We now have an 80-gallon capacity indoor domestic hot water heat pump available. Our model uses R-134A refrigerant, which is better known for having higher water temperatures and lower operating pressures than R-410A-based designs, which are more frequently employed by competitors. With a heating capability of 7600 BTU and an additional 1.5 kW of electric backup when needed, it can create water temperatures between 100 and 140°F. Features a magnesium anode, two inches of high-density foam insulation, and only needs 120V to run. Compared to most comparable models, our larger tank size enables more showers and baths, which should be enough for a typical family with four people.