyphon solar heating system
Roof frame and mounting components
Valves, piping and fittings
Pipe insulation where required
Geyserwise controller option with timed backup heating
Professional installation by accredited plumbers
PIRB Plumbing CoC for applicable retrofit work
Available in Gauteng and Cape Town
These components work together as a complete solar hot water system. The tank stores the water, the collector heats it, the frame supports the roof installation, the valves protect the plumbing side, and the controller helps manage electric backup heating.
Professional Installation by Plumb A Nator
Installation is carried out by accredited Plumb A Nator plumbers with attention to roof mounting, water pressure, safety valves, pipe routing, insulation, controller setup and overall system performance.
A complete solar geyser system must be planned properly before installation. The roof area, plumbing layout, pressure requirements, hot water demand and service access all need to be considered.
Professional installation helps reduce the risk of leaks, poor performance, heat loss, unsafe valve placement and future maintenance problems. It also helps ensure that the system is fitted neatly and explained clearly to the customer.
PIRB Plumbing CoC for Applicable Work
Where applicable plumbing work is completed on the hot water installation, a PIRB Plumbing CoC is issued for compliant work. This gives the customer peace of mind that the plumbing side of the installation has been completed by qualified plumbers.
A solar geyser installation involves pressurised hot water, valves, roof work, pipework, overflow arrangements and safety components. These parts must be handled correctly to support safe and reliable operation.
Available in Gauteng and Cape Town
The 150L Apollo high-pressure thermosyphon solar geyser is available for professional installation in Gauteng and Cape Town. It is a practical choice for small to medium homes that want a complete solar hot water system with electric backup support.
Before installation, the property should be assessed to confirm that the roof, plumbing layout, water pressure and household usage are suitable for a 150L thermosyphon system.
Why Choose the 150L Apollo High-Pressure Thermosyphon Solar Geyser?
The 150L Apollo high-pressure thermosyphon solar geyser is a strong option for customers who want dependable hot water, solar heating support and professional installation in one complete system.
It gives small to medium households a practical balance between stored hot water, energy saving, high-pressure delivery and backup heating. The thermosyphon design uses natural circulation during solar operation, while the optional controller helps manage electric backup more efficiently.
When installed correctly, this Apollo system can provide reliable hot water, improved energy efficiency and long-term value for everyday household use.







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