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Eco-Friendly, High-Efficiency Hot Water Solutions for Homes, Hotels & Industries
Enjoy round-the-clock hot water without worrying about rising electricity bills. V-Guard Solar Water Heaters utilize advanced Evacuated Tube Collector (ETC) technology to absorb maximum solar radiation and convert it into thermal energy with minimal heat loss.
Whether you need a compact 100 LPD system for a 2-person home in Trivandrum or a large 10,000 LPD commercial installation for a hotel, resort, or hospital in Kollam, V-Guard offers reliable, long-lasting solar water heating systems tailored to your needs.
V-Guard ETC solar water heaters use concentric borosilicate glass tubes sealed at both ends with a vacuum in between:
| Feature | Evacuated Tube Collector (ETC) | Flat Plate Collector (FPC) |
|---|---|---|
| Heat Absorption | 360° Circular Absorption: Cylindrical shape ensures sunlight hits perpendicularly all day. | Peak absorption occurs only at noon when sun-rays hit at 90°. |
| Cloudy & Winter Performance | High Efficiency: Works exceptionally well even during cloudy or overcast days. | Performance drops significantly in winter and overcast weather. |
| Heat Loss Protection | Vacuum Sealed: Vacuum layer eliminates ambient heat loss. | Higher heat loss during nighttime. |
| Scaling & Maintenance | Negligible Scaling: Wide tube diameter (58 mm) prevents clogging and allows manual cleaning. | Heavy scaling in narrow copper tubes (12.5 mm) causing efficiency loss. |
| Installation & Repair | Modular & Compact: Requires less roof space; damaged tubes can be replaced individually. | Occupies large roof area; glass breakage requires replacing the entire panel. |
Switching to a V-Guard Solar Water Heater delivers immediate financial savings on utility bills:
| System Capacity | Annual Power Units Saved (kWh) | Annual Savings in Electricity Charges | Equivalent Fuel Savings (LPG) |
|---|---|---|---|
| 100 LPD | 1,395 Units | ₹10,462 / year | 190 kg LPG |
| 200 LPD | 2,791 Units | ₹20,932 / year | 383 kg LPG |
| 300 LPD | 4,186 Units | ₹31,395 / year | 571 kg LPG |
| 500 LPD | 5,581 Units | ₹42,857 / year | 762 kg LPG |
| 1,000 LPD | 13,953 Units | ₹1,04,647 / year | 1,905 kg LPG |
Evacuated tube collectors keep working in the weather that stops flat plate systems, which matters through a Kerala monsoon.
Triple-coated borosilicate tubes absorb diffuse radiation, so you still get hot water when the sky is grey. An ISI electric backup covers prolonged spells.
An SS 304-L inner tank with a sacrificial magnesium anode resists corrosion, and 58 mm tubes resist the scaling that clogs narrow copper pipes.
Yes. The triple-coated borosilicate glass tubes absorb diffuse solar radiation even on overcast days. For prolonged monsoon periods, an optional ISI-marked electric backup heater can be activated.
For domestic non-pressurised systems (100 LPD to 300 LPD), the minimum required overhead cold-water tank height from the roof ranges between 1.3 meters to 1.63 meters depending on the specific model.
Yes. The SS 304-L inner tank includes a sacrificial magnesium anode to protect against galvanic corrosion. Additionally, the 58 mm wide evacuated glass tubes minimize scaling compared to narrow copper pipes.
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