The solar water heaters are an efficient way of domestic water heating that utilises solar energy to function. This advanced heating technology is preferred for its energy and cost-saving ability while lowering carbon emissions.
Solar water heaters are further classified into different types. Homeowners can choose a type based on their needs and other factors. However, selecting a type of heating system can be a complicated decision. Before you invest, you need to take into consideration some important factors and requirements.
Here, we will discuss in detail solar water heating technology and help you decide which one is the best solar water heater for your home. Let’s get started!
How a Solar Water Heater Works
A solar water heater collects sunbeams in the form of solar collectors, often on rooftops, and turns them into heat. The heat is transferred to hot water held in an insulated tank. The heated water is stored and can be used immediately for bathing, washing, or any domestic use.
In contrast to electricity or gas heaters, a home solar water heater does not utilise fossil fuels and operates purely based on renewable resources. This, in addition to saving you electricity money, reduces your home’s carbon footprint too.
Types of Solar Water Heaters
Being aware of various types of solar water heaters allows you to decide better. So, let us discuss the most popular ones from the market:
1. Flat Plate Solar Water Heater
Flat plate solar water heater is one of the oldest and most tried technologies. It is a dark-colored flat absorber plate, which is housed in a glass-covered box. Copper tubes are embedded in the plate, and as the sun’s rays heat the plate, the water in the tubes also gets heated. This type of system is ideal for houses in regions with regular sunlight and average water usage.
2. ETC Solar Water Heater (Evacuated Tube Collector)
The ETC solar water heater employs several glass tubes to collect solar energy. Each of the tubes is composed of a vacuum-sealed inner and outer glass coating to prevent heat loss. These are most suitable for cold weather conditions and areas with reduced sunlight in winter.
3. Rooftop Solar Water Heater
The rooftop solar water heater is a common name for equipment fitted on the rooftop or terrace top. Flat plate and ETC types can be mounted on the rooftop based on space, tilt, and requirement of water. These are Ideal for urban housing, hotels, hostels, or apartments where rooftop access exists.
4. Solar Panel Water Heater (PV-T Systems)
Although less used in residential applications, solar panel water heaters (photovoltaic-thermal systems) integrate standard solar panels with water heating. The hybrid systems produce electricity and heat water at the same time. This system is most suitable for larger installations such as commercial or industrial locations.
Which Is the Best Solar Water Heater for Home Use?
There is no one-size-fits-all solution. The most effective solar water heater varies based on a couple of practical considerations:
1. Climate
If you reside in a cold or hilly area, an ETC solar water heater works better by holding heat even during low sunlight. For hot and sunny climates, flat plate solar water heaters are very efficient and longer-lasting in the long run.
2. Family Size
A small family of 2–3 persons might be capable of housing a 100 LPD system, whereas 4–5 members of a family might need a 150–200 LPD system. Large households or water-intensive users may choose bigger units so that they do not fall short of hot water.
3. Space Availability
Solar water heaters take roof space well exposed to sunlight—preferably south facing for maximum efficiency. Shaded or restricted roofs will impact performance, so it’s always best to check your roof angle and dimensions before making a choice of model.
4. Budget and Maintenance
Systems involving flat plates are more expensive in the short run but are strong and need less maintenance in the long run.
Benefits of Installing a Solar Water Heater
Here’s why you should switch to a solar water heater:
- Lower your electricity bills by up to 70%: Solar water heaters use the sun, not electricity, so you can lower your energy bills by a great deal each month.
- Lower your carbon footprint: By utilising solar power rather than fossil fuels, you reduce your footprint on earth and help make the world a cleaner place.
- Enjoy hot water even in remote/off-grid locations: No electric connection? No worries. These systems perform just fine in rural or off-grid areas with enough sunlight.
- Long-term return on investment: Although the initial cost may seem high, the long-term savings more than compensate for it—payback is typically a few years at most.
- Low operating and minimal maintenance costs: These types of systems use minimal or no maintenance after being installed and charge no monthly electricity or fuel bills, thus proving to be economical.
- Increase the value of the property: Getting a solar water heater fitted into your home imparts to your home a special charm and makes your property more valuable in the resale market.
Takeaway
Choosing the best solar water heater for home isn’t just a question of hot water—it’s a question of being smart and environment friendly. Be it a flat plate, an ETC, or a rooftop solar water heater, it all comes down to working with a brand that’s got your back.
Inter Solar Systems brings innovation, experience, and local know-how together to provide you with custom solutions that endure. So, if you’re ready to break free from the grid and begin investing in clean energy, we’re here to assist.
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Frequently Asked Questions
1. Which solar water heater is best for Indian homes?
It depends on your region. Flat plate heaters work great in sunny areas, while ETC models perform better in colder zones.
2. How long does a solar water heater last?
With proper maintenance, most solar water heating systems last between 15 to 20 years.
3. Can I use solar water heaters during the rainy season?
Yes, they still work with diffused sunlight. Plus, many systems come with electric backup options.
4. What size solar water heater do I need?
Usually, a 100–200 LPD water heater system is ideal for a family of 3–5 members.
5. Is after-sales service available with Inter Solar Systems?
Absolutely. We offer professional solar water heater service across our entire product range.