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ExploreTypical solar water heaters products
ETC solar water heatersFPC solar water heatersDomestic solar heatersCommercial solar heating systemsSolar structures
Typical products for this category, not a claim about any one company’s range.
What are solar water heaters?
Solar water heaters use sunlight to heat water for homes, hotels, hostels and industry. Evacuated-tube (ETC) collectors work well across climates and with hard water if maintained, while flat-plate (FPC) collectors are rugged and suit pressurised systems. Rajkot has many makers of both. Quality shows in the tank, the collector and the installation. A solar heater is a long-term purchase, so installation and water quality matter as much as the product. Ask the supplier to survey the roof, check water hardness, and explain maintenance such as cleaning tubes and draining sediment, so the system keeps delivering as it ages.
How to choose
- Size the system by daily hot-water use, with litres per person or per room as the starting point.
- Choose the collector. ETC is common for domestic use; FPC suits pressurised commercial systems and some water conditions.
- Check the inner tank material and insulation thickness, since heat retention overnight depends on it.
- Ask about the water quality at your site. Hard water scales tubes and tanks and needs a plan.
- Look for approvals recognised for solar water heaters and ask the supplier which apply.
- Confirm the warranty on the tank, the tubes or collectors, and the fittings, and who services the system.
- Plan the installation: roof strength, tilt, shading, a stand and an electric backup for cloudy days.
- Check the roof and the plumbing: load-bearing capacity, direction and tilt, shading by trees or buildings, and how hot-water pipes will be routed and insulated.
Specifications to confirm with the supplier
| Specification | What to ask |
|---|---|
| Capacity (litres per day) | Rated daily output and the conditions it assumes. |
| Collector type | ETC or FPC, tube or plate material and number. |
| Tank material and insulation | Inner tank grade and insulation thickness. |
| Pressure rating | Whether the system is pressurised or non-pressurised. |
| Backup heating | Electric element or other backup and its control. |
| Warranty and service | Terms by component and local service coverage. |
| Installation requirements | Roof space, tilt, stand and plumbing connections needed. |
Where it is used
- Renewable EnergyHot water for homes, hotels, hostels and industrial processes.
- Consumer ProductsDomestic water heating as an alternative to electric geysers.
Frequently asked questions
ETC or FPC solar heater?
ETC systems are common and economical for domestic use; FPC systems are robust and suit pressurised commercial installations. Water quality and budget guide the choice.
What size do I need?
Estimate daily hot-water use per person and multiply by household size, then add a margin. A supplier can confirm the capacity for your site.
What happens on cloudy days?
Most systems include an electric backup element or connection to another heater for cloudy periods.
How long does a solar water heater last?
Life depends on water quality, installation and maintenance. Ask for warranty terms by component and follow the cleaning advice.
Is government approval available for solar heaters?
Recognised approval and testing exist for solar water heaters. Ask the supplier which apply to the product and request the certificate.