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Home appliances
Geysers fail early for boring reasons: hard water eating the tank, wrong capacity for a bucket bath, or a pressure rating too low for a high-rise supply line.
Quick answer
Storage 15 L for bucket bath, 25 L for shower.
Instant only for hand wash or small use.
Glass-lined tank + replaceable anode rod.
8 bar pressure rating for high-rise buildings.
In the shop
Read these off your phone at the counter. The answer tells you more than the price tag.
1.“What is the tank capacity, and is the inner tank glass-lined or stainless?”
A good answer: 15 L for a bucket bath family, glass-lined with a stated warranty in years.
2.“Is it rated for my area's water pressure and hard water?”
A good answer: A pressure rating in bar plus honest talk about anode rod replacement.
A few questions about your situation, not about the product.
Add one short need not covered above.
Answer all 3 questions to see the spec sheet to shop with.
The sticker price is one part of owning a water heater (geyser). Adjust the numbers to your own usage and tariff to see the electricity cost a star rating actually translates to.
Units per year
300 kWh
Cost per year
₹2,400 (≈$29)
Cost over 5 years
₹12,000 (≈$140)
Often more than the price difference between two models.
Geysers are the biggest hidden winter bill. Tank size and thermostat setting matter most. Estimates only — actual consumption varies with ambient temperature, settings and unit condition. USD values are approximate.
Every new appliance already carries a brand warranty. An extended plan or AMC only adds value where it covers the parts that actually fail, with on-site service in your city — so read the cover, not the discount.
Ask these five questions
Usually not covered
Rule of thumb: a plan is rarely worth it if it costs more than ~15% of the product price, if the item is cheap to repair locally, or if the brand's own service network in your city is already strong.
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Instant heats water as it flows; storage heats a tankful and keeps it warm.
Why it matters
Instant suits kitchen sinks and quick handwash; bucket or shower baths need storage.
What to check
Instant geysers cannot fill a bucket at usable temperature in cold winters.
Tank size for storage models.
Why it matters
One bucket bath ≈ 15 L of hot water mixed. 15 L geyser suits one bathroom; 25 L for a family or a shower.
What to check
Oversizing wastes standby electricity every day.
Glass/vitreous enamel coating plus a sacrificial magnesium rod.
Why it matters
Hard Indian water corrodes tanks; the anode rod dies first and protects the tank.
What to check
Ask if the anode rod is replaceable and how often (typically every 2–3 years).
How much water pressure the tank can take.
Why it matters
High-rise buildings and pressure pumps need 6–8 bar rated units; standard 4 bar can burst or leak.
What to check
If you're above the 5th floor or use a booster pump, insist on 8 bar.
Heat-retention efficiency and temperature control.
Why it matters
A 5-star geyser loses less standby heat; adjustable thermostat lets you cap at 55–60°C and save power.
What to check
Look for thermal cut-out plus a separate safety valve.
3 L instant units to 25 L storage geysers with 7-year tank warranty.