California regulators have expanded the state’s California Solar Initiative Thermal Program in an effort to provide enhanced incentives for solar heating and cooling technologies
The Energy Star-rated NRC98, the newest addition to the Noritz ecoTOUGH Series of gas-fired residential condensing tankless water heaters, has an Energy Factor of 0.93
Among heat pump water heaters, the Stiebel Eltron Accelera 300 has the largest capacity (80 gal.), highest energy factor (2.51), lowest power input (2.2 kW) and lowest power consumption