The APUS 27kW electric tankless water heater is a powerful 240V unit designed for whole-home or multi-point use, providing endless on-demand hot water up to 6.5 GPM. It suits homeowners replacing bulky tank systems, especially in homes with 3-4 bathrooms or high-demand setups like simultaneous showers and dishwashing.
Standout features include rapid heating via cast aluminum elements, precise 1F temperature adjustments from 86F to 140F on an LED display, and a memory function that retains settings after power outages. Users praise its reliable performance with comments like 'works great' and 'easy to install,' delivering consistent hot water without cold spots. Self-modulating technology ensures efficiency at varying flows.
Its slim 17.72 x 11.42 x 3.54-inch footprint mounts easily on walls, saving 90% space over tanks. The corrosion-resistant gray sheet metal build with water-electricity separation adds durability and safety through overheat, dry-fire, and leak protections.
Drawbacks include hefty electrical needs: three 40A breakers and 6x8 AWG cable, which surprised some installers upgrading from single-breaker tanks. High-flow scenarios like filling a large tub may not hit 140F if incoming water is cold, and a few noted slightly reduced pressure.
Overall, this heater excels in efficiency and convenience for modern homes, earning solid feedback for value. Ideal if your panel supports it; otherwise, consider professional wiring.
