Water Heater Installation in Durham, NC
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Durham asks a lot of a water heater over seven cold months
Water heaters here run hardest from October through April, seven months of the year. Winter nights average 31°F, and the colder the water coming in, the more work it takes to bring it up to temperature.
Power is the other thing worth planning for. A quarter of North Carolina households went at least 24 hours without power in 2024, and Durham County has seen 7 winter storms and 104 damaging wind events over the past ten years. A gas water heater with a standing pilot keeps working through an outage. One with electronic ignition needs power to fire, though it will come back on by itself once power returns. Whatever you install, it has to meet the federal minimum efficiency for its size and type, and that minimum is set separately for each tank size and draw pattern.
- 31°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 25%
- of North Carolina 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 $300 a year to run in North Carolina compared with an electric water heater.
Estimates for a typical North Carolina home, from EIA household energy data and North Carolina fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Watch for water around the base of the tank, water that comes out rusty or with a metallic smell, or a tank that makes rumbling or popping sounds when it heats. Sediment builds up on the bottom of the tank over the years, and once it starts to crack the lining or work through the steel, a leak follows. A water heater showing any of these signs is worth having a contractor look at rather than waiting for it to fail outright, since a failed tank means water damage on top of no hot water.
- Should I switch to a tankless water heater?
- It depends on what you want out of your hot water and what your home can support, not on one being better than the other in every case. A tankless unit heats water only when you open a tap, so it does not hold a reserve that can run out during back to back showers. It needs a gas line or electrical circuit sized for its demand, and in some homes that means new venting or wiring, which is why a contractor needs to see the house before saying whether it fits.
- What changes when you install a tankless water heater?
- The unit itself is smaller and mounts on a wall instead of taking up floor space, and it stops storing hot water and starts heating it on demand. Gas tankless units usually need larger gas lines and different venting than a tank did, because they draw more heat for a short burst rather than a steady low flame. If the home runs on electric, an electric tankless unit needs a circuit built for its draw, which is often more than a standard water heater circuit carries. A contractor sizes all of this to the house rather than swapping one unit for another in the same spot.