Water Heater Installation in Dover, DE
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Dover water heaters face a long heating season and the storms that come with it
Dover homes need heat from October through April, seven months a year. Winter nights average 28°F from December through February, and a water heater works through all of it.
Kent County has logged 10 winter storms and 120 damaging wind events over the past ten years, and in 2024, 12% of Delaware households lost power for at least a day. A gas water heater with a standing pilot keeps running through an outage. One with electronic ignition or an electric tank will not fire back up until the power does, though most start again on their own once it's restored. Whatever gets installed also has to meet the federal minimum efficiency for its size and type, which is set separately by the tank's rated volume rather than as one number for every heater.
- 28°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 12%
- of Delaware 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 heat pump water heater would save about $360 a year to run in Delaware compared with an electric water heater.
Estimates for a typical Delaware home, from EIA household energy data and Delaware fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Look at the age first. Once a tank water heater is old enough that a repair would just delay the same decision, replacement is usually the better call. Water pooling at the base usually means the tank itself is failing, not a fitting or a valve, and that's not something you patch. If your water is rusty coming from the hot tap only, or the tank is making a low rumbling sound as it heats, the tank is corroding on the inside. A unit that's short on hot water more often than it used to, with no change in how your household uses it, is losing capacity as sediment builds up inside the tank. Any one of these on its own is worth a look. A few of them together, especially on an older unit, means replacement is the honest answer.
- Should I switch to a tankless water heater?
- It depends on what you want from it, not on whether tankless is better in general. A tankless unit heats water only when you open a hot tap, so you're not paying to keep a tank full of hot water sitting all day. It also won't run out partway through a shower the way a tank can when demand outlasts what's stored. Against that, a tankless unit needs a gas line or electrical circuit sized to fire fast enough to heat water on demand, and the wall or floor space it goes on has to work with its venting. Whether your house can take one without rework to the gas line or wiring is something a contractor has to look at directly.
- What changes when you install a tankless water heater?
- The biggest change is that hot water no longer sits stored and waiting. It's heated the moment you turn on a hot tap, so there's no tank to run out and no standby heat loss between uses. That means the gas line or electrical circuit feeding the unit has to be sized for a burst of high demand instead of a steady small draw, which is why tankless installs often call for upgraded gas piping or a larger circuit. Venting changes too. Tankless units vent differently than tank units, usually through a smaller dedicated pipe rather than a standard flue, and where that vent can run depends on the unit and the wall it's mounted on. A contractor licensed in Delaware can tell you what your house needs to make the switch.