Geyser Not Heating Water? Causes, Safety Checks and Repair Costs (2026)

A geyser that will not heat is almost always one of two inexpensive parts - the heating element or the thermostat. But a geyser is also the one bathroom appliance where a fault can be genuinely dangerous, so there are checks you should never skip and repairs you should never attempt yourself.

If your geyser is tripping the power or you see any water where there should not be, treat it as electrical-safety-first: switch it off at the mains and do not use it until a technician has inspected it.

No heating but power is on

If the indicator light is on but the water stays cold, the heating element has almost certainly burned out - the single most common geyser fault, caused over time by hard-water scaling. The thermostat, which tells the element when to switch on, is the other suspect and often fails alongside it.

Both are standard replacement parts. Together with labour, expect roughly 600 to 1,600. A good technician replaces the element and thermostat as a pair on an older unit, since a fresh element on a failing thermostat is a false economy.

If it trips the power or ELCB

A geyser that trips your ELCB or MCB the moment it is switched on is warning you of an earth leak - usually a cracked, scaled element letting current into the water. This is a safety fault, not an inconvenience. Do not keep resetting the switch and using it; the trip is the protection working.

Switch it off and book an inspection. The fix is normally an element replacement, but the technician must confirm the earthing and casing are sound before the geyser is put back into service.

If the tank is leaking

Water pooling under the geyser or dripping from the body usually means the inner tank has corroded, and unlike an element that cannot be repaired - a leaking tank means the unit is at end of life. Leaks at the inlet or outlet pipe joints are the exception and are a cheap fix.

If the leak is from the body itself, budget for a replacement rather than a repair, and ask about descaling and anode maintenance on the new unit to make it last.

Prevention - why hard water kills geysers

Most Indian geyser failures trace back to hard water. Scale builds on the element and inside the tank, making the element work harder until it burns out, and eating the sacrificial anode that protects the tank. An annual service that descales the element and checks the anode roughly doubles the working life of the unit.

If your area has heavy scaling, a periodic descale is far cheaper than the string of element replacements you will otherwise pay for.

What to do next

For a no-heating geyser, match the symptom above and book a visit - element and thermostat jobs are same-visit fixes. For any tripping or leaking geyser, prioritise safety and get it inspected before further use. Yantra4All engineers carry common elements and thermostats and check earthing and pressure valves as part of the visit.