Most water heater problems fall into a handful of patterns. Here’s what each usually means and what you can safely check.
No hot water at all
Gas water heaters
Check whether the pilot is lit (many have a small window). If it won’t stay lit, the thermocouple is a common culprit. A failed gas control valve is another.
Electric water heaters
Check the breaker. If it’s fine, a heating element or thermostat has likely failed.
Not enough hot water
Sediment buildup, a failed lower element, a broken dip tube or a heater too small for the household. Lake Michigan water is moderately hard, so sediment builds over time.
Popping or rumbling
Sediment at the bottom of the tank traps water that boils under it. Flushing can help on younger tanks.
Leaks
A leak from a fitting, drain valve or relief valve can usually be repaired. A leak from the tank body means it has rusted through and must be replaced.
Heavy leak? Close the cold-water valve at the top of the heater and turn the gas control to Off or switch off the breaker. If you smell gas, leave and call Peoples Gas or 911 from outside.
Rusty or smelly water
Rusty hot water can mean a corroding tank or anode rod. A rotten-egg smell often comes from a reaction with the anode rod.
Repair or replace?
Tank heaters commonly last around 8 to 12 years. An older heater with a leaking tank is a replacement; a younger one with a failed part is usually a repair. Tankless units last longer but need periodic descaling.
Call (312) 924-7223 for water heater repair and installation in Chicago.