Water across Ohio
Cleveland and Toledo draw from Lake Erie, which is moderately hard. Columbus treats river and reservoir water and softens it. Cincinnati draws from the Ohio River and the Great Miami Buried Valley Aquifer, and Dayton relies on that same aquifer, which is notably hard. Wherever the water is harder, tanks need flushing more often and tankless units need regular descaling.
Older homes and cold winters
Much of Ohio's housing predates 1960, which means basement water heaters next to the furnace, shared masonry chimneys, and gas lines sized for older appliances. When a furnace is upgraded to a high-efficiency model that vents out the side, the water heater can be stranded in a chimney too large to draft properly. A draft test is worth requesting during any gas heater service in an older Ohio home.
Winter inlet water near 40°F means tanks recover slowly from December through March. Households that run short only in winter usually need a bigger or faster-recovering heater, not a repair.
Licensing, permits and costs
Ohio licenses plumbing contractors through the Ohio Construction Industry Licensing Board. Cities and counties issue permits for water heater replacement through their building departments. Typical repairs run $150 to $600, and a standard gas tank replacement usually costs $1,400 to $3,100. See water heater replacement for details.
Choose a city below for its water source, common problems and local permit notes.