Water Heater Cost Calculator: Electric vs Gas vs Solar
Compare annual operating costs and payback timelines between electric storage geysers, instant LPG gas geysers, and rooftop solar thermal systems.
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 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/shower. For a family of 4 taking daily hot baths, it consumes around 100 to 120 units monthly (~₹800 to ₹1,100/mo).
Q:How long does a rooftop solar water heater take to pay for itself?
A 150 Litre Per Day (LPD) ETC solar water heater costs approximately ₹26,000 to ₹30,000 with installation. By replacing electric water heating for 300+ days a year, it saves around ₹6,000 to ₹8,500 annually in electricity bills, fully paying for itself in approximately 3.5 to 4.2 years.
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