Heating & Cooling

Water Heaters – Tankless

Heating water accounts for about 20 per cent of a home’s energy expense. Tankless water heaters heat water as it flows, and only when required, using an electric element or gas burner. They provide endless hot water and the heat-on-demand feature means you only pay to heat water as you use it, instead of paying to keep a tank of water heated 24 hours a day, 365 days a year.

What to Look For

  • ENERGY STAR® certified tankless water heaters uses 30 per cent less energy, on average than heaters with storage tanks.
  • Consider models with an efficiency rate of 80 per cent or higher.
  • Buy the right size for your needs. Consult an experienced plumber to estimate the hot water demands in your home.

Things to Consider

  • Tankless units are more efficient than heaters with storage tanks, but the cost to purchase and install is higher.
  • Hire a certified HVAC technician to install the unit so that you are eligible for all warranties.
  • Tankless units save space. Wall-mounted units can be hung on almost any wall, including a wall close to the point of use.
  • Have your unit serviced every year or two by a qualified professional. Consult your owner’s manual for details.
  • Before you buy, check with your municipality or retailer to see if rebates are available.


$1,000 to $2,800

Source: Natural Resources Canada