Your hot water heater replacement cost depends heavily on system type and structural upgrades. A standard tank swap costs between $1,200 and $3,000. Upgrading to a tankless system ranges from $2,500 to $7,000+ due to complex installation requirements. See our water heater installation cost guide for a broader breakdown.
Traditional tank replacements are fast and straightforward. Conversely, tankless conversions require intense power and specialized labor. You may need to run wider 3/4-inch gas lines or complete a 200-amp electrical panel upgrade.
Local permit fees, regional labor rates, and water hardness scale inhibitors will also impact your final project invoice.