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Rheem 18kW 240V Tankless Electric Water Heater

Rheem ★ 3.6/5 · ItemOracle Score Premium

$449 USD
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Rheem 18kW 240V Tankless Electric Water Heater, Gray

Rheem tankless electric water heater with external digital thermostat and LED display. Adjusts power to meet hot water demand and features durable copper immersion elements. Customer notes mixed opinions on temperature and lifespan but highlights easy installation and ample hot water capacity

Highlights

  • self-modulating power
  • LED temperature display
  • copper immersion elements

Pros

  • external digital thermostat with LED display
  • self-modulating power to match demand
  • field serviceable
  • durable copper immersion heating elements
  • simple installation with bottom water connections

Cons

  • mixed reviews on functionality and water temperature
  • lifespan concerns with failures within a year
  • some reports of slower heating

Best For

  • single-family homes with two full baths
  • replacement for older tank-style heaters
  • homes requiring unlimited hot water capacity
  • installations with bottom 3/4 inch NPT connections
  • areas needing adjustable heat with demand-based control
  • DIY-friendly installations

Features

  • External digital thermostat with LED display and +/-1 degree accuracy
  • Self-modulating power adjusts to meet hot water demand
  • Copper immersion heating elements with durable construction
  • Flow rate up to 4.4 GPM and field serviceable design
  • Bottom 3/4 inch NPT water connections for simple installation

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