10900 NE 4th St, Suite 2300, Bellevue, WA 98004
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Bellevue & Eastside estimate

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Bellevue/Eastside ballpark, not a quote. Your exact, written flat-rate price is confirmed on-site before any work starts.

How much does it cost to replace a water heater in Bellevue?

In Bellevue, a tank water heater costs about $1,500 to $2,800 installed, a tankless unit runs $3,500 to $6,500, and a heat-pump (hybrid) unit lands around $2,800 to $4,800 before rebates. The exact price depends on fuel, venting, code upgrades, and access.

Those ranges include the unit, labor, removal of the old heater, and the permit. The low end assumes a straightforward like-for-like swap with good access; the high end reflects fuel conversions, venting work, tight installs, and the code upgrades Washington requires.

Tankless costs more up front but lasts 15–20 years and never runs out of hot water; a tank costs less and lasts 8–12 years. The heat-pump option costs more than a basic tank but cuts water-heating energy use sharply and qualifies for a PSE rebate.

What makes water heater replacement cost more on the Eastside

Four local factors push Bellevue water heater prices up: a required thermal expansion tank, the City of Bellevue permit and inspection, gas-line or venting upgrades on conversions, and tight installs in older homes.

Washington plumbing code requires a thermal expansion tank on closed systems, so an older home without one will need that added during replacement. Every water heater replacement also needs a permit pulled through City of Bellevue Development Services, with an inspection — that's built into a legitimate quote and is one reason a licensed install costs more than a big-box flat fee.

Switching from electric to gas, or from a tank to tankless, can mean a new gas line and venting — the single biggest cost swing. Tight installs in closets, attics, and crawlspaces add labor.

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Frequently asked

Water heater replacement cost calculator (Bellevue, WA): common questions

How much does it cost to replace a 50-gallon water heater in Bellevue?

A standard 50-gallon tank water heater runs about $1,500 to $2,800 installed in Bellevue, including the unit, labor, old-unit removal, a required expansion tank, and the permit. Gas-line work, tight access, or a fuel conversion push it higher. Use the calculator above to estimate your specific install.

Why is water heater replacement so expensive?

Most of the cost is a licensed, permitted, code-compliant install — not just the heater. Washington requires a thermal expansion tank, the City of Bellevue requires a permit and inspection, and older homes often need venting, gas, or access work. A big-box 'flat fee' frequently excludes the permit, expansion tank, and haul-away that a complete job includes.

Is a tankless water heater worth the extra cost?

Often yes in Bellevue: tankless units last 15–20 years (vs 8–12 for a tank), never run out of hot water, and save space. The trade-off is a higher install cost, driven mainly by gas line and venting upgrades. If you're replacing anyway and plan to stay in the home, the longer lifespan usually justifies it.

Are there rebates for a new water heater?

Heat-pump (hybrid) water heaters qualify for a PSE rebate of $1,000 (up to $1,100 income-qualified) on ENERGY STAR Tier 3/Tier 4 installs in 2026, and Washington's HARP/HOMES programs add more as they roll out. The federal 25C credit expired at the end of 2025. We handle the rebate paperwork as part of the install.

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