Act Fast: Stop the Water and Power
A burst water heater tank releases its full capacity, often 40 to 60 gallons, and keeps refilling as long as the supply line is open. Every minute counts, so your first priority is stopping the flow of water.
Close the cold-water inlet valve at the top of the heater by turning it fully clockwise. If that valve is stuck or you cannot reach it, go to your home's main water shutoff and close that instead. This is the single most important step to limit flooding and damage.
Next, cut the energy. For a gas tank, turn the gas control knob to OFF. For an electric tank, switch off the dedicated breaker at your panel. A burner or element firing against a ruptured or draining tank is both unsafe and pointless, so shut it down before doing anything else.
Safety First: Gas, Electricity, and Water
If you smell gas at any point, stop and treat it as a life-safety emergency. Do not flip switches, unplug anything, or use a phone inside the home. Leave the house immediately, then from outside call FortisBC at 1-800-663-9911 or 911, and afterward call us at 604-359-1081.
With a flood, electricity is the next concern. Water pooling near outlets, power bars, or the electrical panel is dangerous. If water has reached any electrical equipment and you can safely shut off power at the main breaker without standing in water, do so. If not, keep clear and let professionals handle it.
Once the water is off and the area is safe, protect your property. Move boxes, furniture, and valuables off the wet floor, and lay down towels to soak up standing water. Be careful on wet surfaces, as a flooded utility room becomes a serious slip hazard.
Why Tanks Burst and What Comes Next
Water heater tanks burst for predictable reasons. The most common is internal corrosion: once the sacrificial anode rod is consumed, the steel rusts from the inside until the weakened shell finally ruptures, usually on a unit past 10 years. Excessive pressure from a failed T&P valve or thermal expansion can also stress an aging tank to failure.
A burst tank cannot be repaired. The steel shell has failed, and the only solution is replacement. The good news is that replacement is straightforward, and our parent company, CanroHeat, can often complete it the same day you call.
While we are there, we look at the underlying causes too, including water pressure, expansion control, and whether the previous installation met current code. Addressing those at replacement time helps your new tank reach its full service life instead of failing early.
Document, Replace, and Call for Help
Before cleanup is complete, take photos of the burst tank and any water damage. Your home insurance may cover water damage from a sudden failure, and clear documentation supports a claim. Keep notes on when the failure happened and what you did.
Then call CanroHeat at 604-359-1081 to arrange replacement. Tell us the brand, the approximate age, and whether it is gas or electric, so we can bring the right unit and parts on the first trip. Replacement cost depends on the unit type, size, and any required code upgrades, and we provide an exact quote after we see the situation, never a blind estimate.
If the flood reached finished space, drywall, or carpet, start drying the area as soon as the water is off. Run fans and open windows to move air, lift wet items off the floor, and pull back soaked rugs so the subfloor underneath can dry. In a damp Greater Vancouver climate, standing moisture left for even a day or two can lead to mould in flooring and wall cavities, so the faster you dry things out, the less secondary damage you face. If the water was extensive, your insurer may bring in a restoration crew, which is another reason to document everything early.
To recap the emergency steps: shut off the water, shut off the gas or breaker, leave and call FortisBC at 1-800-663-9911 or 911 if you smell gas, protect your belongings, then call us at 604-359-1081 for fast same-day replacement.