Brand New RHEEM RTEX-18 Professional Classic Series

About this product

We provide reliable **tankless electric water heating solutions** designed to deliver continuous hot water whenever it is needed. Our products combine compact, modern designs with advanced digital temperature controls, allowing users to adjust water temperature precisely from 80°F to 140°F. Built with durable copper immersion heating elements and brass components, these systems are designed for long-lasting performance while maintaining up to **99.8% energy efficiency**. Easy installation, convenient digital temperature displays, and replaceable heating elements make our tankless water heaters a practical choice for both single-point and multiple water-heating applications.

• Electric Tankless Water Heater
• Electric Tankless Water Heater Miami Water Heater
• Electric Tankless Water Heater Miami

Specifications

Application

Residential (Whole House)

Installation Location

Not mentioned

Dimensions

18-1/4" H x 14-1/2" W x 3-1/2" D in

Power Input

18 KW

Voltage

240 V

Maximum Flow Rate

7.0 GRM

Minimum Flow Activation

0.3 GPM

Temperature Rise

1.5 GPM: 82°F، 2.0 GPM: 62°F، 2.5 GPM: 49°F، 3.0 GPM: 41°F، 4.0 GPM: 31°F، 5.0 GPM: 25°F F

Temperature Range

80 – 140 °F

UEF Rating

Not mentioned

Water Connection Size

3/4" NPT ( in

Operating Pressure

25 – 150 PSI

Freeze Protection

Not mentioned

Wi-Fi/App Control

Not mentioned

Warranty

Not mentioned

Weight

14.78 lbs

Digital Display

Yes

Adjustable Temperature Control

Yes

Phase

Single Phase

Certification

ETL Listed to UL 499 and CSA، WQA Certified Lead Free (NSF/ANSI 372)