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Plumbing > Gas Water Heater > Tankless Water Heater

TANKLESS WATER HEATERS

Fast and energy efficient hot water

Tankless Water HeaterTankless (demand or instantaneous) water heaters provide hot water only as needed. There is no storage tank and no standby heat loss, which saves energy.

Hot water on demand. When a hot water tap is turned on, cold water enters the unit. A gas burner or an electric element heats the water as it flows through the system. There’s no waiting for a storage tank to refill.

Tankless water heaters usually provide hot water at a rate of 2–5 gallons (7.6–15.2 liters) per minute, and gas-fired versions produce higher flow rates than electric ones.

Tankless water heater limits. In a large household, the biggest, gas-fired model cannot supply enough hot water for simultaneous, multiple uses. For example, Electric Water Heatertaking a shower while running the dishwasher may tax a tankless water heater. You can install two or more tankless water heaters, connected for simultaneous demands of hot water, installed or separately for appliances—such as a clothes washer or dishwater.

Cost versus energy savings. Tankless water heaters cost more than conventional storage tank water heaters. But they can be 24%–34% more energy efficient than tank water heaters if your home uses 41 gallons or less of hot water each day. And you can be 27%–50% more energy efficient if you install a demand water heater at each hot water outlet.

Save space. Another benefit of a tankless water heater is size. Since there is no storage tank, it can easily fit into a much smaller space than a conventional water heater.

Contact your local Rescue Rooter® home plumbing specialist today to find out more about energy savings with tankless water heaters.

Click for more information on Gas Water Heaters and Electric Water Heaters.


 


 

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