• Shut off the water and power/gas immediately! A leak is an emergency that requires prompt action.

• Step 1: Locate the cold water inlet valve on top of the unit and turn it off.

• Step 2: For electric heaters, switch off the corresponding circuit breaker. For gas heaters, turn the gas control valve to the “Pilot” or “Off” position.

• Step 3: Call the Mas Air Home Comfort emergency hotline right away. Please note: if the leak is coming from the tank itself, a full replacement is usually required.

he average lifespan depends on the type of unit and its maintenance history:

• Storage Tank Heaters: Typically last 8 to 12 years.

• Tankless (On-demand) Heaters: Can last 15 to 20 years with proper maintenance.

• When to replace: If your unit is over 10 years old and experiences frequent breakdowns, a significant drop in efficiency, or visible tank leakage, it is time to consider a new, energy-efficient model.

xperts generally recommend a setting of 120°F (approx. 49°C). This is the “sweet spot” for safety and energy efficiency: it is hot enough to kill harmful bacteria like Legionella inside the tank, yet cool enough to prevent scalding and minimize energy consumption.

To maximize performance and lifespan, we recommend annual professional maintenance. This includes testing the T&P Valve, flushing the tank to remove sediment, inspecting the anode rod, and checking the burner/venting systems.

Yes. We are available 24/7/365, including nights, weekends, and statutory holidays. You can contact Mas Air for help at any time.

We serve the Greater Toronto and Hamilton Area (GTHA), including Toronto, Whitby, Hamilton, Guelph, and East Gwillimbury.