Water Heater Installation in Wausau, WI
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What a Wausau winter asks of a new water heater
Groundwater coming into your house is already cold before your water heater does anything with it, and from December through February nights here average 9°F. The colder the incoming water, the harder a tank or a burner has to work to bring it up to temperature, and in Marathon County that is not a two-month problem. Homes here need heat nine months out of the year, from September through May, and your water heater is working through all of them.
Power matters too. Across Wisconsin, about 18% of households lost power for 24 hours or more in 2024, and this area has logged 33 winter storms and 82 damaging wind events over the past ten years. A gas water heater with a standing pilot keeps making hot water through an outage. One with electronic ignition, or an electric tank, will not light or heat until the power is back. Whatever you install, it also has to meet the federal minimum efficiency for its size, which is set separately for each tank volume rather than as one number for every unit.
- 9°F
- the average winter night, and colder incoming water means longer heating
- 9 months
- September through May, the months homes here need heat
- 18%
- of Wisconsin 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 $330 a year to run in Wisconsin compared with an electric water heater.
Estimates for a typical Wisconsin home, from EIA household energy data and Wisconsin fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Watch for water pooling around the base of the tank, that usually means the tank itself is failing and not something you patch. Rusty water from the hot side only, banging or rumbling from inside the tank, or hot water that runs out faster than it used to are the other signs. Most storage water heaters have a working life of somewhere around a decade, so if yours is getting up there in age and starting to act up, replacing it before it fails is worth considering. A tank that fails outright usually means a mess to clean up on top of no hot water, and it happens without warning.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on any rule that says you should. A tankless unit heats water as you use it instead of storing it, so you don't run out partway through back to back showers. It also takes up far less space than a tank, and it can last a long time if it's maintained. The trade-off is that a tankless unit costs more to install and needs the right gas line and venting sized for it, so a contractor needs to look at your home before you decide.
- What changes when you install a tankless water heater?
- The unit mounts on a wall instead of sitting on the floor, so you get back the space a tank used to take up. It needs its own venting, sized to the unit, and often a larger gas line than the one feeding your old tank. There's no tank standing by with water already hot, so the unit fires up on demand every time you turn on a hot tap. Because of the venting and gas line work, installing one is a bigger job than swapping in another tank, and a contractor will need to check what your house already has before pricing it.