Tankless Vs Tank Water Heater Efficiency

Gas tankless water heaters produce a higher flow rate than that of electric water heaters.

Tankless vs tank water heater efficiency.

Water heaters with tanks. The doe notes that storage tank water heaters typically last 10 to 15 years while most tankless units have a life expectancy of 20 years or more. While tankless water heaters run more efficiently than storage tank water heaters replacing a tank water heater with a tankless can be expensive and the payback time can be longer than the. Although the highest efficiency storage tank units might be comparable to tankless units in the percentage of captured heat energy that doesn t tell the whole story.

Homeowners with on demand tankless water heaters that use less than 41 gallons or less of hot water each day enjoy between 24 and 34 percent more energy efficiency than storage tank water heaters. Tankless water heaters are more compact and can heat up water as you use it. Although they require fewer btu h to operate storage tank water heaters generally have higher operating costs because they heat and reheat water to a preset temperature regardless of a home s hot water demand. A flow rate is just the gallons used per minute.

Tankless water heaters are more energy efficient than even high efficiency storage tank water heaters. If you use lots of hot water daily around 86 gallons you might enjoy energy efficiency of an additional 8 to 14 percent.