18kW Tankless Water Heater 240V, Whole House

Updated September 6, 2026

Condition: New Title: 18kW Tankless Water Heater 240V, Whole House Brand: SIVUATEK Model: TSB-180 ASIN: B0FW4NSTFQ Color: Gray PLEASE NOTE BEFORE PURCHASE Ensure this 18kW 240V tankless electric water heater meets your hot water demand. Requires 2 x 40-amp circuit breaker. Unit dimensions: 15.87"x11.14"x2.87"; standard 3/4" NPT water connection. ENERGY-SAVING & EFFICIENT Eliminate standby energy loss with our electric tankless water heater no preheating, zero idle power use. Reduce your water heating costs by up to 50% compared to traditional models. Compact and space-saving, it installs flexibly under-sink or on-wall. INSTANT & POWERFUL HOT WATER With 18kW of heating power and up to 99.8% thermal efficiency, this unit delivers endless hot water instantly perfect for 3 4 simultaneous usage points such as kitchen and bathroom. No more waiting, just steady hot water when you need it. SMART TEMPERATURE CONTROL Equipped with an intuitive LED display you can easily set the desired water temperature from 86 F to 131 F in precise 1 F increments. Once set, the system maintains a stable temperature output even with water pressure fluctuations. SAFE & RELIABLE OPERATION Built with advanced water-electricity separation technology to prevent scale buildup and extend lifespan. Safety features include leakage protection, overheating protection, and auto shut-off, giving you peace of mind during every use.

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