Water Heater Installation in Arlington, VA
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Arlington winters ask a lot of a water heater
Winter nights here average 29°F from December through February. The water coming into the tank is colder for longer because of it, and the heater has to work harder to bring it up to temperature. That work runs seven months a year, October through April.
Power is part of the picture too. In Virginia, 22 percent of households went at least 24 hours without power in 2024, and Arlington County has recorded 8 winter storms and 77 damaging wind events over the past ten years. A new installation is a chance to plan for that, not just for a normal day. Sizing matters more than it looks like on paper, too. The federal efficiency minimum for storage water heaters isn't one number. It's a formula based on the tank's rated volume, applied separately to four different draw patterns. Two tanks of the same type, at different sizes, can face different minimums.
- 29°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 22%
- of Virginia 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 $320 a year to run in Virginia compared with an electric water heater.
Estimates for a typical Virginia home, from EIA household energy data and Virginia fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Look at the age first. Most tank water heaters last about a decade, and once you're past that, a repair is just a delay. Rust colored water from the hot tap, a tank that's rusting on the outside, or water pooling underneath are signs the tank itself is failing, and a tank cannot be repaired. If it's still making hot water but running out faster than it used to, or you hear rumbling or popping from sediment in the bottom, those point to a tank near the end of its life even if it hasn't failed yet.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on your house being unusual in any way. A tankless unit heats water as you use it, so you get a steady supply instead of running out after a long shower or a load of laundry. It's a fair option if your current tank is due for replacement anyway and you're tired of running out of hot water. Winters here run cold, December through February nights average 29°F, and incoming water is colder in winter, which means a tankless unit works harder to reach the same output temperature during those months. A contractor can size a unit against your household's hot water use and tell you what that means for your home.
- What changes when you install a tankless water heater?
- The water heater stops storing hot water and starts making it on demand, which changes what's connected to it, not just what it looks like. Tankless units need a gas line sized for their higher burner output, and most need dedicated venting rather than sharing what a tank heater used. There's no tank to fail or leak, but the unit does need its own periodic maintenance, since minerals in the water build up inside it over time. A contractor can walk through what your home's gas line and venting can support before you decide.