Maintaining your tankless water heater

Gas furnace, gas fireplace, gas boiler, gas tankless, Heat pump service and install and maintenance in Victoria, Langford, Sidney, Colwood, Saanich, Sooke, North Saanich, Central Sannich

Maintaining your tankless water heater

Tankless water heaters, also referred to as on-demand or instantaneous, are becoming more common in Canadian households. They’re great for small spaces and offer efficiencies as high as 98 per cent. Better yet, a well-maintained tankless water heater can last about 20 years*—some manufacturers even offer 25-year limited warranties.

A tankless water heater doesn’t store water like a standard storage tank water heater. It heats the water only as it’s needed. Smaller than a storage tank, it can be hung on a wall.

In comparison, standard storage tank water heaters only last between 10 and 13 years. To ensure you get the most out of your tankless water heater have it serviced annually by a licensed gas contractor.

What should a tankless water heater service include?

  • checking operating and safety controls
  • testing ignition device and burner operation, clean as required
  • examining vent connector and venting system
  • flushing out heat exchanger as per manufacturer’s instructions to remove hard-water deposits as any scale build-up may cause damage to the heat exchanger


Tankless water heater safety tips

  • Inspect and keep the area around the water heater clear and free of flammable items, such as laundry, papers, boxes, solvents, propane cylinders or gasoline-powered equipment.
  • Check the fresh air supply vent (outside) for blockage such as dust, garden debris, snow, etc. and remove build-up with a vacuum cleaner or damp towel.
  • Wipe the outside surface with a damp towel to remove dust.

When to call a professional

Call a licensed gas contractor for service if you notice these signs of trouble with your natural gas tankless water heater:

  • water leaking from the unit or piping
  • dust or soot around the exhaust vent at the top of the unit
  • abnormal sounds during operation