Tankless Water Heater
A tankless water heater is often a great option for residential and even commercial use. Commonly referred to as on-demand water-heating units, tankless water heaters use gas or propane and only power on when the user turns on a faucet or appliance that uses hot water, resulting in significantly less energy use than standard water heaters with tanks. Tankless units do not store hot water in large tanks, so they are much smaller and energy efficient. Tankless water heaters employ heating coils to warm water. It’s important to remember that heating water in the typical home takes up to 20 percent of a home’s energy costs.
Advantages of A Tankless Water Heater
Tankless water heaters offer significant energy savings, using as much as 30-50 percent less energy, which saves an average household $100 or more a year. The savings every day adds up and more than makes up for the higher initial cost of a tankless water heater.
- The unit is much smaller, saving space in a home.
- The unit mounts on a wall, freeing up space below the unit.
- The unit is rectangularly shaped, preferable to a space-wasting cylinder geometry of a tank on a regular water heater.
- Often there is less maintenance, fewer malfunctions and no corrosion problems, which often plague the steel tanks storing water in conventional systems.
- No flooding risk from tank failure.
- A tankless water heater may last up to twice as long as conventional tank water heaters.
- Unlike a traditional hot water heater, tankless water heaters have an unlimited hot water supply, which is helpful when filling a hot tub or soaking tub, for instance.
Disadvantages of Tankless Water Heaters
The upfront cost is higher than a regular water heater with a tank.
Users will receive continuously flowing hot water unless the user is operating multiple hot water faucets and appliances such as a dishwasher. Some families, however, report no problems when drawing from multiple hot water outlets. The flow of hot water is typically 3.5 gallons per minute. These units are most useful for homes that are already using natural gas to heat water, rather than electric, which may require a large upgrade in service to accommodate a tankless water heater.
Tankless water heaters have burners that operate at high power and frequently need a wider diameter venting pipe.