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Hot water is one of the heaviest household loads, and one of the quickest solar paybacks.
Image: Thermal solar panel on roof by Barelyhere, CC BY-SA 4.0, via Wikimedia Commons.
Heating water with electricity is expensive, and Raipur's winters mean many homes do it every morning. A solar water heater replaces most of that energy with sunshine. This guide to a solar water heater in Raipur covers collector types, sizing by litres per day, costs, hard-water care and payback, for homes, hostels and hotels.
Quick answer: choose about 25 to 30 litres per person per day, expect a payback of two to four years and descale yearly.
| Type | Strengths | Cautions |
|---|---|---|
| Evacuated tube collector (ETC) | Efficient in cool weather; widely available; lower cost | Tubes can scale in hard water; fragile in hail |
| Flat plate collector (FPC) | Robust; pressure-capable; durable | Higher cost |
| Household | Need | System |
|---|---|---|
| Couple | 50 - 80 LPD | 100 LPD |
| Family of four | 100 - 150 LPD | 150 - 200 LPD |
| Family of six | 200 - 250 LPD | 250 - 300 LPD |
| Hostel or hotel | 500+ LPD | Commercial system by occupancy |
A geyser heating 120 litres a day uses roughly 5 to 6 units a day. At a typical domestic tariff in higher slabs, that can be Rs 9,000 to 12,000 a year. A solar heater supplying most of it costs Rs 30,000 to 40,000 and saves Rs 8,000 to 10,000 a year after backup use, giving a payback of about three to four years. Compare with an electric geyser in solar water heater vs electric geyser.
The two complement each other. A water heater removes a heavy morning load, and photovoltaics cover the rest. If roof space is limited, choose the one with the faster payback for your usage. See solar in Raipur.
Where hot-water use is large, payback is even faster. See solar for hotels and restaurants and solar water heater in Raipur: price, sizing and savings.
A family of five replaces two geysers with a 200 LPD solar heater costing Rs 36,000. Their geysers used about 1,500 units a year. At Rs 7 a unit, that is Rs 10,500. The solar heater cuts it by about 85 per cent, saving about Rs 8,900 a year. Payback is about four years, and the heater lasts 10 to 15 years with care.
| Mistake | Result | Better approach |
|---|---|---|
| Undersizing to save money | Cold water by evening | Size by litres per person |
| Ignoring hard water | Scaling and poor performance | Treatment and yearly descaling |
| Shaded collector | Low output | Unshaded south-facing placement |
| No backup element | No hot water on cloudy days | Include electric backup |
| Long uninsulated pipes | Heat loss | Short, insulated runs |
Choose a solar water heater in Raipur by litres per person per day, not by the brand label. A common rule is 30 to 50 litres of hot water per person per day.
| Family size | Suggested capacity | Typical collector area |
|---|---|---|
| 2 people | 100 litres per day | About 2 sq m |
| 4 people | 150 - 200 litres per day | About 3 - 4 sq m |
| 6 people | 250 - 300 litres per day | About 5 - 6 sq m |
Often about two to five years against an electric geyser, depending on family size, tariff and system cost.
Output drops on cloudy days; an electric backup covers it.
Often yes; see solar water heater vs geyser cost and best solar water heater and water pump.
If you are planning a project, read solar in Raipur first, then compare providers using the top 10 solar companies in Raipur shortlist method and the best solar company in Raipur scorecard. Money questions are covered under solar subsidy in Raipur and PM Surya Ghar Yojna in Raipur, delivery under solar installation in Raipur, and local conditions under solar Raipur. Gupta Agro Solar is a solar company in Raipur that will survey your roof free. You can also browse the solar blog, our solar services, the Gupta Agro Solar home page or contact us for a free survey.
Plan about 25 to 30 litres per person per day: 100 LPD for a couple, 150 to 200 LPD for a family of four to five.
Domestic systems commonly cost around Rs 30,000 to 40,000 for 150 to 200 LPD, varying by type and brand. Get a written quotation.
Output falls on overcast days, so an electric backup element covers them.
Hard water scales tubes and tanks. Use suitable designs, treatment and yearly descaling.
Commonly two to four years for households that use hot water daily with an electric geyser.
Visit C-29, Sector 3, Devendra Nagar, Raipur, Chhattisgarh 492001, call 083051 31420 or send your details online for a free site survey and a written quotation with the subsidy worked out.
Free survey, litres-per-day sizing and a written quotation.