Safety boundary: Flushing, anode work and descaling can cause burns, leaks or damage when done incorrectly. Follow manufacturer instructions or hire service.
Inspect surroundings
Keep the area clear, watch for corrosion and moisture, ensure vents and drains are unobstructed and listen for changes.
Tank sediment
Minerals can settle in storage tanks. Whether and how to flush depends on model, water conditions, age and maintenance history. Disturbing a neglected old valve can create a leak.
Tankless service
Inlet screens, condensate systems and mineral scaling may require model-specific maintenance. Water hardness and usage affect intervals.
Record dates
Keep installation, service, anode, flush or descaling dates together. A maintenance history supports warranty claims and replacement planning.
Useful questions to record
- Is the problem at one fixture or throughout the home?
- Is there active leakage or relief-valve discharge?
- What fuel, capacity and age is the unit?
Related guides
Tank, Tankless and Heat-Pump Water HeatersA Canadian comparison of storage tanks, on-demand systems and heat-pump water heaters.Sizing a Water HeaterHow first-hour delivery, recovery and peak demand matter more than tank volume alone.No Hot Water or Inconsistent TemperatureSafe observations that distinguish whole-house, fixture and capacity problems.Water Heater Leaks and MoistureHow to identify the source area and protect the building without unsafe repairs.