Water Heater Installation in Raleigh, NC
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What a Wake County water heater has to work with
Winter nights here average 32°F from December through February, and the water entering the tank is cold right along with the ground around the pipes. Your water heater works harder to bring that water up to temperature during those months, and it does that job every day from October through April, seven months a year.
Power is the other thing to plan for. A quarter of North Carolina households went at least 24 hours without power in 2024, and the county has seen 308 damaging wind events and 7 winter storms over the last ten years. A gas water heater with a standing pilot keeps making hot water through an outage like that. One that relies on an igniter does not, until the power is back.
Whatever size tank goes in, it has to clear a federal efficiency minimum, and that minimum is not one number. It is set by a formula based on the tank's rated volume, applied differently depending on how the household draws hot water, so two tanks of the same type can face two different minimums.
- 32°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?
- Age is the first thing to check. If yours has been in service a long time, a repair now just delays the same decision later. Watch for water around the base of the tank, since that usually means the tank itself is failing and not a part inside it. Rusty water from the hot tap, a tank that makes popping or rumbling sounds, or hot water that runs out faster than it used to are all signs the tank is near the end. A contractor can check the tank and tell you whether it is worth repairing or time to replace it.
- Should I switch to a tankless water heater?
- It depends on what you want from your hot water and what your home can support. A tankless unit heats water on demand, so you do not run out partway through a shower, and it does not sit there holding a tank of hot water when no one needs it. Switching from a tank usually means new venting and gas line work, since tankless units draw more gas per minute than a tank does. A contractor can look at your gas line, venting, and where the unit would go, and tell you what switching would actually involve in your house.
- What changes when you install a tankless water heater?
- The biggest change is that hot water no longer runs out. A tank holds a set amount and once it's used, you wait for it to reheat. A tankless unit heats water as it passes through, so it keeps up as long as you're running the tap. That means different venting, since tankless units vent differently than tank models, and often a larger gas line to supply the higher flow the unit needs. It also takes a few extra seconds for hot water to reach the tap since the unit has to start heating the moment you turn the water on. A contractor can tell you what your home needs to make the switch.