What South Carolina 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
The fuel a home runs on decides more about a water heater replacement than most homeowners expect. Electricity heats more occupied homes in South Carolina than any other fuel, at 70.8% (2020-2024 ACS 5-year). A contractor quoting a job here is working almost entirely in the electric column, which means the spec rarely turns on combustion air or flue routing. What it turns on instead is recovery rate and circuit capacity, both of which vary by house even when the fuel does not. A home's wiring, panel age, and daily draw all push the right unit in different directions, and a state total cannot resolve any of them.
A quote for a new water heater depends on what is already in the utility space, and in South Carolina that picture varies widely from house to house. Half the homes in South Carolina were built in 1992 or earlier (2020-2024 ACS 5-year). When a contractor opens the closet or looks at the panel, they are checking whether the existing circuit, the flue connection, and the clearances around the unit meet what a modern installation demands. Many do not. Upgrades to the electrical supply or venting are not discovered on the phone; they are discovered on site.
How exposed is your South Carolina county to severe weather?
2015–2024 · Source: NOAA National Centers for Environmental Information, Storm Events Database.
A county with a heavier storm record is a county where water heaters are more likely to lose power or sit through flooding and wind. A tank unit needs power to recover hot water after an outage, and one installed near floor level can take on water if the area around it floods. Have a contractor check the shutoff valve, the drain pan, and whether the unit's current spot leaves it exposed.