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📊 Try Smart Calculator ⚖️ Detailed ComparisonAnswer: V-Guard TRU HOT PRO works at 60-70% efficiency on cloudy days using diffused sunlight. Coimbatore gets 300+ sunny days per year, so cloudy days are rare. The insulated glass-lined tank retains heat for 24+ hours. All V-Guard models include backup electric heater for fully overcast days.
Answer: In Coimbatore's strong sun, V-Guard solar water heater heats water to 60-70°C within 3-4 hours of morning sunlight. Water is hot by 10-11 AM and stays hot till next morning in the insulated tank. No electricity needed — completely free hot water all day.