Buy On Demand Hot Water Heater -

: High-BTU gas units often require up-sizing existing gas lines to 3/4-inch or larger.

Tankless or Demand-Type Water Heaters - Department of Energy

: Whole-home electric units can pull up to 120 amps, requiring a 200-amp service panel.

: High-BTU gas units often require up-sizing existing gas lines to 3/4-inch or larger.

Tankless or Demand-Type Water Heaters - Department of Energy

: Whole-home electric units can pull up to 120 amps, requiring a 200-amp service panel.