Which is better, ETC or FPC solar water heater?

ETC is cheaper, heats fast, and suits soft-water areas and colder winters. FPC costs more but is sturdier and handles hard water and high pressure better. Choose based on your water quality, climate, and budget rather than price alone.

What size solar water heater do I need for a family of 4?

A 200 LPD system usually suits a family of 3–4, allowing roughly 50–60 litres of hot water per person per day. A family of 5–6 is generally better served by a 300 LPD unit.

How much can a solar water heater save on my electricity bill?

Savings depend on usage, tariff, and sunlight, but many homes cut a large share of their geyser cost and see payback in about 2–4 years. Use a savings calculator with your own bill for a realistic estimate.

Does a solar water heater work in winter and monsoon?

Yes, though less efficiently. On cloudy or rainy days output drops, so most units include an electric backup element. You will still save on most sunny days across the year.

Is there a government subsidy for solar water heaters in 2026?

The PM Surya Ghar subsidy is for rooftop solar panels that generate electricity, not water heaters. Some states run their own incentives through their nodal agency, so check locally and verify on the official portal (indicative — verify current).

How long does a solar water heater last?

A good unit typically lasts 15–20 years with light maintenance. Clean the tubes or plate once or twice a year, descale in hard-water areas, and replace the backup heating element if it fails.

Solar Water Heater Price in India 2026: ETC vs FPC

If you are tired of a heavy winter electricity bill from your geyser, a solar water heater is one of the simplest ways to cut it. In 2026, a home solar water heater in India costs roughly ₹15,000 to ₹50,000 (indicative 2026 — verify current), depending on the capacity you pick and whether you choose an ETC or FPC type. The sun heats your water for free, so once the unit is paid off, your hot water is close to zero-cost for years.

Let us break down the prices, the two main types, the real savings, and how to buy well.

Solar water heater price in India (2026): quick overview

Price mainly depends on two things: capacity in LPD (litres per day) and collector type (ETC or FPC). Bigger capacity means more hot water for more people. LPD roughly maps to family size — around 50–60 litres of hot water per person per day is a common rule of thumb.

Here are indicative price bands for a standard domestic system. Treat these as starting points, not fixed rates.

Capacity (LPD)	Suits (people)	ETC price (indicative 2026)	FPC price (indicative 2026)
100 LPD	2–3	₹15,000–₹22,000	₹22,000–₹30,000
200 LPD	3–4	₹25,000–₹35,000	₹35,000–₹48,000
300 LPD	5–6	₹35,000–₹50,000	₹50,000–₹70,000

All figures above are indicative 2026 — verify current. Actual prices vary by brand (for example Racold, V-Guard, Supreme, Tata Power Solar, Kotak), city, roof height, plumbing distance, and whether you need a pressurised model or extra piping. Installation and a stand may add a few thousand rupees on top.

To see real numbers for your home, it is worth getting 3 free quotes from local installers and comparing them side by side. Prices for the same 200 LPD unit can differ a lot between two vendors in the same city.

ETC vs FPC: which type suits you?

ETC (Evacuated Tube Collector)

ETC uses rows of glass vacuum tubes. It is the more affordable and more common choice for Indian homes. It heats up fast, works reasonably well even on cloudy days and in colder northern winters, and is easy to service tube-by-tube. The catch: the glass tubes can crack from hail or falling objects, and in very hard water areas they can scale up faster if not cleaned.

FPC (Flat Plate Collector)

FPC uses an insulated flat metal absorber plate under glass. It is sturdier, longer-lasting, and better for hard water and high-pressure plumbing (useful if you want a strong shower or have an overhead tank far away). It costs more and is a little slower to heat in peak winter, but many buyers pick it for durability and low fuss.

Feature	ETC	FPC
Price	Lower	Higher
Hard-water tolerance	Moderate	Better
Cold-climate heating	Good	Slightly slower
Durability	Glass tubes can crack	Robust metal build
Pressure handling	Limited (non-pressurised common)	Good (pressurised models)
Best for	Budget buyers, soft water	Hard water, hilly/cold or high-pressure homes

A quick tip: if your area has very hard water (common in parts of Rajasthan, Gujarat, and Telangana), ask specifically about a model rated for hard water, or plan for a softener. Otherwise scaling can slowly reduce heating over years.

Running-cost savings vs an electric geyser

This is where a solar water heater earns its keep. An electric geyser used daily by a family can quietly add a big chunk to your monthly bill, especially in winter. A well-sized solar unit can replace most of that.

As a rough, illustrative example: a family that spends around ₹8,000–₹15,000 a year running electric geysers could save a large share of that with a 200 LPD solar unit (indicative — depends on your usage, tariff, and sunlight). On many homes that means a payback of about 2–4 years, after which the hot water is nearly free for the rest of the system’s life.

To estimate your own numbers, plug your family size and current bill into the savings calculator before you buy — it gives a far more honest picture than any brochure. Do remember: in cloudy monsoon weeks you will still lean on the electric backup element, so savings are not 100%, but they are usually substantial.

Lifespan and maintenance

A good solar water heater typically lasts 15–20 years, with the tank and collector often outliving the backup heating element. Maintenance is light:

Clean the tubes/plate once or twice a year (dust and bird droppings cut efficiency).
Check the tank and joints for leaks or scaling annually.
Descale if you are in a hard-water area.
Replace the backup heating element if it fails, usually a small cost.

Look for a solid warranty — many brands offer around 5 years on the tank/collector, with shorter cover on electrical parts. Always confirm what is covered and for how long, in writing.

Buying tips

Match LPD to your family, not to the biggest tank the salesman wants to sell.
Compare ETC vs FPC for your water quality and climate, not just price.
Get 3 free quotes and check if installation, stand, and piping are included.
Ask about pressurised vs non-pressurised if you want strong shower pressure.
Check state or local schemes — some states run their own incentives for solar water heaters through their nodal agency; ask your vendor and verify on the official portal.

One clear note on subsidy

The PM Surya Ghar: Muft Bijli Yojana subsidy is for rooftop solar panels that make electricity, not for solar water heaters. So do not expect that ₹30,000/kW central subsidy on a water heater. New PM Surya Ghar registrations also closed on 6 June 2026, so for solar panels you would track your status or watch for the next intake — but that is a separate product from the water heater discussed here.

A solar water heater remains one of the cheapest, most reliable ways to cut your hot-water bill in India. Pick the right capacity, choose ETC or FPC for your water and climate, compare a few honest quotes, and it should pay for itself well before it wears out.