Water Heater Installation in Hudson, WI
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What a Hudson winter asks of a new water heater
Winter nights here average 9°F from December through February, and the house calls for heat from September through May, nine months of the year. A new water heater goes in alongside that load, sharing the same gas or power supply your furnace is drawing on for most of the year.
St. Croix County has recorded 30 winter storms and 28 damaging wind events over the past ten years, and 18% of Wisconsin households lost power for 24 hours or more in 2024. A gas water heater with a standing pilot lights on its own once gas is flowing again. One with electronic ignition, or an electric unit, needs the power back first. That is worth weighing when you decide what replaces the one you have.
The federal efficiency minimum for storage water heaters is not a single number. It is a formula based on the tank's rated volume, applied differently across draw patterns, so two tanks of different sizes can face different minimums even when they are the same type of heater.
- 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?
- Age is the first thing to check. A water heater has a rated lifespan, and a contractor can tell you where yours stands based on its age and condition. Look for rust-colored water from the hot side, a tank that's damp or rusting at the seams, or a heater that can't keep up with the same hot water use it used to handle. A popping or rumbling sound during heating means sediment has built up on the bottom of the tank, and once that starts, efficiency keeps dropping. If the tank itself is leaking, that's not a repair, that's a replacement, since a leak means the tank has failed.
- Should I switch to a tankless water heater?
- It depends on what you want from your hot water, not just on saving space. A tankless unit heats water only when you draw it, so it doesn't run out the way a tank can when several showers happen back to back. It also runs on demand rather than keeping a tank of water hot around the clock. The tradeoff is that a tankless heater needs a strong enough gas line or electrical circuit to fire at that rate, so switching from a tank often means changes beyond just swapping the unit. A contractor can look at your gas line, venting, and electrical setup and tell you what switching would actually involve in your house.
- What changes when you install a tankless water heater?
- The unit mounts on a wall instead of taking up floor space, and it needs venting rated for its exhaust, which is often different from what a tank used. Gas-fired tankless heaters draw more gas at once than a tank does, so the gas line has to be sized to deliver that flow, and it isn't always the same line that fed the old tank. Electric models need a circuit sized for the heater's draw. None of this is guesswork a page like this can answer for your specific house, since it depends on your existing gas line, venting, and panel capacity. A contractor can check what you have and tell you what needs to change.