Hot Water Tank Leaking? Water Heater Leak Repair in Coquitlam

Leaking From the Top vs. Leaking From the Bottom

Where the water is coming from tells you a lot about what's actually wrong, and whether it's a quick fix or a sign you need a new water heater.

Water Heater Leaking From the Top

If your hot water heater is leaking from the top, the tank itself usually isn't the problem. The most common causes are the cold water inlet and hot water outlet connections working loose, a failing temperature and pressure relief valve (the T&P valve), or a loose connection on the expansion tank if your system has one. High water pressure in the home can also force the T&P valve to release water as a safety measure, which looks like a leak but is actually the valve doing its job. These are usually straightforward repairs, whether that means a new T&P valve or a water heater expansion tank replacement.

Water Heater Leaking From the Bottom

A water heater leaking from the bottom is more often bad news. It can be a loose or failing drain valve at the base of the tank, which is an easy fix, or it can mean the internal tank itself has corroded and is leaking from the inside out. Condensation on a new unit can also pool at the bottom of the tank and look like a leak when it isn't. If water is coming from the tank body itself rather than a valve or fitting, replacement is almost always the right call, since a corroding tank only gets worse.

Not sure which one you're looking at? Call (604) 873-3753 and describe what you're seeing. We can often tell over the phone whether it's worth a same-day visit.

What to Do the Moment You Spot a Leak

1. Turn off the water supply to the tank using the cold water shutoff valve, usually located on the pipe feeding into the top of the water heater.
2. If it's a gas water heater, turn off the gas supply at the valve. If it's an electric water heater, shut off power at the breaker.
3. Check the drain valve at the bottom of the tank to see if it's fully closed. A drain valve that isn't seated properly is a common and easy source of a leak.
4. Place towels or a container to catch water and limit damage to the floor while you wait for a technician.

Shutting off power and water supply first protects you and limits water damage until we arrive.

Hot water tank repair is often the right call. If the tank has been flushed regularly, kept dry, and the gas or electrical connections are in good shape, you may only need a new pressure relief valve, a drain valve, or an anode rod. That holds whether you have a gas or electric water heater.

Here's the rule of thumb we use: if repair costs are creeping up toward half the price of a new tank, hot water heater replacement makes more sense. Any leak coming from inside the tank itself, rather than a valve or connection, falls into this category. We'll walk you through the tank's age, its expected lifespan, and what repair versus replacement actually costs before you decide anything.

One more thing worth knowing: current BC building code requires larger ventilation piping on most replacement installs now, and a licensed gas fitter is required by law to connect both the gas and electrical on a new water heater. That's not optional, so factor it into any DIY plan. Our team at KCs holds those licenses.

Need a replacement fast? Call (604) 873-3753 for a free, no-obligation consultation.

When repair doesn't make sense anymore, our team helps you pick the right replacement tank for your home and gets it installed quickly, often the same day you call. We carry a range of energy-efficient tanks at different price points, and a newer tank typically costs less to run than one that's 10 to 12 years old.

Why Coquitlam and the Tri-Cities Call KCs Plumbing

We've been a family-run plumbing and heating business since 1993, and our gas fitters are licensed for exactly this kind of work. We're on call 24/7 for emergencies, we're BBB accredited, and we serve Coquitlam, Port Coquitlam, Port Moody, Burnaby, and New Westminster.

Read more about our team or get in touch to schedule a visit.

Frequently Asked Questions

How do I know if my hot water tank is actually leaking?

Look for rust around the top of the tank, water stains or pooling on the floor nearby, or a pressure relief valve that's stiff or hard to operate. Any of those signs mean it's time to have it checked.

What's the most common cause of a hot water tank leak?

Near the top, it's usually a loose inlet or outlet connection or a failing T&P valve. Near the bottom, it's often a faulty drain valve, though a leak from the tank body itself means the internal tank has corroded.

Should I repair or replace a leaking hot water tank?

It depends on the tank's age and condition. If repair costs are approaching half the price of a new tank, or the leak is coming from inside the tank itself, replacement is usually the better value. We'll give you a straight answer after a quick inspection.

How much does it cost to fix a leaking hot water tank?

Water heater repair cost varies with what's actually wrong, whether it's a valve, an anode rod, or the whole tank. We provide a free, no-obligation quote once we've seen the tank in person, since guessing a number without that isn't useful to you.

Do you offer emergency service for a leaking tank?

Yes. We're on call 24/7 for emergency hot water repair and other plumbing and heating emergencies throughout Coquitlam and the Tri-Cities.

Can I replace a hot water tank myself?

You can attempt it, but current BC code requires larger ventilation piping on most installs, and the gas and electrical connections must be signed off by a licensed gas fitter by law.

Stop a Small Leak Before It Becomes a Big Repair

The longer a leaking tank sits, the more water damage it can cause to your home. Call (604) 873-3753 for hot water heater repair or a free replacement consultation. We're licensed, we're local, and we've been doing this since 1993.

Written by Jack Japuncic at KCs Plumbing, Heating & Drain Services.