Leaking Water Heater?

What to Do in the First 10 Minutes, and How to Not Overpay for the Next One

A puddle around the water heater never shows up at a good time. The first ten minutes are about limiting the damage. The next ten days are about making a smart decision, and that's where most homeowners lose money: they get one rushed quote, don't know if a permit is needed, and miss a rebate that would have covered part of the bill.

Here's the full playbook.

Minutes 0-10: Stop it

1. Cut the energy. Electric heater: switch off its breaker. Gas heater: turn the control dial to "pilot" or "off."

2. Close the cold water valve on the pipe feeding the top of the tank (clockwise). If it's stuck or leaking, shut off the main water valve for the house.

3. Clean up. Mop the water, run a fan, and move anything absorbent off the floor. Mold can start within a day or two.

If the floor is wet and the heater is electric, turn off the breaker before you step near it.

What the leak location tells you

• Pipe connections on top: usually a loose or corroded fitting. Often a modest repair.

• T&P relief valve or its discharge pipe: the valve is a safety device. It could be worn out, or your home's water pressure may be spiking. Have a plumber check it, and never cap it.

• Water pooling under the tank: the steel tank has corroded through. It can't be patched. Replace it.

• Damp spots that dry up: may be condensation, not a leak. Watch it for a day.

Repair or replace?

Replace if the tank itself is leaking, if the heater is around 10-12 years old, or if the repair costs a large share of a new unit. Repair if it's a young heater with a bad valve or fitting.

Step 2: Find out what replacement should cost at your address

This is where most people get stuck. Prices vary a lot by city, by heater type, and by how complicated the install is. A quote of "$X" means nothing until you know what's normal for your home.

On Estq, you enter your address and choose the job type. You'll see the estimated price range for your area, based on local labor and material costs and real contractor data. Use it as your benchmark before you call anyone.

Heat pump models cost more upfront but use far less electricity, so they can pay back over time, especially once rebates are counted.

Step 3: Check permits before you hire

In most California cities, water heater replacement requires a permit and an inspection. Inspectors check the gas connection, venting, relief valve piping, and earthquake strapping. A good contractor pulls the permit for you.

It matters later, too. Unpermitted work can complicate insurance claims and show up when you sell.

Estq shows the permit history for your address, so you can see what work has been documented on your home (including your existing water heater) and what your city expects.

Step 4: Look for rebates before you buy

Heat pump water heaters are the most likely to qualify for incentives, and some programs require approval or specific models before installation. Buying first and applying later can cost you the rebate.

Estq lists the rebates available for your address, so you can check eligibility while you're still comparing options.

Step 5: See what your neighbors did

One of the most useful ways to sanity-check a quote is to see real work nearby. Estq's nearby projects map shows completed jobs around your address, so you can see what similar homes paid and who did the work.

Step 6: Compare quotes properly

• Get two or three written quotes for the same type and size of heater.

• Confirm each includes the permit, removal of the old unit, and code-required parts (straps, expansion tank, valves).

• Check the contractor's license and insurance.

• Compare the workmanship warranty, not only the manufacturer's warranty.

The cheapest quote is often cheapest because it leaves things out.

Make the next one last longer

• Flush the tank yearly to clear sediment.

• Have the anode rod checked every few years. It's cheap compared with a new tank.

• Test the relief valve as the manufacturer recommends.

• Know where your shutoff valve is.

Quick FAQ

Can I keep using a leaking water heater?
Not if the tank is leaking. It will get worse and can fail suddenly.

How fast do I need to act?
Shut off water and power immediately. If the tank is leaking, call a plumber the same day.

Will insurance cover it?
Policies often cover the resulting water damage but not the heater itself. Check yours.

Get the numbers for your home

Enter your address on Estq to see estimated replacement costs, permit history, available rebates, and nearby projects, all in one place, before you call a contractor.