Guide · Hot water tanks & tankless
Water Heater Warning Signs
Rust-coloured hot water, rumbling as the burner fires, a damp ring on the floor and hot water that runs out early all point at a tank heater on its way out. Here is what each one means.
- A plumber answers when you call
- Clear price before any pipe is cut
- Basements left as clean as we found them
The Markham angle
Most Markham water heaters live in a basement, often beside finished rooms. When a tank finally lets go, its full volume can spill across the floor in a short time, and then the cold supply keeps feeding it. Catching a tired tank early turns a flood into a planned swap on a weekday morning.
Moderately hard municipal water speeds the process along. Sediment settles at the bottom of the tank, blankets the burner's heat away from the water, so the steel strains.
Step by step: what to look and listen for
- Read the label. The serial number usually hides the manufacture year. Many tanks are expected to last roughly ten to twelve years.
- Listen while it heats. Popping, rumbling or crackling usually means sediment is boiling beneath the burner.
- Check the water colour. Rusty hot water, when the cold runs clear, suggests the tank lining is corroding.
- Look at the base. Moisture, rust streaks or a damp drip pan are early signs of a leak.
- Notice the shower. A shower that turns cold earlier than last year may point to sediment or a failing element on an electric tank.
- Smell the water. A rotten-egg smell from hot taps only can come from a reaction with the anode rod.
- Check the vent. On gas tanks, scorch marks or soot at the top, or a vent pipe that has come loose, are safety concerns.
None of these signs means the tank will fail tomorrow. Together, though, they tell a story. An eleven-year-old tank that rumbles and leaves a little rust in the drip pan is asking to be replaced on your schedule rather than its own.
Slip-ups we see often
- Ignoring a dripping temperature and pressure relief valve. It may signal excess pressure or heat, and it is a safety device, not a nuisance.
- Capping the relief valve discharge pipe to stop a drip. Never do this.
- Draining an old, neglected tank for the first time without being ready to replace it. The valve itself sometimes fails to close afterward.
- Storing paint, gasoline or solvents beside a gas water heater.
Time to pick up the phone
Call right away if the tank is leaking, if you smell gas, or if the relief valve keeps discharging. Book a visit if the tank is over ten years old and showing any of the signs above. We provide water heater repair, gas tank replacement and electric water heater service. If you are renting your tank, our rent or buy brief explains your choices.
A little upkeep helps a healthy tank go the distance. An annual flush and an anode rod check every few years are the two habits that matter most.
An eleven-year-old tank that rumbles and leaves a little rust in the drip pan is asking to be replaced on your schedule rather than its own.
From the job notes of Plumbers in Markham
Guide · Hot water tanks & tankless
Signs to watch for
- Showers going lukewarm halfway through
- Rusty or cloudy hot water
Call a plumber when
- Water is reaching a ceiling, wall cavity or electrical panel
- Sewage is coming up through a floor drain or toilet
- You smell gas near the water heater: leave and call the gas utility first
- A valve will not close or a fitting keeps weeping after tightening
Markham note. Many Markham basements still have a rented tank heater. If yours is rented, the provider handles repairs under the contract; we will describe what we find and explain the buy-out and replacement options, but check the current terms of your agreement first.