APUS 27kW Tankless Electric Water Heater — On-Demand, 6.5 GPM, Memory & LED Display

Endless On-Demand Hot Water for Your Home

APUS delivers a powerful 27kW electric tankless water heater that provides hot water instantly at up to 6.5 GPM. It supports 3-4 simultaneous uses—ideal for showers, sinks, and appliances without waiting for a tank to reheat. The advanced cast aluminum heating element responds quickly, delivering consistent warmth with no cold snaps.

Smart control with memory function makes temperature management straightforward. Use the LED display to set a precise temperature from 86°F to 140°F in 1°F increments. When power cycles occur, the unit remembers your preferred settings, while self-modulating technology helps optimize energy use, aligning performance with demand.

Compact, Space-Saving Design

The unit measures 17.72" x 11.42" x 3.54" and fits into tight spaces, saving around 90% more room than traditional tank heaters. It uses standard 3/4" NPT connections and 240V operation, making installation practical for whole-house or point-of-use setups. Note that installation requires three 40A breakers and 6 AWG cable.

Efficiency That Adds Up

With 99.8% thermal efficiency, the heater heats water only when you need it, reducing energy use and expenses. The design eliminates standby loss and leverages an anti-scale cast aluminum element for durability and ongoing savings.

Safe, Durable Operation

Key safeguards include water-electricity separation, plus protection against overheating, dry-fire, and leakage. The corrosion-resistant cast aluminum housing is built to endure regular use and challenging conditions in homes.

Two Practical Benefits at a Glance

• Endless hot water on demand for busy mornings and multi-use households
• Space-saving footprint that fits compact utility spaces

Design and Installation Tips

• Plan for 3 x 40 A breakers and 6 AWG cable for a safe electrical supply
• Use standard 3/4" NPT connections to integrate with existing piping