Water Heater Installation in Hardin, MT
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Ten months a year of hot water demand in Hardin
Winter nights here average 14°F from December through February, and homes need heat September through June, ten months of the year. A new water heater has to keep up with that stretch, not just a few weeks of cold.
Big Horn County has logged 84 winter storms and 91 damaging wind events over the past ten years, and across Montana 18% of households lost power for 24 hours or more in 2024. A gas water heater with a standing pilot will stay lit through an outage like that. One with electric ignition will not restart until the power does. Whatever gets installed also has to meet the federal minimum efficiency set for its size, which is figured separately for each tank volume, so the number that applies depends on the size tank the home needs.
- 14°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?
- Water pooling at the base of the tank is the clearest sign, and it means the tank itself has failed inside. Rusty or metallic-tasting hot water is another, especially if it clears after running for a minute then comes back. A popping or rumbling sound during heating points to sediment built up on the bottom of the tank, which makes the unit work harder and wears it out faster. If the water heater is over ten years old and needs a repair, replacing it is usually the better call since the tank itself is the part most likely to fail next, and that part cannot be fixed.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on any rule that says newer is better. A tankless unit heats water only as you use it, so you get endless hot water instead of running out partway through a shower. It takes up much less space than a tank, which matters if you are tight on room in a closet or utility area. Homes here need hot water and heat for most of the year, so a unit that runs efficiently across long stretches of use is worth weighing. A contractor can look at your house and tell you whether the switch makes sense for your plumbing and gas or electric supply.
- What changes when you install a tankless water heater?
- The biggest change is that you stop storing hot water and start heating it on demand, which means the unit fires up only when you open a hot tap. This usually means new venting, since tankless units vent differently than a tank does. Gas models often need a larger gas line to deliver enough fuel for the higher burner output. Electric models can require an upgraded circuit since they draw more power at once than a tank did. A contractor will look at your home's existing gas, electric and venting setup to say exactly what needs to change.


