300L high-pressure solar geyser

300L Apollo High-Pressure Thermosyphon Solar Geyser – Complete System

The 300L Apollo high-pressure thermosyphon solar geyser is a large-capacity complete solar hot water system designed for properties with heavy daily hot water demand. It is a strong option for bigger households, guest houses, small lodges, shared accommodation, staff housing and properties where several people may need hot water throughout the day.

This system is generally suited to approximately 6 or more people, depending on water usage habits, shower times, bath use, kitchen demand, laundry routines and backup heating settings. The larger 300L storage capacity gives the property more stored hot water for busy mornings, evening routines and high-use periods where multiple bathrooms, kitchens or users may place demand on the system close together.

The Apollo high-pressure thermosyphon system uses solar energy to heat water during the day. The solar collector absorbs heat from the sun, and the thermosyphon design allows hot water to circulate naturally between the collector and storage tank during normal solar operation. This makes the system a practical solar water heating solution for properties that need a larger supply of hot water while still wanting to reduce electricity usage.

Customers comparing larger hot water systems can also view our main solar geysers page for other solar geyser sizes and options.

Built for Larger Hot Water Demand

The 300L Apollo high-pressure thermosyphon solar geyser is designed for properties where a smaller geyser may not provide enough stored hot water. In a busy household or shared property, hot water can be used quickly when several people shower, use basins, run kitchen taps or need cleaning water around the same time.

The larger 300L capacity helps support these routines by providing more hot water storage. This can be useful for homes with multiple bathrooms, families with teenagers, guest accommodation, staff quarters and properties where hot water demand changes throughout the day.

The correct system size should always be based on real usage rather than only the number of people. A household with short showers may use less water than expected, while a smaller property with frequent baths, long showers and high kitchen demand may need more storage. The 300L system is best suited to properties that genuinely need larger capacity.

Complete Apollo Thermosyphon Solar Geyser System

This is a complete solar geyser system, not only a replacement cylinder. The Apollo 300L high-pressure thermosyphon package includes the solar geyser tank, collector, frame, valves, pipework and fittings.

The tank stores heated water, the collector gathers solar heat, and the included components form a complete solar hot water package.

The high-pressure design is intended for compatible pressurised hot water systems. Product compatibility, pressure ratings and included components should be checked against the supplier’s specifications.

How the Thermosyphon Process Works

The thermosyphon process uses the natural movement of hot water. As water heats up in the solar collector, it rises into the storage tank. Cooler water moves down toward the collector to be heated. This creates a natural circulation cycle while the sun is available and there is enough temperature difference between the collector and the tank.

This design is one of the reasons thermosyphon systems are popular. During normal solar heating, the circulation does not depend on a pump. With fewer moving parts involved in solar circulation, the system offers a straightforward way to make use of solar heat.

The performance of the system depends on sun exposure, weather, heat losses and household usage. On sunny days, the solar collector can heat a large volume of water and reduce the amount of work required from the electric backup element.

High-Pressure Hot Water Comfort

The Apollo 300L system is designed for high-pressure hot water use. This is important for properties that use mixer taps, modern bathrooms, showers and normal pressurised plumbing fixtures.

A high-pressure solar geyser can provide comfortable hot water delivery in a compatible pressurised plumbing system. The pressure rating and safety specifications are important product details to check.

The large storage capacity is intended to support regular hot water demand in properties with several users.

Helps Reduce Electricity Usage

A 300L geyser can be one of the biggest electricity users in a high-demand property. When a large volume of water is heated only by an electric element, electricity usage can be high, especially if the geyser is left on for long periods or if hot water is used repeatedly throughout the day.

The 300L Apollo high-pressure thermosyphon solar geyser helps reduce electricity usage by using the sun to heat water during the day. When solar conditions are good, the system can provide useful hot water with less dependence on the electric element.

This does not mean electric backup is removed completely. The purpose is to let solar energy carry as much of the heating load as possible, while keeping backup heating available for cloudy days, cold weather, early mornings, evenings and higher usage periods.

Electric Backup for Cloudy Days and Peak Use

Larger households and guest properties still need reliable hot water even when the weather changes. For this reason, electric backup heating remains an important part of the system.

During cloudy weather, winter conditions, early morning use or very busy hot water periods, the electric element can assist when solar heating has not been enough. This keeps the system practical for everyday use and helps avoid the inconvenience of running out of hot water when demand is high.

The best results come from using backup heating carefully. Rather than leaving the element running unnecessarily, the system can be managed with timed heating so electricity is used only when needed.

Geyserwise Controller Option

A Geyserwise controller can be included with the 300L Apollo high-pressure thermosyphon solar geyser to help manage temperature and backup heating. The controller allows the user to view the geyser temperature, set timed electric element operation and reduce unnecessary electricity use when the sun has already heated the water sufficiently.

This is especially useful for larger properties because usage patterns are often less predictable. Some homes need hot water early in the morning, while guest houses or shared accommodation may have demand throughout the day and evening.

With a controller, the user can manage backup heating around real usage. This helps keep hot water available when needed while avoiding unnecessary element use when solar heating has already done enough work.

Customers who want more detail on temperature control options can also view our solar geyser controllers page for related control products.

What the 300L Apollo System Includes

The 300L Apollo high-pressure thermosyphon solar geyser system is described as a complete package with these components. Confirm the exact contents and any optional extras with the supplier:

• 300L 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 (optional)

These components make up a complete solar hot water product package. The tank stores heated water, the collector captures solar energy, and the optional controller helps manage electric backup heating.

Available in South Africa

The 300L Apollo high-pressure thermosyphon solar geyser is offered to customers throughout South Africa. It is an option for larger homes, guest houses, small lodges, shared accommodation and properties with high daily hot water demand.

Compare the 300L capacity and product specifications with your hot water requirements. If demand is lower, a smaller solar geyser may be more suitable.

Why Choose the 300L Apollo High-Pressure Thermosyphon Solar Geyser?

The 300L Apollo high-pressure thermosyphon solar geyser is a practical solution for properties that need more stored hot water and want to reduce electricity usage through solar heating. It combines large-capacity storage, high-pressure hot water delivery, natural solar circulation and electric backup support.

For high-use homes and guest properties, the larger storage volume can make daily routines easier. More stored hot water helps support busy mornings, evening use and periods where several people need hot water close together.

The Apollo system combines high-capacity storage, solar water heating and electric backup in one product package for customers who need substantial hot water capacity.