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Gas tankless water heater replacement cost in Portland, OR

Installed, About 180,000–199,000 BTU (2–3+ bathrooms)

Low$2,750
Typical$3,150
High$4,400

Metro area: Portland-Vancouver-Hillsboro, OR-WA. Wages: BLS, May 2025. Permit notes checked October 2026.

A typical tankless water heater (About 180,000–199,000 BTU (2–3+ bathrooms)) costs about $3,150 installed in the Portland area, 13% above the national figure, because plumbers here earn a median $49 an hour against $31 nationally.

Gas tankless water heater (About 180,000–199,000 BTU (2–3+ bathrooms)), installed

Prices for: Portland-Vancouver-Hillsboro, OR-WA

Low$2,750
Typical$3,150
High$4,400

Unit $1,566 (online list price, middle of 15 listings) plus installation about $1,550 for this area. Permit fees and code extras are listed below the table.

How this estimate is built

Prices by size in Portland

SizeLowTypicalHighNational typical
About 150,000 BTU (1–2 bathrooms)$2,250$3,000$4,050$2,650
About 180,000–199,000 BTU (2–3+ bathrooms)$2,750$3,150$4,400$2,800

Local labor: what plumbers earn here

Hourly wagePortland metroUnited States
25th percentile$35$24
Median$49$31
75th percentile$62$41

The Portland market

In Portland, Permitting & Development lists water heater replacement as plumbing permit work, and furnaces, heat pumps and AC condensing units as mechanical permit work. Fees follow the city's plumbing and mechanical schedules effective July 10, 2026, with minimums of $161 (plumbing) and $167 (mechanical), and the State of Oregon adds a 12% surcharge. Every permit closes with a final inspection: 399 for plumbing, 699 for mechanical. The recorded owner (not an LLC) may permit their own work; contractors need an Oregon State Plumbing Board license for plumbing or a CCB license for mechanical. Across Oregon, EIA's 2020 housing survey found electricity slightly ahead of gas as the main heating fuel (45% vs 41%), only 49% of homes with central air, and 65% heating water with electricity. Addresses on the Washington side of the metro follow their own city or county rules.

A gas tankless unit makes most sense in Portland homes that already have gas, which about a third of Oregon water heaters use. Moving from a tank to tankless usually means a new vent route and sometimes a larger gas line. An electric tankless model can overload an older panel, and that assessment belongs to a licensed electrician. Get the vent path and any gas pipe resizing written into the quote.

Permits in Portland

Permit for this jobYes (source)
FeeFixture/item-based fees per City of Portland Plumbing and Mechanical Permit Fee Schedules effective July 10, 2026. Individual water-heater and furnace/heat-pump line amounts could not be reliably extracted from the PDFs. Lines confirmed: plumbing valuation-table 'Minimum Fee $161.00'; mechanical 'Minimum Fee $167.00'; mechanical one & two family dwellings '60% of total mechanical permit fee';…
Who can pull itHomeowner allowed (recorded owner, not an LLC) or licensed contractor
InspectionYes

Rebates in Oregon

HEAR: announced, not open yet. HOMES: announced, not open yet. Source: Oregon Department of Energy, checked October 13, 2026.

  • Energy Trust of Oregon: Heat pump, HPWH and efficiency incentives for PGE, Pacific Power, NW Natural, Cascade, Avista customers

What these programs cover, and other states

Other systems in Portland

Gas tankless water heater cost in other metros

Sources