Water Heater Installation in Hermiston, OR
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Hermiston winters put your water heater to work
Winter nights here average 27°F from December through February, and homes need heat from September through June, ten months a year. Your water heater is working through most of that stretch too, bringing cold water up to temperature every time someone runs a shower or starts the dishwasher.
Power is part of the picture. Twenty percent of Oregon households went at least 24 hours without power in 2024, and the county has logged 90 winter storms and 77 damaging wind events over the past ten years. A gas water heater with a standing pilot keeps running through an outage. One with electronic ignition does not. Federal efficiency minimums for storage tanks are set by tank size and draw pattern, so the right minimum for your household depends on how much hot water it actually uses, not just the size of the tank being replaced.
- 27°F
- the average winter night, and colder incoming water means longer heating
- 10 months
- September through June, the months homes here need heat
- 20%
- of Oregon 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 $390 a year to run in Oregon compared with an electric water heater.
Estimates for a typical Oregon home, from EIA household energy data and Oregon fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- The clearest sign is age, along with how it's behaving. Once a tank water heater is old, a repair often just delays the next failure. Watch for rusty water, water pooling around the base, or a tank that rumbles as sediment builds up on the bottom. If it's still working but getting up there in years, replacing it on your schedule beats replacing it after it floods a closet or utility room.
- Should I switch to a tankless water heater?
- It depends on what you want from it, not on whether one is better than the other in every case. A tankless unit heats water only when you open a tap, so it isn't keeping a full tank hot all day, and it won't run out partway through a shower. It also costs more upfront and needs a contractor to confirm your gas line or electrical supply can handle it. If your current tank still has good years left, there's no need to rush the switch. If it's near the end of its life anyway, that's the time to weigh the two side by side.
- What changes when you install a tankless water heater?
- The biggest change is that hot water becomes available as long as you need it, since there's no tank to run dry. A contractor also has to check that the gas line, venting, or electrical circuit feeding it can supply what the unit needs, which is often more than what the old tank required. Tankless units mount on a wall instead of standing on the floor, so you get that floor space back. They also need periodic descaling to keep the heat exchanger clear, especially where water is hard.


