Signs you need this fixed
- Tea-coloured hot water, clear cold
- Tank knocks like a radiator in January
- Pilot flame dies a minute after lighting
- Showers go lukewarm by the second rinse
Why sediment builds up
Lake Ontario water carries dissolved calcium and magnesium. When water is heated, some of it falls out of solution and settles on the bottom of the tank as a grit layer. On a gas tank, that crust ends up between flame and water. The burner has to work harder, the steel bottom overheats, and you hear a crackle like popping corn. In electric tanks, sediment buries the lower element and burns it out.
The flushing process
- Set the gas dial to pilot, or trip the breaker if the tank is electric.
- Shut the cold inlet above the heater.
- Open any hot tap upstairs to break the vacuum.
- Run a hose from the tank's drain cock over to the floor drain.
- Crack the drain cock and allow the tank to empty. Watch the colour.
- Crack the cold inlet in brief bursts to churn up grit and wash it out.
- Close the drain, refill the tank until hot taps run steady, then restore heat.
Anode rod checks
Inside the tank is a sacrificial anode rod, usually magnesium or aluminium. It corrodes so the steel tank does not. Once the rod is eaten down to bare wire, the tank starts to rust. Checking it every few years and replacing it when worn is one of the best ways to extend tank life. Removing the old rod takes a large socket and some force; in tight basements we use a flexible segmented rod.
How often to do it
Once a year suits most Toronto homes. If you have a water softener, sediment is lower but anodes wear faster, so check the rod more often. If your heater is old and has never been flushed, the drain valve may clog or leak when opened. We bring a replacement valve. Plastic drain valves on older tanks are fragile, and a brass one is worth the swap.
What is included on the visit
Tools on the truck
- Combustion and draft gauge
- Pipe cutter, press tool and dielectric unions
- Hose, pump and descaling kit
What we open
Burner access panel, drain valve and the T&P discharge
How we test it
Recovery timing, draft at the hood, soap on every new joint
How the job runs
Ring the line
Say what is dripping, backing up or banging. Water still flowing? We guide your hand to the valve first.
Find the cause
The plumber traces the fault, with a scope or gauge where one earns its keep.
Pick the fix
Options come in everyday language, and nothing starts until you choose.
Repair & prove it
We finish, run the water to prove it, wipe up and leave a short written record.
Calls we field, answered plainly
Can I flush a rental water heater?
Most rental agreements put maintenance on the provider. Call them first, or check your contract.
How do I know if the anode rod is done?
When it is thinner than a pencil or shows bare steel wire along its length, it is due for replacement.