Rheem RTEX-18 Tankless Electric Water Heater (18kW, 240V)

Get hot water when you need it—fast, efficient, and endless—with the Rheem RTEX-18. Designed to fit your lifestyle, this compact tankless unit delivers consistent hot water for showers, sinks, and multiple uses around the home, all while saving space and cutting down on energy costs.

✨ Why Choose the RTEX-18
⚡ Instant, on-demand hot water with no waiting
🏠 Space-saving tankless design that installs easily
🔧 18kW, 240V system built for everyday reliability
🎛️ Digital temperature controls for precise comfort
💡 Energy-efficient performance that helps lower bills
✅ Backed by Rheem’s 5-Year Heating Chamber Warranty + 1-Year Parts Warranty

📊 Specifications
🔌 Voltage: 240V / 208V | ⚡ Amperage: 75A | 💧 Flow Rate: 0.3–7 GPM
🛠️ Recommended Breaker Size: (2x40A) | Wire Size: 8 AWG
📏 Dimensions: 18 ¼” H x 14 ½” W x 3 ½” D
🚰 Water Connection: ¾” NPT

⚠️ Important Note: Ensure your electrical panel can support this unit’s requirements before purchasing. If unsure, consult a licensed electrician.

Upgrade your home’s hot water system with the Rheem RTEX-18 Tankless Electric Water Heater—dependable, efficient, and always ready.