Water Heater Repair in Crystal Lake, IL
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Cold groundwater and long winters wear on Crystal Lake water heaters
Your water heater works harder here than the label suggests. From October through May, the water coming into the tank is cold, sometimes very cold, and the burner or element has to run longer to bring it up to temperature. That extra runtime adds up over eight months, and it wears on the parts that do the heating, the burner assembly in a gas unit, the heating element in an electric one.
McHenry County has also seen 18 winter storms and 140 damaging wind events over the past ten years, and power interruptions are common enough across Illinois that many homes have gone a full day without it. When the power drops and comes back, most water heaters recover on their own, but a unit with a pilot light or an igniter already close to failing may not relight. That is when a homeowner turns on the hot water tap and gets nothing.
- 17°F
- the average winter night, and colder incoming water means longer heating
- 8 months
- October through May, the months homes here need heat
- 16%
- of Illinois households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
NOAA nClimDiv, 1991–2020 normals
A new water heater would cut about $60 a year off hot water for a typical Illinois home.
Estimates for a typical Illinois home, compared with an older unit built to the federal minimum, from EIA household energy data and Illinois fuel prices. Your home will differ.
Repair makes sense when an element, thermostat or gas valve has failed.
Replacement makes sense when the tank itself is leaking.
- Why is my water heater leaking from the bottom?
- The tank itself has likely rusted through from the inside and is starting to fail. Once a tank leaks from the bottom, it's usually the tank wall, not a fitting or valve, and that kind of leak doesn't get fixed, it means the tank needs replacing. It can also be a loose drain valve or a failed temperature and pressure relief valve, both of which a contractor can check before ruling out the tank. Shut off the water and power or gas to the unit until someone can look at it, since a full tank of water sitting on a rusted-through seam can let go without warning.
- Why won't the pilot light on my water heater stay lit?
- The most common cause is a worn out thermocouple, the small sensor that tells the gas valve the pilot is burning. When it wears out, it can't confirm the flame anymore, so the gas valve shuts off even though the pilot lit just fine. A dirty pilot orifice or a draft blowing out the flame can cause the same problem. A contractor can test the thermocouple and replace it if that's the issue, since it isn't something to keep relighting on your own.
- Can a tankless water heater be repaired?
- Yes, most problems with a tankless unit are repairable. Common issues are a clogged inlet filter, a buildup of scale on the heat exchanger, or a failed igniter, and all of those can be serviced without replacing the unit. Error codes on the display usually point straight to the part causing trouble, which helps a contractor diagnose it quickly. Replacement is only needed if the heat exchanger itself has cracked or corroded through.