Residential Tankless Water Heater
Tankless water heaters only provide hot water when it is needed. There is no standby energy loss as with stored water heaters. This can save you money over the long-term.
Residential tankless water heaters operate by heating water without a tank for storage. When the hot tap water valve is opened, cold water makes its way through a pipe into the heater. Either an electric element or a gas burner warms the cold water. Thus, a steady supply of heated water gets delivered. There is no need to wait for a tank to fill with an adequate amount of hot water. However, the output from this type of unit limits the flow rate.
Tankless water heaters usually provide about 2-5 gallons of hot water each minute. The gas-fired units offer higher flow rates than standard electric versions. But sometimes even the biggest, gas-fired models underperform. They can’t always generate enough hot water for multiple, simultaneous uses throughout a large household. For instance, if someone is taking a shower, while the dishwasher is running, this can stretch the unit to its limit. The solution is to install multiple tankless water heaters. Separate units can be used for appliances that use a lot of water, like a dishwasher or clothes washer.