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18kW Tankless Electric Water Heater, 240V, 4.3 GPM, WiFi

WINTEMP ★ 3.6/5 · ItemOracle Score Premium

$270 USD
Price subject to change
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18kW Tankless Water Heater Electric 240V WINTEMP, On Demand Instant Hot Water Heater, Up to 4.3 GPM, with LED Temperature Display, Whole House Hot Water Supply, WiFi Control, ETL Certified

Compact tankless electric water heater for whole-house hot water. Auto-adjusting temp and WiFi control with LED display; suitable for residential showers. Some users report stable temperature while others note swings

Highlights

  • wifi-enabled control
  • on-demand hot water
  • even temperature adjustment

Pros

  • compact size
  • wifi control
  • automatic temperature adjustment
  • high flow up to 4.3 GPM
  • LED temperature display

Cons

  • mixed temperature stability feedback
  • requires specific electrical setup (2x 40A breakers, appropriate wiring)

Best For

  • single-family shower
  • small home bathroom
  • shop or workshop hot water needs
  • office bathroom
  • basement or apartment heating水

Features

  • Rated 18 kW (240V) with up to 75A; requires 2 x 40 Amp DP breakers and 2 x 8/2 AWG wiring with ground
  • Dimensions: 11.1 W x 19.1 H x 4 D inches; water connection: 3/4 inch NPT
  • Hot water output up to 4.3 GPM with stable temperature and no preheating wait
  • Self-regulating, energy-saving operation adjusts power based on real-time flow and temperature
  • WiFi-enabled control with LED temperature display; ETL certified for whole-house hot water supply

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