Water Heater Installation in Kingsport, TN
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A new water heater here needs to handle a long, cold winter and the power going out
Winter nights in Sullivan County average 29°F from December through February, and the house calls for heat seven months of the year, October through April. That is a long stretch of cold weather for any water heater to run through.
Power does not always stay on through it. Tennessee saw 20% of households lose power for 24 hours or more in 2024, and the county has logged 29 winter storms and 58 damaging wind events over the past ten years. A water heater with a standing pilot lights on its own again once the power comes back. One with electronic ignition needs that ignition system working right to do the same. Whichever type goes in, it also has to meet the federal minimum efficiency for its size, since the standard is set separately for each tank volume rather than as one number for every heater.
- 29°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 20%
- of Tennessee 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 $280 a year to run in Tennessee compared with an electric water heater.
Estimates for a typical Tennessee home, from EIA household energy data and Tennessee fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Check the age on your tank's data plate first, since most tank water heaters are built to last a certain number of years and start failing more often once they pass it. Look for water pooling at the base, rust around the fittings, or hot water that runs out faster than it used to. If you're calling a plumber for the same leak or heating problem more than once a year, replacing the unit is usually the better move. A contractor can look at your specific tank and tell you whether it still makes sense to repair.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not just whether you can afford one. A tankless unit heats water as it flows through instead of storing it, so you don't run out partway through back to back showers, and it isn't holding a full tank of hot water on standby all day. The tradeoff is that installing one often means new gas or electric lines sized for its higher draw, plus new venting, since a tankless unit's requirements are different from a tank's. A contractor can look at your gas line, electrical panel, and existing venting to tell you what switching would actually involve in your house.
- What changes when you install a tankless water heater?
- The unit itself is much smaller than a tank, since it heats water as it flows through rather than storing it, so it usually mounts on a wall instead of standing on the floor. That means the gas line, electrical circuit, and venting often need to be resized, since a tankless heater draws harder in short bursts than a tank does. Because there's no tank to run dry, you get a steady supply of hot water as long as the unit can keep up with what's running at once, though that limit works differently than a tank's limit does. A contractor can walk through your gas, electrical, and venting to tell you exactly what the switch requires in your home.