No Hot Water? Check These Four Things First

The short answer: before calling anyone, check four things — a gas unit’s pilot light, an electric unit’s breaker, the thermostat setting on the tank, and whether you simply outran the tank’s recovery after back-to-back showers. If those all check out and the water stays cold, the heating element, gas valve, or the tank itself needs a professional look.

1. Gas unit: is the pilot lit?

On older gas water heaters, a draft or a hiccup in gas supply can put the pilot out. The relighting procedure is printed on the tank’s label — follow it exactly, and if the pilot won’t stay lit after relighting, stop. A pilot that keeps dying usually means a failing thermocouple, and that’s a water heater repair visit, not a bigger match.

2. Electric unit: check the breaker

Water heaters pull serious current, and a breaker that’s tripped once may sit in a position that looks on. Flip it fully off, then fully on. If it trips again, leave it off and call — a breaker that won’t hold is protecting you from a real electrical fault, most often a shorted heating element.

3. The thermostat on the tank

Someone bumps it, a cleaning crew leans a mop on it, a curious kid discovers the dial. If the water is lukewarm rather than cold, check that the tank thermostat hasn’t been turned down. Most manufacturers recommend around 120°F — hot enough for the house, low enough to slow scalding and mineral buildup.

4. Did you just outrun the tank?

A tank water heater stores a fixed number of gallons. Three showers, a dishwasher cycle, and a load of laundry inside an hour will empty almost any residential tank. Give it thirty to sixty minutes. If hot water comes back, nothing is broken — the tank may simply be undersized for how your household actually lives, which is a sizing conversation, not an emergency.

Signs the tank itself is done

Rust-colored hot water, popping or rumbling sounds from sediment buildup, moisture or pooling around the base, or a tank past the 10–12 year mark that now fails regularly — these point to replacement rather than another repair. A leaking tank shell can’t be fixed, only replaced, and it won’t pick a convenient day.

No hot water counts as an emergency on our dispatch board, same as no heat. We’ll diagnose which of these it actually is, show you what we found, and quote the fix — repair or replacement — before any work starts.