Water Heater Installation in Butte, MT
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A tank built for a Butte winter
Butte homes need heat from August through June, 11 months of the year, and a water heater works through all of them. Winter nights average 14°F from December through February, and groundwater temperature follows the cold along with everything else in the house.
Power doesn't always hold up here. The county has logged 49 winter storms and 17 damaging wind events over the past ten years, and statewide, 18% of households went at least 24 hours without power in 2024. Whatever gets installed also has to meet the federal minimum efficiency, and that minimum isn't one number. It's set by the tank's rated volume, so two heaters of the same type can face different minimums depending on their size.
- 14°F
- the average winter night, and colder incoming water means longer heating
- 11 months
- August through June, the months homes here need heat
- 18%
- of Montana 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 $400 a year to run in Montana compared with an electric water heater.
Estimates for a typical Montana home, from EIA household energy data and Montana fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Look at the age first. Once a tank water heater gets old, a repair just delays the next problem instead of solving it for good. Water pooling at the base or rust-colored water are signs the tank itself is failing, not something a part swap fixes. If the unit is newer and the problem is a heating element, thermostat, or valve, a contractor can usually repair it instead of replacing the whole thing.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on age or a breakdown. A tankless unit heats water on demand instead of keeping a tank hot around the clock, and it takes up less space. With winter nights here averaging 14°F, the incoming water is colder for a good part of the year, so a tankless unit needs to be sized with that in mind rather than just going by the number of fixtures in the house. A contractor can also tell you whether your gas line and venting can support one before you decide.
- What changes when you install a tankless water heater?
- The biggest change is that hot water no longer runs out. A tank holds a fixed amount and you wait for it to recover once it's empty. A tankless unit heats water as it flows through, so a long shower doesn't compete with the dishwasher for what's left in a tank. It also usually means new venting and sometimes a larger gas line, since the unit draws more gas at once than a tank does. Expect the installer to check the gas supply and venting path as part of the job, not just swap one unit for the other.