Water Heater Repair & Replacement in Lake Oswego, OR

Permits Required

Oregon requires a plumbing permit to replace a water heater, and the City of Lake Oswego Building Division issues plumbing permits for Lake Oswego addresses. We pull the permit and schedule the inspection as part of every job.

2026 Oregon Plumbing Code

The 2026 Oregon Plumbing Specialty Code took effect October 1, 2026. Every installation we do in Lake Oswego is installed and inspected to the current edition.

Seismic Strapping

Oregon Plumbing Specialty Code Section 507.2 requires water heaters to be anchored or strapped, and Clackamas County is in Seismic Design Category D. We strap with approved materials, washers at every connector, and fasteners set into framing or concrete.

Thermal Expansion

Homes on a closed system — typically those with a check valve or pressure-reducing valve on the service line — need thermal expansion protection under OPSC 608.3. Under the 2026 code, expansion tanks must be secured to the structure, not hung from the piping.

Relief Valve Discharge

The temperature and pressure relief valve must discharge through a properly sized line to an approved location (OPSC 608.5). It is one of the most common corrections inspectors flag on replacements.

Drain Pans

Where a pan is installed, the 2026 code requires its drain piping to be rated for the water heater’s temperature. On a straight replacement in an existing home, whether a new pan is required is up to the inspector.

Gas Venting & Combustion Air

Gas units need correctly sized venting and adequate combustion air. A larger or higher-input replacement often needs vent changes, and we check this before quoting.

Licensed in Oregon

Fast Water Heater Co. is licensed with the Oregon Construction Contractors Board, CCB #168049. Verify at Oregon CCB.

Emergency Same-Day Service

Encounter a leaking or cold water heater? Call us by noon for same-day service. Our team is ready to assist from 7 a.m. to 7 p.m., Monday to Friday, and 8 a.m. to 5 p.m. on weekends, without extra charges.

Expertise in Water Heater Solutions

Comprehensive services: specializing in repair, replacement, and installation of electric, gas, tank, tankless, and hybrid heat pump systems. We provide free estimates and no trip fees.

Free Estimates, No Trip Fees

We offer hassle-free, free estimates, setting us apart from typical plumbing companies.

No Extra Weekend Charges

Understanding that emergencies don’t stick to weekdays, we provide seven-day service without additional weekend fees.

Prepared Technicians

Our certified technicians, backed by extensive experience, ensure reliable service. For a smoother process, locate your water heater model and serial number beforehand.

Water Heater Repair

No hot water, a leak, a pilot that won’t stay lit, or a tripping breaker. We diagnose gas, electric, tankless and heat pump units and tell you whether a repair is worth it before any work starts.

Water Heater Replacement

A standard tank-to-tank swap typically takes 2 to 3 hours once we arrive. Every replacement includes the City of Lake Oswego permit and an install to the 2026 Oregon code: seismic strapping, thermal expansion protection where required, and a properly routed relief valve line.

Tankless Water Heaters

Tankless retrofits that need new venting or a larger gas line run 6 to 8 hours. Lake Oswego’s soft water builds scale slowly, but periodic flushing is still part of most manufacturers’ maintenance requirements and protects the warranty.

Heat Pump Water Heaters

Heat pump conversions take 4 to 6 hours, including electrical and condensate work. Energy Trust of Oregon pays $1,200 toward a contractor-installed unit rated Tier 3 or higher that replaces a standard electric water heater.

Age of the Unit

The U.S. Department of Energy puts the typical life of a tank or heat pump water heater at 10 to 15 years and a tankless unit at about 20. Near the end of that range, a major repair is rarely worth the money.

Where the Leak Is

Water coming from a fitting, valve or relief line can usually be fixed. Water coming from the tank itself means the tank is failing, and that cannot be repaired.

Parts We Commonly Replace

Thermocouples and flame sensors, gas control valves, heating elements and thermostats, anode rods, and relief valves can all be replaced on a heater that is otherwise sound.

Warranty Coverage

Find the model and serial number on the rating label. If the tank or a part is still under the manufacturer’s warranty, that can change the math.

Lake Oswego Water

Lake Oswego’s soft Clackamas River water is easy on tanks, but sediment still settles. A periodic flush keeps a tank quieter and more efficient.

Energy Trust of Oregon — Heat Pump Water Heaters

Energy Trust of Oregon pays $1,200 toward a contractor-installed heat pump water heater rated Tier 3 or higher that replaces a standard electric water heater, and $1,000 for a qualifying unit bought in store and self-installed. Applications are due within 60 days of installation. Current terms at energytrust.org.

Energy Trust of Oregon — Gas Tankless

Energy Trust pays $400 for an ENERGY STAR gas tankless water heater that replaces an existing gas storage tank. NW Natural promotes the same incentive; it is one rebate, not two.

Who Qualifies

Eligibility follows your utility, not your city. Energy Trust serves Oregon customers of Portland General Electric, Pacific Power, NW Natural, Cascade Natural Gas and Avista. Check the utility named on your bill. Incentives are subject to funding and can change.

Federal Credits Have Ended

The federal 25C energy-efficient home improvement credit does not apply to equipment placed in service after December 31, 2025, so a water heater installed in 2026 does not qualify. Oregon’s federally funded Home Energy Rebates are not yet available to homeowners. See our rebate guide.