Wondering what a water heater replacement costs in Boise? Here is a realistic breakdown of what to expect for tank and tankless units in 2026.
Water heater replacement is one of the most common plumbing jobs in Boise, and it is also one where pricing varies widely. Understanding what drives the cost helps you evaluate quotes and avoid overpaying.
For a standard 40 or 50-gallon gas tank water heater, most Boise homeowners pay between 00 and ,500 installed. That range includes the unit, labor, a new expansion tank if required by code, and disposal of the old heater. Electric tank water heaters run slightly less, typically 00 to ,300 installed.
Tankless water heaters cost more upfront. A gas tankless unit installed in Boise typically runs ,800 to ,000 depending on the brand, BTU output, and whether gas line upgrades are needed. Electric tankless units are less common in Idaho due to the electrical load they require, but they run ,200 to ,500 installed.
Factors that can push costs higher include upgrading an undersized gas line, adding a new expansion tank where none existed, replacing corroded water supply lines, or bringing older installations up to current code. A reputable plumber will identify these issues during the estimate, not after the job starts.
1Up Plumbing provides upfront, flat-rate pricing on water heater replacement throughout Boise, Nampa, Meridian, and the Treasure Valley. Call (208) 919-8496 for a same-day estimate.