Signs you need water heater repair
- No hot water at all, or water that turns lukewarm halfway through a shower
- Popping or rumbling from the tank as it heats
- Rusty or cloudy hot water while the cold runs clear
- Water pooling in the drain pan or on the floor around the base
- A pilot flame that dies, or an igniter that clicks and never lights
Why it happens in Scarborough homes
Most houses in Scarborough run a natural gas tank in the basement, often a rental unit. Electric tanks turn up in condos, some townhouses and homes without a gas line. Both types suffer from the same local enemy: mineral sediment. Toronto's water carries enough calcium to settle a layer on the tank bottom, which insulates the burner from the water and causes that popping sound.
Gas units also depend on proper venting. A blocked or disconnected vent can trip the safety controls and shut the heater down, which is exactly what it is meant to do. Birds' nests and loose vent connections both turn up on local service calls more often than people expect.
How the job is done, step by step
- We confirm whether the tank is gas or electric, owned or rented, and how old it is from the serial plate.
- On gas units our tech looks over the pilot assembly, thermocouple, flame sensor, gas valve and venting.
- On electric units we test the elements and thermostats with a meter.
- We test the T&P relief valve, look over the drain valve, and pull the anode rod for a look when it is reachable.
- Failed parts are replaced, the tank is relit or re-energized, and we watch a full heating cycle.
What changes the cost
Parts are usually the smaller part of the bill. What matters most is whether the fault is a simple component, like a thermocouple or an element, or a control valve that has to be ordered. Once the tank shell itself leaks, no repair will hold. At that point the conversation moves to gas water heater replacement or an electric equivalent, and age is a fair guide to whether a repair is worth the money.
When to call right away
Gas odour by the heater? Everybody out, then ring Enbridge Gas from the sidewalk before anyone else. If the relief valve sprays or the tank leaks steadily, shut the cold feed and turn the gas dial down to its pilot setting. While you wait, a quick leak check on the rest of the house does no harm.