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Federal Way Water Heater Replacement: When to Replace and Who to Ask

Many Federal Way homes are on their first water heater's last year. Here is how to decide whether to replace now, and which local offices to check along the way.

Published October 15, 2026 · Andy's Plumbing & Drain

AWritten and reviewed by Andy Anglin, owner of Andy's Plumbing & Drain. Washington licensed plumber with 25+ years in the trade, serving Pierce County and South King County. General information, not a diagnosis of your home. Questions? Call (253) 386-5365 or book a free estimate.

Federal Way grew mostly through 1980s and 1990s subdivisions, which means a large number of homes were fitted with their first water heater around the same period. Those original tanks are now at or past typical replacement age. If you own one of these houses, the useful question is not whether the heater will need replacing, but whether you do it on your terms.

Who is who in Federal Way

Local contacts are a little different here than in many cities. Water and sewer service comes from Lakehaven Water and Sewer District, not directly from the city, and Puget Sound Energy supplies gas. Permits for plumbing, mechanical, building, and electrical work go through the City of Federal Way Permit Center, and residential plumbing permits can be applied for online through MyBuildingPermit. Knowing which office handles what saves you from calling the wrong one when you have a question.

Signs it is time

  • The heater is original to a 1980s or 1990s home and has never been replaced.
  • Rust-colored water at the hot tap only.
  • Moisture or staining at the base of the tank.
  • Rumbling or popping when it heats.
  • Hot water that runs out sooner than it used to.

Our article on common water heater problems goes through these symptoms in more detail. Any leak from the tank body itself means the tank has failed and needs replacement, not repair.

Replace now or wait

If the heater is working, waiting is not unreasonable. The tradeoff is that failures rarely happen at a convenient time, and a leaking tank can damage floors and walls before you find it. Planning the swap gives you time to compare options, pick a model, and schedule around your life. If you are unsure, our water heater maintenance service looks at the unit and tells you what condition it is in.

What to check on the swap

Federal Way homes mostly have good plumbing access and standard layouts, so a like-for-like swap is often straightforward. We still check a few items every time:

  1. Venting and clearances, to be sure the new unit meets current code in its closet or garage.
  2. Expansion tank and seismic strapping.
  3. Shutoff valves. Many have not been turned in decades, and a valve that no longer closes should be replaced while the water is off.
  4. Supply connections and any corrosion on them.

Tank or tankless

If you are weighing a change, read tank versus tankless first. A tankless unit is not a drop-in swap, since it has different venting, gas, and electrical needs. We install Bradford White, Navien, Rheem, Rinnai, and Ruud. Details are on our tankless and tank water heater pages, and locally at the Federal Way water heater page and tankless page.

A quick look at the options

ChoiceGood fit whenWatch for
Like-for-like tankSame closet, same layout, want a simple swapVenting, strapping, and expansion tank
Larger or newer tankHousehold size has grownSpace in the closet
TanklessWant a smaller footprint and are ready for added workVent, gas, and electrical needs

Permits

The Federal Way Permit Center lists plumbing and mechanical permits among what it handles. Check with the Permit Center or the MyBuildingPermit portal to confirm what your replacement requires, and ask your installer who takes care of it. We will walk you through how we handle that on your job.

Questions to settle before the install day

Decide where the old unit will go, whether you want a different size, and whether anything in the closet needs to move. Clear the area around the heater, and make sure we can reach the main shutoff. If you rent the home out, tell the tenant the water will be off for part of the day. These small steps keep the swap to a single visit and avoid a second trip for something that could have been planned.

While we are there

An old heater swap is a good time to review the rest of the system. Hard-water buildup on toilet fill valves and stuck shutoffs are common in homes of this age. If we see signs of a bigger issue, we will tell you, and if not, we will leave it alone.

Get a straight answer

Tell us the year the house was built, where the heater sits, and what it is doing now. Call (253) 386-5365 or start with the instant estimate page. If the tank is leaking, shut off its water and use our Federal Way emergency plumbing page.

FAQs

Common Questions

Who provides water and sewer in Federal Way?

Lakehaven Water and Sewer District. Puget Sound Energy supplies gas.

Where do I get a plumbing permit in Federal Way?

The City of Federal Way Permit Center handles plumbing permits, and residential plumbing permits can be applied for online through MyBuildingPermit.

My heater is from the 1990s and still works. Should I replace it?

Not necessarily today, but it is likely near the end of its life. Planning the replacement avoids an emergency and a possible water-damage cleanup.

Can I swap my tank for tankless?

Often yes, but it is not a drop-in swap. Tankless needs different venting, gas, and electrical work, which we check before quoting.

Which brands do you install?

Bradford White, Navien, Rheem, Rinnai, and Ruud.

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