Common faults we repair
- Pilot that will not stay lit, usually a thermocouple or flame sensor
- Power-vent blower or pressure switch faults
- Burnt electric elements or tripped high-limit switches
- Temperature and pressure relief valves that drip
- Leaking drain valves at the base of the tank
When repair is not worth it
If water is leaking from the tank shell itself, no part will fix it; the inner lining has corroded through. We will tell you plainly and point you to replacement.
How we diagnose
- Check the gas supply or breaker and the thermostat setting.
- Observe the ignition sequence and read any status light codes.
- Test the thermocouple, elements or switches with a meter.
- Inspect venting and combustion air on gas units.
- Replace the failed part and run a full heating cycle.
Maintenance helps
Hard water in York Region leaves scale in tanks. Annual water heater flushing and an anode check extend the life of a tank considerably. See our bulletin on water heater maintenance.
The short version
Tell-tale signs
- Puddle under the tank, or the relief valve dribbling
- Showers go lukewarm halfway through
- Pilot will not stay lit after a few tries
- Hot side smells of sulphur or runs orange
Kit on the van
- Appliance dolly and straps for the old tank
- Draft gauge and a combustion analyser
- Anode socket on a breaker bar
- Garden hose for draining to the floor drain
How we go about it
- Fire it up and smoke-test the vent hood
- Soap every joint and leave the burner cycling
- Valve off gas or flip the breaker, then close the cold
- Hose the tank down to the floor drain
Your questions, answered plainly
Can you repair rented heaters?
Repairs on a rented tank normally fall to the rental firm; call them first, as their terms may require it.
Why does my hot tap only run tepid?
On electric heaters, a failed lower element is a frequent cause; on gas, a thermostat or dip tube problem.