Affordable, Reliable, and Energy-Efficient Solar Water Heaters in Kenya.

Solar Water Heaters in Kenya. At Riisun Solar Energy Experts, we are proud to be one of the leading suppliers and installers of solar water heaters in Kenya. We provide high-quality, energy-efficient, and long-lasting solutions that help homes, businesses, and institutions across the country switch to clean, cost-saving solar energy. We specialize in a variety of solar water heaters including Seven Star Solar Water Heaters, one of the most trusted solar brands globally, known for its outstanding durability, efficiency, and modern design. Whether you are looking for pressurized or non-pressurized solar water heaters, we have a wide range of options to suit different water consumption needs and budgets.

Non-pressurized solar water heaters vs pressurized solar water heaters.

Kenya’s solar water heating market offers two primary system types to suit different needs and budgets.

Non-pressurized solar water heaters.

Non-pressurized solar water heaters are the most economical choice, perfect for single-story homes and properties with stable water pressure. These gravity-fed systems mount on rooftops, requiring no electrical components to deliver hot water, though they may need structural reinforcement and typically offer lower water pressure.

Pressurized solar water heaters.

Pressurized solar water heaters provide superior performance with consistent pressure throughout the plumbing system, making them ideal for multi-story buildings and commercial establishments. Their durable tanks can be installed at ground level or anywhere convenient, offering greater flexibility in system placement compared to non-pressurized models.

How Much Do Solar Water Heaters Cost in Kenya?

Solar water heater prices in Kenya vary based on system type, capacity, and brand quality. Homeowners compare evacuated tube collectors (better for cloudy conditions) versus flat-plate collectors (more affordable), with 100L–200L systems ideal for small families and 300L+ commercial systems for hotels/apartments. Imported brands like Duda Solar may cost more than local options like Solahart, but offer longer warranties. Installation fees typically include piping, insulation, and KEBS-certified fittings.

RiiSun’s Take:
We provide free cost-benefit analysis, comparing solar water heater prices and technologies to match your budget and hot water needs. Our quotes include installation, after-sales service, and 5-year warranties on tanks and collectors.

How Much Can I Save with a Solar Water Heater?

Switching to solar cuts electricity bills by 40–70%, as water heating accounts for ~30% of home energy use. A 150L solar heater saves ~KES 3,000 monthly, achieving ROI in 2–5 years. Large-scale installations (e.g., hostels, hospitals) recover costs faster due to higher consumption. Net metering further boosts savings by exporting excess power to the grid.

RiiSun’s Take:
Our custom ROI reports project your exact savings, accounting for family size, usage patterns, and backup requirements. We optimize systems for maximum efficiency, ensuring faster payback periods.

Do Solar Water Heaters Work in Cold/Rainy Seasons?

Modern solar thermal systems retain heat for 72+ hours, but prolonged clouds may require electric or gas boosters. Evacuated tubes outperform flat plates in cold climates (e.g., Limuru) due to vacuum insulation. During heavy rains, heat retention tanks maintain water at 40–60°C, with boosters activating automatically if temps drop.

RiiSun’s Take:
We install hybrid solar water heaters with smart boosters that activate only when needed, saving energy. Our weatherproof designs include frost protection for high-altitude areas.

Are All Solar Water Heater Brands Reliable?

Cheap, uncertified systems often leak, rust, or fail within 2 years. Trusted brands like Dayliff, Chromagen, and Bosch use stainless-steel tanks, copper heat exchangers, and KEBS-approved components. Look for 5+ year warranties and ISO-certified manufacturers to avoid substandard imports.

RiiSun’s Take:
We exclusively supply top-tier solar water heaters with 10-year tank warranties and annual maintenance. Our installations comply with EPRA standards.

Is Solar Water Heating Mandatory in Kenya?

EPRA regulations require solar water heaters for buildings using 100+ litres daily (homes, hotels, schools). Non-compliant properties face KES 1M fines or disconnection of electricity. Counties like Nairobi and Mombasa enforce strict inspections for new constructions and renovations.

Solar Water Heater Price Comparison in Kenya (2023)

FAQS ABOUT SOLAR WATER HEATERS IN KENYA.

What is a solar water heater?

A solar water heater is a system that uses solar energy to heat water for domestic, commercial, or industrial use.

How does a solar water heater work?

A solar water heater captures sunlight using solar collectors and transfers the heat to water stored in a tank.

What are the main types of solar water heaters available in Kenya?

The main types are non-pressurized solar water heaters, pressurized solar water heaters, split solar water heaters, integrated solar water heaters, vacuum tube solar heaters, and flat plate solar heaters.

What is the difference between pressurized and non-pressurized solar water heaters?

Pressurized systems provide water at high pressure, ideal for modern bathrooms, while non-pressurized systems rely on gravity and provide low-pressure water.

Are solar water heaters effective during cloudy days?

Yes, solar water heaters can still heat water on cloudy days, though efficiency may be lower.

Do solar water heaters work at night?

Solar water heaters do not collect energy at night but can store hot water for use through well-insulated storage tanks.

How long does the water remain hot in a solar water heater?

Water can remain hot for up to 72 hours in a well-insulated solar storage tank.

Is it possible to use electricity with a solar water heater?

Yes, most solar water heaters in Kenya come with electric backup heaters for cloudy days or increased demand.

How much does a solar water heater cost in Kenya?

The cost varies depending on the size and type, typically ranging from KSh 80,000 to KSh 300,000.

Is a solar water heater mandatory in Kenya?

Yes, the Energy and Petroleum Regulatory Authority (EPRA) requires buildings with a hot water demand of more than 100 liters per day to install solar water heating systems.

How long does it take to install a solar water heater?

Installation can take between 4 to 8 hours, depending on the complexity of the system.

What maintenance is required for solar water heaters?

Solar water heaters require periodic cleaning, checking for leaks, and inspecting valves and insulation.

Can solar water heaters withstand hail or heavy rain?

Yes, most high-quality solar water heaters are designed to resist hail, heavy rain, and strong winds.

What is the lifespan of a solar water heater in Kenya?

A good quality solar water heater can last between 15 to 20 years with proper maintenance.

Can I install a solar water heater on any type of roof?

Yes, solar water heaters can be installed on most roof types, including flat, tiled, and iron sheet roofs.

How much roof space is needed for a solar water heater?

Typically, 2 to 4 square meters of roof space is required for the solar collectors.

Can I use a solar water heater in a high-rise building?

Yes, but pressurized solar water heaters or systems with booster pumps are recommended for high-rise buildings.

What size of solar water heater do I need for my home?

The size depends on the number of users; typically, a 150-liter system serves 3 to 4 people.

How efficient are solar water heaters compared to electric geysers?

Solar water heaters are more energy-efficient and can reduce water heating costs by up to 80%.

Do solar water heaters work in cold regions of Kenya?

Yes, but in extremely cold areas, systems with antifreeze protection are recommended.

Can I upgrade my existing hot water system to solar?

Yes, existing systems can often be retrofitted to include solar water heating.

What happens if the solar water heater overheats?

Most modern solar water heaters have safety valves and expansion tanks to manage overheating.

Are solar water heaters safe for drinking water?

Yes, if properly installed with food-grade materials, but periodic maintenance is essential.

Do solar water heaters increase property value?

Yes, homes with solar water heating systems are more energy-efficient and attract higher value.

Can a solar water heater supply multiple bathrooms?

Yes, solar water heaters can be sized and configured to supply hot water to multiple bathrooms.

How often should solar water heaters be serviced?

They should be serviced at least once a year to ensure optimal performance.

Are there solar water heaters that don’t need a water pump?

Yes, non-pressurized systems rely on gravity and don’t require pumps.

How does a split solar water heater work?

Split systems have separate collectors and storage tanks, typically used when the roof cannot support the tank.

Are vacuum tube solar water heaters better than flat plate heaters?

Vacuum tube heaters are generally more efficient in colder climates, while flat plate heaters are durable and cost-effective.

Can I install a solar water heater myself?

Professional installation is recommended to ensure safety, efficiency, and compliance with regulations.

How do I choose a reliable solar water heater brand in Kenya?

Look for brands with a proven track record, warranties, local support, and EPRA certification.

Do solar water heaters work with borehole water?

Yes, but if the water is hard, you may need periodic descaling to maintain efficiency.

How do I prevent freezing in a solar water heater?

Use antifreeze in the system or install freeze protection valves if located in cold regions.

Can solar water heaters be connected to washing machines or dishwashers?

Yes, solar-heated water can be used for household appliances that require hot water.

What is the difference between an integrated and a split solar water heater?

Integrated systems combine the collector and storage tank on the roof, while split systems separate them.

Do I need a backup heating system with a solar water heater?

It is advisable to have an electric or gas backup for periods of low sunlight.

Can solar water heaters be used in commercial buildings in Kenya?

Yes, solar water heaters are ideal for hotels, schools, hospitals, and apartment complexes.

How long does it take for a solar water heater to heat water?

On sunny days, it can take 2 to 4 hours to heat a full tank.

What type of pipes are recommended for solar water heaters?

Insulated copper or PPR pipes are typically recommended to withstand high temperatures.

Can I use solar water heaters in areas with frequent power outages?

Yes, especially non-pressurized systems that rely on gravity, which can function without electricity.

Is there a warranty for solar water heaters in Kenya?

Most solar water heaters come with a 5 to 10-year warranty depending on the manufacturer.

How can I increase the efficiency of my solar water heater?

Regular cleaning of the solar collectors and proper insulation of pipes will maintain efficiency.

Do solar water heaters cause roof leaks?

Properly installed systems should not cause roof leaks; professional installation is key.

Are there solar water heaters with temperature controls?

Yes, many systems come with thermostatic mixers or digital temperature controls.

Can I get a solar water heater loan or financing in Kenya?

Some financial institutions offer flexible financing options for solar installations.

Do solar water heaters contribute to carbon footprint reduction?

Yes, using solar water heaters reduces dependence on fossil fuels, lowering carbon emissions.

Can I monitor the performance of my solar water heater remotely?

Some modern systems offer smart monitoring to track water temperature and energy savings.