No hot water in Streamwood is one of the most common calls, and the cause is usually one failed part rather than the whole heater. This page explains the difference between a heater that has stopped and one that can no longer keep up, the usual causes on gas and electric tanks, and how the tech decides between repair and replacement.
Please don't try to relight a pilot or reset an electric heater yourself. Both can hide the real fault, and gas and high-voltage parts are for the technician.
No hot water vs hot water runs out fast
These are two different problems, and telling them apart on the phone saves time.
- No hot water at all, at every tap, usually means the heater is not heating: a pilot or burner problem on gas, or a power, element or thermostat problem on electric.
- Hot water runs out fast, where showers start hot but go cold sooner than they used to, often points to sediment, a failed lower element, a broken dip tube or a heater that is now too small for the household.
- Lukewarm water even at the hottest setting can mean one of two elements has failed, a thermostat is faulty, or a mixing valve is set wrong.
- One fixture only, while the rest are hot, usually means the fixture or its mixing valve, not the heater.
Water heater not heating: common causes on gas heaters
On a gas tank, the tech looks at the parts that create and control the flame:
- The pilot or igniter, and whether it lights and stays lit.
- The thermocouple or flame sensor, which tells the gas control the pilot is burning. If it fails, the gas control shuts off the gas.
- The gas control valve and thermostat on the front of the tank.
- The burner, which can be fouled by debris or poor combustion air.
- Venting and draft, because many heaters shut down to protect themselves when exhaust isn't venting correctly.
Our gas water heater page covers these parts in more detail. They are all described here so you understand the visit, not as repair steps.
Electric water heater not heating: common causes
Electric tanks usually have two heating elements, upper and lower, each with its own thermostat. Common faults include a failed element, a stuck thermostat, a tripped high-limit reset, or a tripped breaker. If the reset trips once, it is a symptom of something else, which is why pressing it repeatedly isn't a fix. See the electric water heater guide for more.
Tell the person on the phone whether the heater is gas or electric.
Sediment, a failing dip tube or a heater that is too small
Streamwood's moderately hard water leaves minerals that settle as sediment on the bottom of the tank. On gas units, that layer insulates the water from the burner, so the heater works harder and recovers more slowly. On electric units, sediment can bury the lower element.
The dip tube carries incoming cold water to the bottom of the tank. If it cracks or breaks, cold water mixes with hot at the top and hot water seems to vanish quickly. Sometimes nothing has failed at all: the household has grown, or showers have changed, and the heater simply can't keep up. Regular water heater maintenance helps with sediment on a tank that is still in good shape.
What the technician checks first
The tech starts with questions: gas or electric, how old, every tap or one, sudden or gradual. Then:
- Confirms the fuel or power supply to the heater.
- On gas, checks the pilot, igniter, thermocouple, gas control and venting.
- On electric, tests elements and thermostats safely with the power isolated.
- Checks for sediment, a failed dip tube, and the temperature setting.
- Looks at the tank for signs of leaking or corrosion that would change the advice.
Repair or replace: how the decision is made
If a part has failed on a heater that is otherwise sound, repair is usually the sensible answer, and you are told so. If the tank is old, leaking, heavily corroded or the repair would be a big share of a new heater, the tech explains the replacement options alongside the repair. Either way, you hear the upfront price before any work begins.
No hot water in Streamwood homes
Where the heater sits affects how quickly the tech can get to work. In the original east-side ranches, it is often in a tight main-floor closet. In central townhomes and condos, it may be in a utility room off a hallway. West of Route 59, it is usually in the basement. If you live on the east side, see water heater repair in Woodland Heights; south of the golf course, see water heater repair in Oak Knolls. In winter, colder incoming water makes a struggling heater fail sooner, which is why so many of these calls come in January and February.
Not enough hot water in winter
Many Streamwood households notice their hot water fading in January rather than July. Nothing has broken: the water coming into the house is much colder, so the heater has to add more heat to every gallon and recovers more slowly. A tank that was only just big enough in summer can fall short once the ground freezes.
If the problem only shows up in cold months, tell the person on the phone. The tech will still check the thermostat setting, sediment and the dip tube, but the answer may be a heater with a better first-hour rating rather than a repair. If the pattern started suddenly, mid-season, a failed part is more likely, and that is usually the cheaper fix.
That pattern helps the tech narrow things down before arriving.
For an overview of every service, see water heater repair streamwood.