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Gas water heaters have a burner, an ignition system, and a heat exchanger that cycle every time the tank calls for heat. Utility gas heats more occupied homes in New Castle County, Delaware than any other fuel, at 53.8% (2020-2024 ACS 5-year). With gas driving that share of homes, a contractor arriving at a failed water heater in this county starts with the burner orifice, the thermocouple, and the ignition components before anything else, because those are the parts that wear from repeated firing cycles. A venting problem, a delayed ignition, or a corroded thermocouple all trace back to combustion equipment that has been working continuously since install.
Half the homes in New Castle County, Delaware were built in 1975 or earlier (2020-2024 ACS 5-year). A house that old has likely cycled through at least one water heater since it was built, which means the unit a contractor opens today carries its own history, separate from the house's. Sediment load, anode rod condition, and whether the relief valve has ever been tested are questions the building's age cannot answer. What the opened tank actually holds is what sets the repair scope.
The Parts of a Water Heater a Contractor Checks First
The tank is the part a homeowner notices first, usually standing in a utility room, basement, or closet. It holds and heats the water your household draws. When it leaks, fails to heat, or makes noise, that tank is the starting point for a contractor looking at what went wrong. The burner assembly or heating element sits inside or directly beneath it and is where heat is actually produced.
The pressure relief valve mounts on the tank's side and is a small but serious safety component that opens if pressure builds beyond safe levels. The anode rod runs down through the tank's interior and slows corrosion of the tank walls. Supply and discharge pipes connect at the top, carrying cold water in and hot water out to every fixture in the house.
The drawing shows the general layout of a water heater system, and a licensed contractor determines which parts apply and what needs attention in your specific home.
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274 severe weather events were recorded in New Castle County, Delaware between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in New Castle County, Delaware were built in 1975 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesNew Castle County, Delaware holds 236,079 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 69.0% of the occupied homes in New Castle County, Delaware (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in New Castle County
Extreme weather puts real stress on water heaters, forcing them to work harder and wear faster. How much of that pressure falls on equipment in New Castle County is a local fact, and it shapes how often repair becomes necessary.
274 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.