18kW Electric Tankless Water Heater, APUS 240V Instant On-Demand Hot Water Heater, Up to 4.4 GPM with LED Display, Energy-Saving Whole House Water Heating System, Space-Saving Design,Gray — Open-Box, 31% Off

Enjoy continuous hot water whenever you need it. The 18kW tankless water heater electric delivers up to 4.4 GPM for 2–3 uses at once, such as showers, sinks, or laundry. No preheating, no waiting, and no temperature drops

Adjust your preferred temperature between 86°F–140°F using the LED digital display with 1°F accuracy. The electric water heater built-in memory keeps your settings even after power outages. Self-modulating technology optimizes power usage based on flow rate, ensuring stable temperature and lower energy waste

Achieving 99.8% thermal efficiency, this electric hot water heater on-demand water heater heats only when water flows—cutting up to 60% on energy bills. Zero standby heat loss and an anti-scale interior extend lifespan and maintain strong performance for eco-conscious households

This tankless hot water heater ultra-slim wall-mounted heater (17.72" × 11.42" × 3.54") saves up to 90% more space compared to traditional tanks. With 3/4" NPT connections and 240 V compatibility（requires 3×40 A breakers,6×10 AWG cable), installation is easy and flexible—ideal for whole-house or point-of-use setups in bathrooms, kitchens, or laundry rooms

Engineered with 6-layer protection, including anti-leakage, overheat, and surge safeguards. The separated water-electricity design prevents corrosion and ensures long-term reliability

Endless Hot Water On Demand Enjoy continuous hot water instantly with our 18kW electric tankless water heater. Designed for whole-house use, it delivers up to 4.4 GPM (16.6 L/min) of steady, on-demand hot water—perfect for 2-3 simultaneous uses like showers, sinks, and appliances. No more waiting for a tank to refill or dealing with temperature fluctuations. Smart Control with Memory Function Set your ideal water temperature (86°F-140°F / 30°C-60°C) with 1°F precision adjustments via the easy-to-read LED digital display. The exclusive memory function saves your preferred settings, so you don’t have to reset them after power interruptions. The self-modulating heating system automatically adjusts power to match water flow, ensuring energy efficiency and consistent comfort. Energy Efficient & Cost Saving With 99.8% thermal efficiency, this heater only consumes power when water is running, eliminating standby heat loss. Compared to traditional tank water heaters, it can reduce energy costs by up to 60%. The cast aluminum heating element resists scale buildup, maintaining peak performance for years. Compact & Space-Saving Design Measuring just 17.72" x 11.42" x 3.54", this ultra-slim unit saves 90% more space than bulky tank heaters. It easily mounts on any wall and fits in tight spaces. Standard 3/4" NPT water connections ensure compatibility with most household plumbing. Safe & Reliable Protection Built with water-electricity separation technology and multiple safety features, including overheat protection, dry-fire prevention, and leakage detection, this heater ensures worry-free operation. The corrosion-resistant cast aluminum heating element enhances durability, while rigorous testing guarantees long-lasting performance. Easy Installation & Requirements Voltage: 240V, 50/60Hz Circuit Requirement: 3× 40A double-pole breakers Wiring: 6 × 10AWG wires (with ground) Water Connection: 3/4" NPT Ideal for: Homes, apartments, cabins, RVs, and point-of-use applications near showers, kitchens, or laundry rooms.