Locate the Leak Before Panicking
A.O. Smith makes reliable water heaters found in many Greater Vancouver homes, but tanks and valves wear out eventually. A leak is a signal, not always a death sentence for the unit, so the smart first move is to find precisely where the water is coming from.
Wipe everything dry, including the floor, then watch for the first place moisture returns. The common leak points are the drain valve at the bottom, the T&P relief valve and its discharge line, the inlet and outlet fittings on top, and the tank shell itself.
Keep in mind that water follows the path of least resistance and pools at the lowest point, so a wet floor can be misleading. Follow the trail upward to where dry metal becomes wet, and that is your real source.
What Causes A.O. Smith Leaks
T&P relief valve discharge. This safety device protects against excess temperature and pressure. It can drip because the valve itself is worn, or because pressure or temperature is genuinely too high, the latter being common with Metro Vancouver's higher water-main pressures. Never simply plug it; the cause must be found.
Drain valve seepage. The bottom valve can fail to reseal, particularly after a maintenance flush, and is usually an easy repair.
Connection corrosion. Over years, the threaded fittings at the top can corrode or loosen, allowing slow weeps.
Internal tank failure. A.O. Smith tanks rely on an anode rod to fend off corrosion. When that rod is exhausted, the steel tank corrodes and eventually leaks. A leak from the body or a weld seam means the tank is finished and must be replaced, not repaired.
Safe Actions You Can Take
For any active leak, close the cold-water shutoff valve on the pipe entering the top of the heater to stop the tank from refilling. On a gas A.O. Smith model, set the gas control to OFF or PILOT; on an electric unit, turn off its breaker. This stabilizes the situation so it can be assessed safely.
Lay dry paper towel beneath each candidate leak point and recheck within an hour to confirm where the water originates. If a connection is plainly loose, you may carefully snug it, but do not force it, as overtightening can crack brass or strip threads. When in doubt, stop and call.
Gas-side components, the burner, and the controls must be handled by a licensed gas fitter. British Columbia law requires certified technicians for gas appliance work, both for safety and to keep your warranty intact.
It also helps to know your unit before you call. The rating plate on the front of an A.O. Smith heater lists the model number, serial number, tank capacity, and gas input rating. Snapping a quick photo of that plate gives us everything needed to confirm warranty status and bring the correct replacement if the tank has failed. While you are there, check that the area around the heater is clear and dry so a technician can work safely and access the connections without obstruction.
Fix It or Replace It, and Who to Call
Valve, drain, and fitting leaks are typically repairable and affordable. A leak from the tank body is not repairable, and on units past roughly a decade, replacement is the sensible path. Many A.O. Smith residential models carry a 6-year limited tank warranty, with longer-warranty lines available, so check the rating-plate serial for the build date before buying new.
In Greater Vancouver, water heaters are serviced by our parent company, CanroHeat. Repair costs range from a small valve fix to a full tank replacement, and same-day replacement is frequently available when a tank fails. Because every situation differs, we provide an exact quote only after inspection, so call 604-359-1081.
If you ever smell gas by the unit, do not operate any switches. Leave the home, call FortisBC at 1-800-663-9911 or 911 from outside, then call us at 604-359-1081.