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Money & Energy Saving Solar Water Heaters for Homes

by posted in All About Shopping


Planning to save on monthly energy bills? How about investing in one of the oldest forms of energy-the Sun. We know, the first thought to cross your mind when reading ‘sun energy’ is the solar cells to generate electricity. GreatBuyz has already covered a complete guide on top solar panel manufacturers, but this post is about the solar water heaters.

Winters in India can be equally harsh as the summers (just not for that long!), and a mechanism in place for continuous hot water supply is needed in homes. Since 1891, when Clarence Kemp patented the first commercial solar water heater, these sun power harnessing heaters have gone infinite design and component improvements. Today we have efficient solar water heaters that offer sustainable heating solutions for homes.

Why install a solar water heater?

It’s a futile explanation, but we don’t want to leave any doubts among the readers so that we will state the obvious!

Money-saving on energy bills is one of the prominent reasons why solar water heaters must be installed in every household in India. According to a Department of Energy survey, with solar water heaters, you can save up to 15% electricity or gas bills during winters. Just augment the energy of the sun to have hot water instead of using gas or electricity.

No dependence on electricity is another benefit of solar water heaters. Let’s face it; power cuts are a nuisance throughout the country, especially in suburban and rural areas. Solar water heaters have independent functioning, so power cuts are not a concern.

Selecting a Solar Water Heater

When you are out in the market to buy solar water heaters, it is not going to be an easy task. You have to do some research and understand your requirements to choose the right product. Before buying a solar water heater, you have to consider the budget, type, application, and maintenance of the product.

Size matters

Your lifestyle will have a significant impact on how effective a solar water heater will be for your domestic use. For large families with a high demand for hot water, you will need a water heater with a more prominent collector. Similarly, if you have a nuclear family, a smaller passive solar water heating system will be enough too.

What is your location?

You have to buy a system depending on how much sunlight your area receives. This can be a little tricky to know, which is why here’s an IISC map showing the average annual daylight all over India.

This is the map showing the “Annual average Global insolation map of India showing the isohels and solar hotspots” by the Indian Institute of Science, Bangalore.

If you live in areas like Delhi, Mumbai, Gujarat, Ahmedabad, Gwalior, Bangalore, and Chennai, you can generate a large amount of hot water with a relatively smaller solar water heater. But in colder regions such as Jammu & Kashmir, Himachal Pradesh, extreme North-Eastern India, and West Bengal, a larger solar heater with a large collector will be required.

What is your budget?

Unlike solar photovoltaic cells, solar water heaters are not expensive and offer a much faster return on investment. For a small amount, you can get a large solar water heater installed in your home. Several companies are offering affordable products so that you can look forward to competitive pricing.


Broadly solar water heaters are either active or passive. A powerful heater has an electric pump to circulate the heat-transfer fluid, in which a passive system has no pump. Also, solar water heaters can be open-loop (direct) or closed-loop (indirect). A direct solar water heater circulates the water from the tank through the collector. On the other hand, the indirect solar water heater uses a heat-transfer fluid to collect the heat, which is then transferred to the water in a heat exchanger.

Depending on the mechanism, you have active systems, open-loop dynamic systems, and closed-loop active systems. These systems are more efficient but depend on electricity to circulate water or heat-transfer fluid. Passive systems are less efficient, but they have no electric component, so they are much more reliable and easier to maintain.

Batch Solar Water Heaters-When simple passive systems have two or more storage tanks that are placed in an insulated box with glazed sides, and they are called batch solar water heaters.

Thermosiphon Systems-These systems use the natural convection phenomenon in which warm water rises above the cold water to circulate the water through collectors.
Considering all these parameters, we handpicked the best solar water heaters that you can buy online.

Top 8 Solar Water Heaters

1. Racold Alpha Pro Solar Water Heater

A leading brand of water heaters in India, Racold is a subsidiary of the Ariston group. Ariston Thermo SpA is one of the heating systems manufacturers in the world based in Italy. With a wide range of electrical and solar water heaters on the offer, you will be in safe hands if you buy a solar water heater from them.

Racold Alpha Pro Solar Water Heater
Racold Alpha Pro Solar Water Heater


For our list of the best solar water heaters, we have picked the Racold Alpha Pro that has a unique amalgamation of features. It features the industry-best SS304 L inner tank made from unique weld-free technology. The SS304 is a superior quality material that gives the best anti-chloride performance. With its digital display panel to check the water level, temperature, and a programmable electric backup, the Racold Alpha Pro Solar Water Heater is easily the best solar water heater in India. That is not all; it also has an auto water feed system that has three programmable modes to intake water automatically, on a set time or manually.

Key features:

  • Industry-best SS304 inner tank
  • Digital display panel
  • Auto water feed
  • Suitable for hard water up to 1000 PPM
  • Programmable backup heating
  • Anti-rust body
  • Approximate Price-INR 35,640
  • Capacity-100 Liters


2. Onyx Solar Water Heater

Onyx is one of the unique companies in the solar energy segment that is offering technologically advanced products such as hybrid solar air-conditioning. It brings the innovativeness and unimaginable capability to save power and energy to the solar water heaters it has to offer. The primary focus of Onyx Solar is on corporate and commercial markets, but it has a solar water heater for domestic use as well.

Onyx Solar Water Heater
Onyx Solar Water Heater


If you want solar water heater has a high tolerance to hard water, then we recommend you Onyx Solar water heater. An absolute non-mixing and non-pressure system ensure that the inner tank has a long life even after prolonged exposure to saltwater and hard water from the borewell. Due to its high efficiency evacuated tube collector, this solar water heater can heat water at higher temperatures than usual. The compressed PUF insulated inner tank can keep water hot for more than 24 hours. The inbuilt anti-fogging capability ensures there is never a blockage of any kind.

Key Features

  • Impressive tolerance against hard water
  • Compressed PUF insulated tank to keep water hot for more than 24 hours
  • Easy to install
  • Optimum performance and minimum maintenance
  • Better performance in winter and cloudy days
  • High-Quality stainless steel
  • Approximate Price-INR 44,000
  • Capacity-250 Liters


3. Supreme Solar SS-004 Solar Water Heater

Supreme Solar is a homegrown brand that is based out of Bengaluru and offering affordable solar products and solutions to customers since 2004. The solar water heaters from the brand are known for their practical engineering, which makes them suitable for domestic as well as commercial use.

Supreme Solar SS-004 Solar Water Heater
Supreme Solar SS-004 Solar Water Heater


Supreme Solar Water Heater with a 250 liters tank is an excellent choice for any household in India. Made with the highest quality PUF insulated steel, the PUF coating is an excellent heat absorber and quickly heats the water in the loop. The glass tubes used in this solar water heater are of premium quality with a toughened scratch resistant surface.

Key Features

  • Strong glass tubes
  • PUF coated high-quality steel
  • Higher impact resistance
  • Highly efficient
  • Approximate Price-INR 23,865
  • Capacity-250 Liters

The use of high-efficiency solar cells in this solar water heater is what sets it apart from all the other heaters on the list.


4. Saur Shakti Stainless Steel Water Heater

A homegrown brand of solar products, Sudarshan Saur Shakti Pvt. Ltd., was established in 1989, and today it is the highest-selling brand in the country under the “Sudarshan Saur” label. The company designs manufacture and market solar water heaters, solar electric systems, solar lamps, and solar pumps.

Saur Shakti Solar Water Heater
Saur Shakti Solar Water Heater


Saur Shakti Solar Water Heater is for domestic as well as commercial purposes because of its high energy absorption vacuum tubes. These toughened borosilicate glass tubes were first developed in Germany and Australia and are known for their high efficiency and optimum energy absorption. Because of its specially treated inner container, this solar water heater is durable for years as it is corrosion-resistant.

Key Features

  • High performance due to borosilicate glass tubes
  • Rustproof galvanized iron body
  • Eco-friendly device
  • Optimum functionality
  • Less Maintenance
  • Approximate price-INR 35,000
  • Capacity-300 Liters

Unlike some other models on the list, there is no digital component in this water heater; still, it is viral. The use of galvanized iron makes this solar water heater rust-proof, while the simple design makes it easy to install and drastically lowers the maintenance cost.


5. MegaPower Solar Water Heater

Another major player in the Indian solar energy sector is the Pune based MegaPower. An emerging manufacturer of solar equipment in the country, MegaPower has a wide range of products that include solar water heaters, solar street lights, solar lanterns, solar battery chargers, solar power pack, and solar hoarding lights. Focusing on both commercial as well as domestic markets, MegaPower Solar offers products with different range and affordability.

Mega Power Solar Water Heater
Mega Powe Solar Water Heater


We picked the MegaPower Solar Water Heater because of its quality engineering and efficiency. There are two models on the offer-Evacuated Tube Collector and Flat Plate Collector. For this review, we selected the Evacuated Tube Collector model, which is a compact system ideal for household use. The glass tubes it utilizes for heating water can collect maximum heat from sunlight. The galvanized steel plates used for water tanks are MS powder coated to be rustproof and easily avoid corrosion. This solar water heater can preserve heat for up to 72 hours.

Key Features

  • Stainless steel inner tank
  • PUF coating for heat retention
  • High-efficiency glass evacuated tubes
  • Sturdy and ergonomic design
  • Hailstone resistant
  • Approximate Price-INR 29,900
  • Capacity-250 Liters


6. Suntek Energy Solar Water Heater

Established in 2008, Suntek Energy Systems Private Limited is offering a gamut of products working on solar technology. With an innovative team, the company has gained the expertise to provide solar equipment for residential, commercial, and corporate use that helped it to establish a robust client list in under three years.

Suntek Energy Solar Water Heater
Suntek Energy Solar Water Heater


Suntek Energy Solar Water Heater makes it at the sixth spot in our list of best solar water heaters to buy online in India. The evacuated tube collector system based solar water heater, this product is much more efficient than the flat plat model. It offers high value on money invested and can be used for domestic as well as commercial purposes. The high-quality stainless steel inner storage tank is provided with insulation to be hard water tolerant. This solar water heater can heat water up to the temperature of 60-80 degrees Celsius. Suntek solar water heater helps you not only save on electricity and gas bills but also prevents the emission of 1.5 tons of carbon dioxide every year.

Key Features

  • Compact design
  • Stainless steel PUF coated the inner tank
  • High hard water tolerance
  • Output temperature of up to 60-80 degree Celsius
  • Approximate price-INR 18,900
  • Capacity-100 Liters

Grab the offer now!


7. Sun Zone Solar Water Heater

Sun Zone is a solar equipment manufacturer that specializes in solar water heaters and other solar products. Based out of Bangalore, the company caters to the needs of commercial as well as domestic markets, including hospitals, restaurants, hospitals, malls and corporate buildings.

Sun Zone Solar Water Heater
Sun Zone Solar Water Heater


Another smart choice for eco-friendly water heating needs, the Sun Zone solar water heater has good value for money offering. The stainless steel body is provided with high-quality PUF insulation that makes it a lot more efficient. If you are looking for a solar water heater that not only fulfills all household applications but is also cost-effective, this might be the product you need.

With a capacity of 250 liters, Sun Zone Solar Water Heater is capable of meeting your daily hot water requirements. Due to the high-quality inner tank and outer body, you can rest assured of its durability.

Key Features

  • Stainless steel inner tank
  • PUF insulation for more heat retention
  • Polyester powder coated outer body and stand
  • Rustproof
  • Three Target Selectively Coated Borosilicate tubes
  • Approximate Price-INR 52,438
  • Capacity-250 Liters


8. Intersolar Water Heater

Inter Solar Systems is catering to the needs of customers since 1997 and is regarded as an efficient organization offering solar equipment. Focusing on holistic utilization of solar energy, the company focuses on bringing innovation to its products for a better rate on return on investment by the customers.

Inter Solar Water Heater
Inter Solar Water Heater


If you are looking for a solar water heater for small scale use, the Intersolar solar water heater with 100 liters capacity is the right product for you. Based on the same three-layer evacuated glass tube technology, this water heater can harness the power of the sun to give a continuous supply of hot water for general purpose use such as dishwashing and baths. The stainless steel inner tank is provided with puff insulation for maximum efficiency while the outer body has an anti-rust protective coating.

Key Features

  • Puff insulations of 40-45mm for heat retention
  • High-quality stainless steel inner tank
  • 3-layer EGT technology
  • Approximate Price-INR 17,000
  • Capacity-100 Liters



Solar energy is the need of the hour, not only to save on high electricity and gas bills but also to save our planet that is dying slowing because of global warming. Solar water heaters are a one-time investment that you usually get back within 2-3 years. But the most crucial advantage of this solar equipment is its eco-friendly operation.

When you are out in the market shopping for the best solar water heaters, do not forget to consider the parameters we mentioned above. A much better alternative is to buy the best solar water heaters online. We have listed the best eight solar water heaters that you can buy online.

One Comment

  1. Kumar says:

    Hi great offers here thank you so much

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