Geyser Running Cost Calculator India — Electric vs Solar vs Gas Water Heater
Compare the annual running costs of electric storage geysers, instant LPG gas geysers, and rooftop solar water heaters for your Indian home. Find which saves the most money over 5 years.
Hot Water Usage & Fuel Price Parameters
Convenient, fast heating, but creates heavy peak electrical load during winter mornings.
Lower operational cost than electric, but requires bathroom chimney ventilation and LPG cylinder plumbing.
Free solar energy for 300+ sunny days. Saves ₹8,377 every year.
Install a 150 LPD Rooftop Solar Water Heater for Independent Houses
For independent homes, a solar water heater eliminates 85% of water heating costs. For apartments where roof access is restricted, upgrade to a BEE 5-Star Storage Geyser with high polyurethane foam (PUF) insulation.
Frequently Asked Questions
Q:How much electricity does a 25 Litre electric geyser consume per month in India?
A standard 25L electric storage geyser has a 2,000 Watt (2 kW) heating element. It takes approximately 25 to 30 minutes to heat the water to 50°C, consuming around 0.9 to 1.0 unit (kWh) per hot bucket or shower. For a family of 4 taking daily hot baths, it consumes around 100 to 120 units monthly — costing approximately ₹800 to ₹1,100 per month at ₹8–₹9 per unit.
Q:How long does a rooftop solar water heater take to pay for itself?
A rooftop solar water heater costs approximately ₹18,000 to ₹30,000 installed (depending on capacity: 100L to 200L). By replacing an electric geyser that costs ₹800–₹1,100/month in electricity, the solar water heater pays back in 2 to 3.5 years. Over its 15-year lifespan, you save ₹1.5 Lakhs to ₹2 Lakhs in avoided electricity costs.
Q:Is an LPG gas geyser cheaper to run than an electric geyser in India?
It depends on local LPG prices and electricity tariff. At ₹900/cylinder (14.2 kg) and ₹8/unit electricity, LPG and electric geysers have roughly equivalent per-litre heating costs. However, an LPG instant geyser heats water on-demand (eliminating standby heat loss), making it 15–20% more efficient than electric storage geysers in actual usage. LPG is better in areas with high electricity tariffs (>₹9/unit).
Q:What is the difference between a storage geyser and an instant (tankless) water heater?
A storage geyser maintains a tank of hot water at all times, consuming electricity even when no one is bathing — this is called standby heat loss (typically 10–15% of total consumption). An instant geyser has no tank: it heats water only when the tap is opened, eliminating standby loss entirely. Instant geysers have higher wattage (3,000W to 4,500W) but shorter run times, making them more economical for families who use hot water in scattered bursts throughout the day.
Q:Should I buy a 5-Star rated electric geyser in India?
Yes, for storage geysers, a BEE 5-Star rating is worth the small premium. 5-Star geysers use superior polyurethane (PUF) insulation that reduces standby heat loss by 50–60% compared to 3-Star models. Over 10 years, a 5-Star 25L geyser saves approximately ₹8,000 to ₹12,000 in electricity versus a 3-Star model of the same capacity — more than covering the ₹2,000–₹3,000 price difference.
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