In today’s world, sustainability is more important than ever, and one simple yet impactful way to embrace eco-friendly living is by converting your traditional geyser to a solar-powered system. A solar geyser, also known as a solar water heater, harnesses energy from the sun to heat water, offering both environmental and financial benefits.

By making the switch, you can significantly lower your electricity bills and reduce your carbon footprint. With various solar geyser options available, such as flat plate collectors and evacuated tube systems, there’s a solution to suit every household’s needs and budget.

In this guide, we’ll explore how solar geysers work, the different types available, and the many advantages of making a solar geyser conversion for a greener, more cost-efficient lifestyle.


How Do Solar Geysers Work?

Solar geysers operate by capturing sunlight through solar collectors, which then convert this energy into heat. This heat is transferred to water stored in a tank, providing a steady supply of hot water. 

Types of Solar Geyser Conversion

Two types of solar collectors are primarily used in a solar geyser conversion: flat plate collectors and evacuated tubes. Flat plate collectors are durable and cost-effective, making them a popular choice. Evacuated tubes, on the other hand, offer higher efficiency, especially in colder climates, though they tend to be more expensive. The existing geyser serves as the storage tank, with water circulating through a flat panel collector during the day. Let us take a closer look at these two options:

  1. Solar Geyser Conversion: Flat Plate Solar Geysers

A flat plate solar geyser is the most common type. They consist of a flat, glass-covered plate that absorbs solar energy and heats the water. These systems are durable, efficient, and suitable for most household solar geyser conversions.

Flat plate collectors are particularly effective in areas with ample sunlight, making them a great choice for Cape Town. They are relatively easy to install and maintain, with a lifespan of 15–20 years. The simplicity of their design also makes them a cost-effective option for many homeowners.

solar geyser conversion - flat plate panels
  1. Solar Geyser Conversion: Evacuated Tube Systems

Evacuated tube systems use a series of glass tubes to capture and retain solar energy. They are highly efficient and perform well in colder climates, however, they are generally more expensive than flat plate solar geyser conversion systems.

The design of evacuated tubes allows them to minimise heat loss, making them highly effective even in low-light conditions. This efficiency translates to faster water heating and less reliance on backup electric heaters. Their ability to maintain performance in varying weather conditions makes them a versatile choice for many regions.

solar geyser conversion - evacuated tube systems

Solar Geyser Conversion with Electric Backup

For those concerned about having hot water during cloudy days, a solar-powered geyser with an electric backup is an excellent option. These systems combine solar and electric heating, ensuring a continuous supply of hot water regardless of the weather.

The integration of an electric backup heater in a solar geyser conversion provides peace of mind and convenience. It ensures that your household never runs out of hot water, even during extended periods of low sunlight. This hybrid approach balances the benefits of solar energy with the reliability of traditional electric heating.

3 Benefits of Solar Geyser Conversion

  1. Cost Savings of a Solar Geyser Conversion

One of the most compelling reasons to convert your geyser to solar is the cost savings. Traditional electric geysers consume a lot of electricity, leading to high utility bills. A solar geyser uses free solar energy, reducing your electricity consumption and lowering your monthly bills.

Switching to a solar geyser can also protect you from rising electricity costs because as energy prices continue to climb, the savings from solar energy will only increase over time. The initial investment in a solar geyser can also often be recouped within a few short years through reduced utility bills.

  1. Environmental Impact of a Solar Geyser Conversion

A solar geyser conversion is environmentally friendly. They reduce reliance on fossil fuels, decrease greenhouse gas emissions, and contribute to a cleaner, greener planet. By converting to a solar-powered geyser, you’re taking a significant step towards sustainable living.

Environmental Saving

Reducing your carbon footprint is crucial in the fight against climate change. Every household that switches to solar water heating helps mitigate the effects of global warming. Using solar energy also supports the growth of renewable energy markets, fostering innovation and job creation in the green energy sector.

  1. Reliability of a Solar Geyser Conversion

Cape Town enjoys plenty of sunshine throughout the year, making solar water heating a reliable option. Even during cloudy days, a solar geyser with an electric backup ensures you always at least have warm water. This reliability makes solar geysers a practical choice for households seeking a consistent hot water supply.

Having a Hot Shower

Solar geysers are designed to be low-maintenance, further enhancing their reliability. With minimal moving parts and robust materials, these systems can last for decades with proper care. Regular maintenance checks ensure that the system operates at peak efficiency, providing uninterrupted service.

How to Convert Your Geyser to Solar

Assess Your Current Geyser

Before you convert your geyser to solar, you need to assess your current system. Determine its age, condition, and compatibility with solar conversion kits. Older geysers might need to be replaced altogether, while newer ones can often be retrofitted with a retrofit solar geyser conversion kit.

It’s important to evaluate the capacity of your current geyser to ensure it meets your household’s hot water needs. Consider the number of occupants and their daily hot water usage. This assessment will help you choose the right solar geyser system that can handle your specific requirements.

Choose the Right Solar Geyser Conversion Kit

There are various solar geyser conversion kits available, each with different features and price points. Some kits include flat plate collectors, while others use evacuated tubes. Choose a kit that suits your needs and budget.

Research different brands and read customer reviews to find a reliable conversion kit. Look for kits that come with warranties and after-sales support. It’s also beneficial to consult with a professional installer, such as the expert team at Absolute Plumbing Cape Town, who can recommend the best options based on your specific circumstances.

Professional Installation

While it’s possible to attempt a DIY solar geyser installation, it’s highly recommended to hire a professional for the job. Proper installation ensures the system works efficiently and safely. Look for certified solar geyser installers like those at Absolute Plumbing Cape Town to get the best results.

Plumber Installing Solar Geyser

Professional installers who do solar geyser conversion can provide valuable advice on system maintenance and optimisation. They will ensure that the solar collectors are correctly positioned to maximize sunlight exposure. A professional installation includes a thorough inspection to confirm that all components are functioning correctly.

Permits and Regulations

Before proceeding with the installation, check if you need any permits or approvals from local authorities. Some areas have specific regulations governing the installation of solar energy systems, and it is important to ensure compliance with these regulations to avoid any legal issues.

Consult with your installer to understand the permitting process and any associated costs of a solar geyser conversion. They can assist in obtaining the necessary permits and ensure that the installation meets all safety and building codes. 

The Importance of Maintenance of Solar Geysers

Regular Inspections

To keep your solar geyser working efficiently, regular inspections are crucial. Check for any leaks, corrosion, or damage to the solar panels and other components and address any issues promptly to avoid costly repairs later.

Cleaning

Solar panels on a solar panel geyser can accumulate dust and debris, reducing their efficiency. Clean the panels regularly to ensure they capture as much solar energy as possible. Use a soft brush and mild detergent to avoid scratching the surface. It’s advisable to schedule cleaning sessions at least twice a year or more frequently if you live in a dusty area.

solar geyser conversion - cleaning

Professional Servicing

It’s a good idea to have your solar geyser serviced by a professional at least once a year. They can perform a thorough inspection, clean the system, and make any necessary repairs. Professional servicing ensures that your system operates at peak efficiency and extends its lifespan.

A professional technician can also update you on any new technologies or improvements that can enhance your solar geyser conversion system’s performance. Regular servicing includes checking the pressure relief valve, ensuring proper insulation, and verifying the functionality of the backup heater. These steps help maintain the safety and efficiency of your solar geyser.

Monitoring System Performance

Install a monitoring system to track the performance of your solar geyser. These systems provide real-time data on energy production, water temperature, and system efficiency. Monitoring helps you identify any performance issues early and ensures that your system is operating optimally.

Solar Geyser Conversion by Absolute Plumbing Cape Town

Converting your geyser to a solar-powered system is a smart choice for eco-conscious living, offering long-term cost savings, reduced environmental impact, and reliable hot water. Whether you opt for a flat plate or evacuated tube system, a solar geyser conversion is an investment that benefits both your household and the planet. Ready to make the switch? Contact Absolute Plumbing Cape Town today for expert advice and professional installation. Our experienced team will guide you through the process, ensuring you choose the best solar geyser solution for your needs. Start your journey toward sustainable living with Absolute Plumbing Cape Town!