Water Heater Installation in Boulder, MT
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What a Jefferson County water heater is up against
Homes here need heat from September through June, ten months a year, and winter nights average 15°F from December through February. A water heater is working through cold incoming water for most of the year, not just a few months.
Power is part of the picture too. Jefferson County has seen 16 winter storms and 10 damaging wind events over the past ten years, and statewide, 18% of households went at least 24 hours without power in 2024. A gas water heater with a standing pilot will keep heating water through an outage. One with electric ignition will not light again until the power is back. Whatever you install, it has to meet a federal efficiency minimum set by a formula tied to the tank's size, so the exact number depends on the size you choose.
- 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 and how it fails tell you most of what you need to know. A tank that starts leaking, rumbling, or running out of hot water faster than it used to is telling you it's done, not just having a bad week. Rust colored water from the hot tap, water pooling at the base, or a pilot light that won't stay lit are signs the tank itself is failing rather than one part needing a fix. A water heater that's out through a Boulder winter is a bigger problem than in a milder climate, so if yours is already showing more than one of these signs, it's worth replacing before it fails outright.
- Should I switch to a tankless water heater?
- It depends on what you want from it, not on your old tank being old. A tankless unit heats water on demand, so you don't run out, and it doesn't sit there keeping a tank of water hot around the clock. It costs more upfront and needs venting and gas or electric supply sized for it, which is why a contractor has to look at the house before saying whether a switch makes sense. If your household has run out of hot water repeatedly with a tank, that's the clearest sign a tankless unit would solve a real problem you have.
- What changes when you install a tankless water heater?
- The unit itself is smaller and mounts on a wall instead of taking up floor space, and it makes hot water only while a tap is open rather than storing it. That means the venting is different, often a dedicated vent sized for the unit, and the gas line or electrical circuit feeding it may need to be upsized to deliver enough power in the moment water is running. There's no tank to fail from rust or sediment buildup, but the unit needs its own maintenance, usually a periodic flush to clear mineral scale from the heat exchanger. A contractor will need to check your home's existing gas line, electrical panel, and venting path before installation, since what's already there determines how much has to change.