Hot Water List

Smart Solar water heaters

3 basic models.

Certified figures by basic model

Smart Solar basic models and their certified figures
Basic modelTypeStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyModel numbers
SSG2-ES 120 Heat pump 1202.8583287% SSG2-ES 120
SSG2-ES 65 Heat pump 652.5246260% SSG2-ES 65
SSG2-ES 80 Heat pump 802.7155277% SSG2-ES 80

A range means the models under one basic model differ. A dash means the model has no such figure.

Hot water out per unit of energy in, called UEF, reaches 2.85 among Smart Solar models. This UEF belongs to a heat pump, which moves heat from the air. The SSG2-ES 120 is the one basic model of this brand with that UEF. Not one of its basic models lacks an ENERGY STAR certified model.

This brand lists one type of water heater: heat pump. The SSG2-ES 120 holds this brand's highest first-hour rating: 83 gallons. In the test, a full tank reheats while those 83 gallons are drawn.

On this site, only this brand lists these basic model numbers.

Updated Oct 2, 2026 · Methodology