Is a water heater leaking an emergency?

It depends on the source. A dripping pressure relief valve or condensation is not an emergency — but you should still call within 24 hours. Water pooling on the floor from the tank itself, a burst drain valve, or water spraying from the inlet/outlet connections is an emergency — shut off the water supply immediately and call (971) 293-4200.

Can I use my water heater if it's leaking?

If the leak is minor condensation or a small drip from the T&P valve, running it briefly won't cause immediate harm — but don't leave it unattended. If the tank body itself is leaking, turn off the water supply and power/gas immediately. A tank leak means the unit needs replacement, not repair — continued use risks flooding.

Why is my water heater leaking from the bottom?

Bottom leaks usually indicate one of three things: (1) the drain valve at the base is loose or failed — tighten it or replace it ($50–$100); (2) internal tank corrosion has breached the tank floor — this requires full replacement; (3) condensation pooling at the base on a new unit or during cold startup — normal and harmless. Bottom leaks from the tank body itself are not repairable.

How long does emergency water heater repair take in Portland?

PDX Water Heater Pros responds in 1–3 hours in most Portland areas. Repairs like T&P valve replacement or drain valve repair take 1–2 hours on-site. If the unit needs full replacement, most same-day installs take 2–4 hours from arrival to hot water running.

Water Heater Leaking in Portland? What to Do Right Now

Water heater leaking is one of those problems that can range from "no big deal" to "flooding your utility room in an hour," depending on where the water is coming from. This guide helps you identify the source, determine how urgent it is, and take the right immediate steps — whether that's a simple fix or a same-day emergency call.

Water Actively Pooling? Do This First.

Turn off the cold water supply valve above or behind the water heater (clockwise to close). Then turn off power (electric: breaker) or gas (turn the dial to "Pilot"). Then call (971) 293-4200. Don't wait to diagnose — stop the water first.

IDENTIFY WHERE THE LEAK IS COMING FROM

The urgency and repair type depend entirely on the leak location. Use this guide to identify yours:

EMERGENCY — ACT NOW

Water pooling from the tank body
Spraying or gushing from inlet/outlet pipes
Burst drain valve flooding floor
Water leaking near gas valve

URGENT — CALL TODAY

Dripping T&P relief valve (discharge pipe)
Slow drip from loose inlet/outlet connection
Water seeping from bottom of unit
Intermittent dripping from tank

NOT A LEAK — WATCH AND WAIT

✓ Condensation on outside of unit
✓ Moisture near T&P discharge pipe after high-pressure flush
✓ New unit drips during first heating cycle
✓ Moisture on floor from nearby pipe sweat

Leaking from the Top

Top leaks are usually the cold water inlet or hot water outlet pipe connections. These are threaded fittings that can loosen over years of thermal expansion. Often fixable with a wrench tightening or short nipple replacement. If water is spraying forcefully, turn off the supply valve immediately.

Leaking from the Side (T&P Valve)

The Temperature & Pressure Relief valve is the brass valve on the side of the tank with a discharge pipe running down toward the floor. A slow drip from this pipe is the T&P releasing excess pressure — not a dangerous leak, but it means something is causing elevated pressure or temperature. Common causes: thermostat set too high, incoming water pressure too high (above 80 PSI), or the T&P valve itself has failed and needs replacement ($75–$150 repair).

Leaking from the Bottom

Bottom leaks have two main sources: (1) the drain valve — the spigot at the base you'd use to flush the tank. If it's dripping, try tightening it clockwise. If it leaks from the stem, a new drain valve is a quick repair. (2) Internal tank corrosion — if the tank body itself is failing at the bottom, water will seep from below the insulation. This is not repairable. A leaking tank means replacement.

HOW TO SHUT OFF YOUR WATER HEATER

1

Turn Off the Cold Water Supply

Look for the cold water supply valve directly above the water heater (or behind it on the wall). Turn it clockwise (righty-tighty) until fully closed. This stops water from flowing into the unit.
2

Cut Power or Gas

Electric: Locate the water heater breaker in your panel and flip it to OFF. Gas: Turn the thermostat dial on the gas valve to "Pilot" or fully to "Off." Do not turn off the gas main unless you also smell gas.
3

Manage Water on the Floor

Place towels or a bucket to contain standing water. If significant water has pooled near electrical outlets or your electrical panel, don't walk through it — call a plumber from outside the area and wait.
4

Call for Same-Day Service

Call PDX Water Heater Pros at (971) 293-4200. We respond in 1–3 hours in most Portland areas. Have your water heater's model/serial number ready if you can find it — it helps us bring the right parts.

REPAIR VS. REPLACE — THE HONEST GUIDE

Not every leak means a new water heater. Here's a realistic breakdown of what's fixable:

Leak Source	Repair Cost	Verdict
Loose inlet/outlet connection	$75–$150	Repair
Failed drain valve	$80–$150	Repair
T&P relief valve replacement	$75–$180	Repair
Cracked inlet/outlet fitting	$150–$300	Repair
Tank body leak (corrosion)	Not repairable	Replace
Leak + unit over 12 years old	Repair cost exceeds value	Replace
Multiple leaks at once	Unit is failing	Replace

The 50% Rule

If a repair costs more than 50% of a new unit's installed price, we recommend replacement. For most tanks over 10 years old, a single major repair puts you close to that threshold — and the tank will likely develop another issue within 1–2 years. We'll always give you both options with flat-rate prices so you can decide.

If your water heater needs emergency replacement, see our emergency water heater repair page — we do same-day replacement across the Portland metro with no after-hours surcharge. For a planned replacement, view water heater replacement options and pricing.