A solar water heater is a cost-effective as well as renewable resource available for heating water in your homes. It uses a solar thermal collector and converts the solar energy into heat. It is a great option if you want to save on your electricity bill and also contribute to the betterment of the environment as it reduces the annual energy costs of heating or preheating your water by at least 50%.
Solar water heaters are devices used to heat water by absorbing energy and heat from the sun and directing it into the water.
Since they do not need any additional energy source other than sunlight, they are ideal for heating water for a variety of uses, including cooking, cleaning and even water swimming pool.
We have done comprehensive list of the best solar waters heater in India to install at your home along with buyer’s guide to make wise purchase.
1.Supreme Solar 200 LPD Solar Water Heater
Supreme as a company produces several types of water heaters. The heater is simple and perfect for Indian households it has a capacity of 200 liters and is best suited for medium-sized families.
One of the best features of this solar water heater is the quality coating it has. It promotes better absorption of sunlight, which makes it faster than other models of the same range.
It is made with high-grade materials, this solar heater is one of the durable options you will find. The solar glass provided is both impact and scratch-resistant.
2.Supreme Solar Solar Water Heater
3.GreenLife GI Solar Water Heater
GreenLife has been producing water heaters for a long time. It has a capacity of 100 liters. This solar water heater comes with PUF insulation which keeps the heated water for a long time.
It is durable and remains well-maintained even in harsh weather conditions. It uses toughened glass in pipes, which remain assured about quality. One has to take timely care to make it last longer. The manufacturer offers 5 years’ warranty on its manufacturing defects.
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4.Mandhata Inventions Solar Water Heater
Another on the list of best solar water heater in India is Manddhata Solar Water Heater which is a long-lasting and efficient water heater. These systems work on solar technology and have battery backups to function even during night. It offers an affordable and efficient way to enjoy hot water through this solar water heater at all times.
This heater has a large stainless steel inner tank with superior quality PUF insulation. Also, this will let you save a huge amount on electricity bills. It is eco-friendly that prevent emission of 1.5 ton of carbon dioxide per year.
5.Megapower Solar Water Heater
MegaPower 250 liter is one of the finest solar water heaters you will get in the market. With 304 liters of inner tank capacity, it makes an excellent choice for larger families.
The solar water heater can keep the water temperature high even during chilly nights. This is made possible with the high injection PUF insulation. To protect it from corrosion, the outer tank is galvanized and pre-coated. This makes the device more durable and long-lasting. It is also provided with a stand to hold up the system.
This Solar Water Heaters keep water hot for more than 48 hours. It has highly efficient 3 layers, 3 targeted, tube dimension is 58/1800mm. This is our fourth list of best water heater in India.
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6.V-Guard 200-Watt Silicone Solar Water Heater
The V-Guard solar water heater is a strong and powerful water heater that provides you with hot water in your household. It has a silver and blue silicone body and consumes 200 watt of power.
The inner tank is made up of high-grade stainless steel. Unlike FPC solar water heaters, this device needs an assistant tank. However, the air vents are in-built. We will recommend you to get the ISI Electric backup heater so that the heater can also come useful on cloudy days.
7.Sun Zone Solar Water Heater
On the list of best solar water heater in India Sun zone, solar water heater comes next in our list. With a capacity of 250 liters, it is an ideal option for household applications.
It comes with a stainless steel welded inner tank with superior quality PUF insulation that retains the hot water in the tank for a long time. The stainless steel water tank is nicely welded so that there’s no leakage.
The main highlight is that it is an eco-green solar water heater system. It is constructed with premium-grade materials to make it long-lasting. This is our final list of best water heater in India.
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Buying Guide - Best Solar Water Heaters
Solar Water Heater Type
There are generally two types of solar water heaters: Flat Plate Collector (FPC) and Evacuated Tube Collector (ETC).
FPCs are metallic whereas ETCs use glass tubes. The major difference lies in the efficiency of both these heaters. ETC is way more efficient when it comes to the production of heat and that is why it is the best option if you live in chilly or rainy region. There is also less heat loss in ETC. The FPC or flat plate collector are expensive than ETC.
When it comes to cost, FPC is cheaper than ETC. Due to its metallic structure, FPC is stronger than ETC and thus, lasts long. I’d personally suggest you to go for ETC solar water heater because it has great performance.
Size & Capacity
If you have enough space on your terrace or roof, then simply opt for installing a big size. Depending on the size of your family, you have to consider the storage capacity. For instance, to cater the hot water for small family with 2 – 4 people, then choose a passive system with storage tank of 60 – 80 gallon (below 100 liters). For a large family, choose an active system with a large tank of 100 + gallon (more than 100 liters).
The normal drain mechanisms of most models of this type of heater are more than sufficient to employ good flow of water. However, in cold climates, such conventional drain methods won’t fare as well. But, with the help of a drainback system, the collectors are automatically drained whenever the water temperature falls below 3 °C, or when solar energy is no longer being collected.
Pressure pump compatibility
Pressure pump applications for water heaters are required in case of high rise building. Most water heaters available in the market are prone to leak when exposed to high water pressure. V-Guard’s range of water heaters have high pressure withstanding capacity (upto 8kg/cm2) which ensures that they are pressure pump/high rise building compatibility.
Energy efficiency products are cost-effective as well as good for the environment. So, it’s a smart option to go with water heaters which are less power consuming and highly efficient. The energy efficiency of the water heater is indicated by its energy star rating i.e. higher the rating, higher the energy efficiency of the product.
Ordinary solar water heaters only work when the weather is nice and warm outside. However, if you are looking to enjoy consistent performance from your device, try to settle for a dual function device. The dual function guarantees exceptional operation of the device, even when it is not as sunny outside.
If you live in a mild-weathered neighborhood, one that doesn’t experience too much heat nor extreme coldness, then this won’t be much of a factor in your decision. But, if you live in a region where things can easily get cold, freezing even, then getting a unit that has anti-freezing capabilities would be ideal.
Brass vs. plastic drain valves
These are situated near the base of the water heater for a garden hose that drains the heater. Look for brass drain valves, which are more durable than plastic.
Although you will find many inexpensive solar heating models from lesser-known brands, we recommend that you choose brands that you already know. This not only confirms the reliability of the product but also ensures that the device lasts longer than the low-budget variants.
A few well-known brands are Racold solar water heater, Tata Power solar geyser, Supreme solar water heater, Havells solar water heaters, V-guard solar water heaters, EMMVEE solar water heater.
Types of Solar Water Heaters
Active Systems comes in two types- Direct Circulation Systems and Indirect Circulation Systems.
Direct Circulation Systems- Where water is heated directly into solar collectors and circulating in your home. These systems pump water from storage to collectors during sunny hours. These units come with automatic controllers to sense the sunlight.
Indirect Circulation Systems- Indirect systems are heating mechanism where solar energy are directly transferred. It is done with the help of heat transfer fluids. The systems are ideal for extreme cold and freezing conditions, as the fluid mixture – usually antifreeze – prevents water from freezing.
Passive solar heaters do not use pumps but rely on gravity and the tendency of water to circulate when heated. The passive systems are also available in two types- Integrated systems and Thermosyphon Systems.
Integrated systems- These units are ideal for the areas where temperature doesn’t fall below zero. They are simple installations consisting of a tank and universal isolation except for one side facing the sun. Despite being essential, they serve their purpose in areas that see lots of sunlight and for people who need hot water mainly during the day or in the evening.
Thermosiphon Systems- These systems heat water or an antifreeze fluid, such as glycol. The fluid rises by natural convection from collectors to the storage tank, which is placed at a higher level where no pumps are required. In thermosiphon systems, fluid movement, and therefore heat transfer, increases with temperature, so these systems are most efficient in areas with high levels of solar radiation.
Advantages and Disadvantages of Solar Water Heaters
Advantages of Solar Water Heating
- It is a renewable and clean energy source.
- Efficient and reliable source of water heating
- They are efficient. Approximately 80% radiation is turned into heat energy.
- It requires basic fittings and a one time investment and after that its free for up to 20 years.
- These systems are easy to install and require very little maintenance.
Disadvantages of Solar Water Heating
- The system does not work in cloudy, rainy, and foggy days
- Sufficient roof space is required to install them
- It works only when solar energy is available, which means solar water heaters require direct sunlight for its functioning
- It heats only in day time, however if the storage tank is well insulated, heated water can be stored and used even at night.
FAQs[ Best Solar Water Heater In India ]
Q.What is a Solar Water Heater?
Ans: Solar water heaters are devices used to heat water by absorbing energy and heat from the sun and directing it into the water. These are great ways to not only reduce your electricity bill, but also reduce your carbon footprint by decreasing your dependence on fossil fuels.
Q.Does a solar water heater work at night?
Ans: Almost every solar water heater that you see in the market comes with a backup unit which is needed during the night time or when there is not enough sunlight. It is usually paired with a backup electric or gas water heater, which serves two purposes. One is heating the water on days that don’t provide enough sunlight. The second purpose is to augment boiling the water when it is not hot enough.
Q.Does solar thermal work on cloudy days?
Ans: Solar thermal panels use either the heat of the sun or sunlight to generate energy, but they do not require bright sunlight to operate, meaning that they will still heat your water on cloudy days. However, in general the greater the intensity of light the better.
Q.Does solar water heater need electricity?
Ans: No electricity is required for any operation in solar water heating systems. However, in case a backup heater is provided to take care of hot water requirements during cloudy days, electricity will be required.
Q.How much roof space does a PV system need?
Ans: A typical solar panel of 200Wp will measure about 17 square feet. Depending on installation factors, the required square footage of roof space will be somewhat larger than simply the area of the panels. A typical solar panel of 200Wp will measure about 17 square feet. Depending on installation factors, the required square footage of roof space will be somewhat larger than simply the area of the panels.
Q.What happens if one of the solar tubes is broken?
Ans: The tubes are exceptionally strong. However, if one is broken, it can be easily replaced at a low cost. Replacement tubes are available through your local dealer.
Q.How long will a solar panel system last?
Ans: Solar panels are known to last 40 years or longer. Typical guarantees of a solar panel include five years workmanship and materials warranty and a 20-25 year performance warranty. The typical PV panel performance warranty will guarantee 90% of rated production for 10-15 years, and 80% for 20-25 years. Solar panels are designed to withstand hail, severe wind and weather conditions assuming proper installation.
Solar water heater is one of the great investments that you can make. With the perfect buying guide and some best solar water heaters in India, you can definitely make the best decision as per your requirement and budget. Also, it’s time to purchase the eco-friendly portable solar water heater not only to save on your electricity bill but also to save the earth.
The above mentioned solar water heaters are of course the versatile, and efficient solutions for your homes to get hot water without using electricity. So pick the one and get fulfilled with ready hot water for all your convenience.