Water Heater Installation in Helena, MT
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Ten months of hot water demand in Helena
Your water heater works September through June here, ten months a year. Winter nights average 15°F, which means the incoming water is already cold when it reaches the tank, so the burner or elements run longer to bring it up to temperature.
Storms take out power in this part of Montana. Over the last ten years the county has logged 77 winter storms and 151 damaging wind events, and statewide, 18% of households lost power for at least 24 hours in 2024. A gas water heater with a standing pilot keeps making hot water through an outage like that. One that relies on an igniter will not, until the power is back.
Any new water heater installed here has to meet the federal minimum efficiency for its type. That minimum is not one number. It is set by a formula based on the tank's rated volume, and it is applied separately across four different draw patterns, so two tanks of the same type in different sizes can face different minimums.
- 15°F
- the average winter night, and colder incoming water means longer heating
- 10 months
- September 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?
- Age is the first thing to check. Most tank water heaters last 10 to 15 years, and once you're past that, a repair often just delays the next failure. 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 leaking tank can't be repaired. If it's still under 10 years old and the problem is a part like a thermostat or heating element, a contractor can tell you whether replacing that part makes more sense than replacing the whole unit.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on whether your current tank is failing. A tankless unit heats water as it passes through instead of storing it, so you don't run out of hot water during a long shower or back to back loads of laundry. Homes here need hot water and heat for most of the year, so a unit that keeps up with steady demand is worth asking about. The tradeoff is that installing one usually means changes to the gas line, venting, or electrical, so a contractor needs to look at your home before you'll know what's involved.
- What changes when you install a tankless water heater?
- The biggest change is that hot water is no longer sitting in storage waiting for you. It's heated on demand as it flows through the unit, so there's no tank to run cold after heavy use. Because of that, a tankless unit often needs a larger gas line to deliver enough fuel for the burner, and it vents differently than a tank does. Some homes also need an electrical circuit added for the unit's controls. A contractor can look at your gas line, venting, and electrical setup and tell you what your house specifically needs.