Water Heater Installation in Lewiston, ID
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Ten months of the year, your water heater is working
Nez Perce County needs heat in the house from September through June, and that means the water heater is rarely coasting. Winter nights average 26°F, and a tank feeding cold-water lines that cold has to work harder to bring water up to temperature than one in a milder place.
Power loss is worth planning for here. The county has seen 29 winter storms and 37 damaging wind events over the past ten years, and statewide, 11% of households lost power for 24 hours or more in 2024. If you're choosing between a gas and an electric water heater, that's worth weighing. Whatever type you install, the federal efficiency minimum it has to meet is set by a formula based on its tank size, not one flat number, so the minimum for a small tank is different from the minimum for a large one.
- 26°F
- the average winter night, and colder incoming water means longer heating
- 10 months
- September through June, the months homes here need heat
- 11%
- of Idaho 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 $350 a year to run in Idaho compared with an electric water heater.
Estimates for a typical Idaho home, from EIA household energy data and Idaho 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, rusty water, or a tank that's old enough that it's outlived what you'd expect. Rust usually means the tank is corroding from the inside and it will not stop. If it's making rumbling noises or can't keep up with hot water like it used to, those are signs the tank is failing rather than something you can patch. A leaking tank should be replaced before it fails completely and floods the area around it.
- Should I switch to a tankless water heater?
- It depends on what you want out of it. A tankless unit heats water as it flows through rather than storing it, so you get hot water on demand instead of running out after a long shower. It won't run out partway through back to back showers the way a tank can, but the space it fits into and the gas or electric supply feeding it are different from what a tank needs. A contractor can look at your gas line, venting, and electrical setup and tell you whether your home is set up for one or what it would take to get there.
- What changes when you install a tankless water heater?
- The unit itself is smaller and usually mounts on a wall instead of taking up floor space. It needs its own venting, sized for that unit, and often a larger gas line or a dedicated electrical circuit depending on the model. More than half the homes in Nez Perce County heat with gas, so a lot of these installs involve checking whether the existing gas line can supply a tankless unit's higher demand. A permit and inspection from the local building office apply to this job just as they would to a tank replacement.