
What Wisconsin homes are up against.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31. · U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates
What a replacement quote actually covers depends partly on what the existing equipment has already been through. 8,066 severe weather events were recorded in Wisconsin between 2015 and 2024. At that rate, a system does not wear on a simple calendar schedule. It wears against what it has been asked to do, and a unit that has had to hold capacity and recover repeatedly arrives at a service call in a different condition than the hours on its thermostat suggest. A contractor reading that history at one address is deciding whether the remaining equipment can carry the load or whether it has already spent what it had.
A water heater does not get replaced in isolation. Whatever vent pipe, gas line, or electrical whip already feeds that spot has to work with the new unit, and that only gets confirmed by someone standing in front of it. Half the homes in Wisconsin were built in 1975 or earlier, and half in 1975 or later (2020-2024 ACS 5-year). That spread means a contractor walking into a home anywhere in the state cannot assume what they will find. One house might take the new unit on the existing connections without trouble. Another might need the vent resized or the gas line checked before the install can move forward. Either way, that gets decided on site, not over the phone.
How does your Wisconsin county compare on severe weather?
2015–2024 · Source: NOAA National Centers for Environmental Information, Storm Events Database.
A water heater itself sits indoors or in a garage, but its power supply, gas line, or venting can still be exposed to wind, ice, and heavy rain where they run outside. A higher count on this chart means that exposure happens more often where you live. Have a contractor check the venting, the power connection, and the condition of any part of the unit or its hookups exposed to the outside.