Seattle, WA · Licensed & insured
Water Heater Repair & Replacement in Seattle
No hot water, a leaking connection and a leaking tank are different faults. Start with the affected fixtures, heater model, fuel and actual leak location. Compare a documented repair with replacement, including sizing, access and Seattle-area permit requirements, before choosing new equipment.
Signs you need us today
- Hot water runs out far faster than it used to
- Rusty or metallic-smelling hot water
- Rumbling or popping from the tank
- Water pooling under the tank
- Pilot light that will not stay lit
- The unit is over ten years old
How the job runs
- 1DiagnoseThermostat, element, gas valve, thermocouple or tank failure — identified before we quote.
- 2Repair or replace, honestlyIf a $200 part buys you three more years we say so instead of selling a tank.
- 3Size it rightReplacements are sized to your household and fuel type, tank or tankless.
- 4Permit and haul awayInstalled to Seattle code with expansion tank and seismic strapping, permit pulled, old unit removed.
Seattle homeowner guide
No hot water does not automatically mean a new tank
If every fixture has lost hot water, the heater or its energy supply is a likely starting point. If only one shower is cold, the fixture's mixing valve may be the problem instead. A tank that leaks from its shell is different from water at a connector, drain valve or relief-valve discharge; the source needs to be identified before a replacement is recommended.
Have the model number, fuel type and installation date ready if available. Do not remove energized covers, bypass a safety control, cap a relief valve or attempt gas repairs. If there is a gas smell, leave and contact emergency services or the utility from a safe location. If water is leaking near electrical equipment, stay clear and get professional help.
Choosing a tank, tankless or heat pump water heater in Seattle
A replacement should match peak household demand, not just the old tank's gallon size. Ask about first-hour delivery for a tank and simultaneous flow demand for tankless equipment. Two showers running together, a soaking tub or a newly added bathroom can change the sizing calculation even when the number of residents stays the same.
Gas tankless equipment may need changes to gas supply, venting and condensate drainage. A heat pump water heater needs an appropriate location, air volume, clearances and a condensate route; noise and electrical requirements also matter. In a Belltown or South Lake Union condominium, confirm whether hot water is supplied centrally before arranging an in-unit equipment replacement.
Permits, access and the written installation scope
Public Health – Seattle & King County requires permits for replacement water heaters starting July 1, 2026, generally an over-the-counter plumbing permit. Electrical, gas or mechanical work can add requirements depending on the equipment. Ask who obtains the applicable permits and inspections and whether they are included. An equipment swap and a fuel conversion may have different scopes.
The estimate should address removal of the old unit, shutoff valves, required safety provisions, venting or electrical changes and access through stairs or a narrow utility room. Ask how long the home will be without hot water and what manufacturer warranty and installation warranty are offered separately.
Details to have ready when you call
- Is every fixture affected or only one shower or tap?
- What are the model, fuel type and tank size?
- Is the leak from the tank shell or a connection?
- Is hot water individual to the unit or shared by the building?
Seattle references: SPU side-sewer responsibilities and permits · Current side-sewer application process. · Public Health plumbing and water-heater permits · SPU meter and leak checks.
What this costs in Seattle
Illustrative planning ranges, not verified local market averages or a binding quote. Access, diagnosis, permits and restoration affect the price. Confirm the current charges before booking.
| Job | Typical range |
|---|---|
| Diagnostic / minor repair | $150 – $450 |
| Thermostat or heating element | $200 – $500 |
| 40–50 gal gas tank replacement | $1,800 – $3,200 |
| 50 gal electric tank replacement | $1,600 – $2,800 |
| Tankless install (gas) | $4,000 – $7,500 |
| Heat pump water heater | $3,200 – $5,500 |
Questions Seattle homeowners ask
- Is tankless worth it in Seattle?
- It is if you are short on space, run out of hot water regularly, or plan to stay in the home ten-plus years. If you are replacing a working-sized tank and staying three years, it usually is not.
- Do water heater swaps need a permit in Seattle?
- Public Health – Seattle & King County requires permits for replacement water heaters starting July 1, 2026. Ask the installer to identify the plumbing permit and any applicable electrical, gas or mechanical approvals and confirm who handles inspection.
- How fast can you replace it?
- Most standard tank replacements are done same day or next morning.
Covering every Seattle neighborhood
Ballard · Fremont · Wallingford · Green Lake · Queen Anne · Magnolia · Capitol Hill · Central District · Beacon Hill · Columbia City · West Seattle · Georgetown · Greenwood · Phinney Ridge and the rest of the city.
Talk to a plumber now
(206) 635-7619