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Quick specs
Power
27 kW
Type
Tankless electric water heater
Series
Rheem Professional Classic
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
RHEEM Professional Classic 27 kW Tankless Electric Water Heater 240 Volts RTEX-27
Endless Hot Water·27 kW, 240 Volts
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Secure payment
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RHEEM Professional Classic 27 kW Tankless Electric Water Heater 240 Volts RTEX-27
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
In stock
In most items, small items ship same day. Complete systems ship next business day.
-
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
Quick specs
Power
27 kW
Type
Tankless electric water heater
Series
Rheem Professional Classic
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
RHEEM Professional Classic 27 kW Tankless Electric Water Heater 240 Volts RTEX-27
Professional Classic tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications.
FEATURES
On demand, consistent and endless hot water
Compact and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F*
99.8% Energy efficient
Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement
Simple Installation
Digital temperature display
External controls to adjust temperature in increments of 1°F*
APPLICATIONS
Whole-Home – up to 6 GPM
Water-Saver Shower Head – 1.5 GPM
Standard Shower Head – 2.0 GPM
Standard Hand Sink – 0.5 GPM
Kitchen Sink – 1 to 2 GPM
Bath Tub – >= 4 GPM
Dishwasher – 1 to 2 GPM
Washing Machine – 1 to 1.5 GPM
DIMENSIONS
Height: 6.75
Length: 19.75
Width: 19.50
Key features
- Endless Hot Water — on-demand for point-of-use or multiple applications
- 27 kW, 240 Volts — Rheem Professional Classic tankless electric heater
- Digital Temperature Control — precise 1°F adjustments
- Compact and Stylish — space-saving wall-mount design
Why homeowners choose NAW
Genuine OEM parts
Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.
Easy online ordering
Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.
30-day hassle-free returns
Ordered the wrong part? Send it back within 30 days.
Help when you need it
Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
5 verified reviews
DD
Devin D
The 27KW Rheem Electric Tankless Water Heater exceeded all my expectations with its incredible performance and unbeatable price! It provides endless hot water on demand, and the energy efficiency is simply impressive, making it a must-have for any home.
LB
Levy B
I recently purchased the 27KW Rheem Electric Tankless Water Heater and was absolutely thrilled by its outstanding performance and unbeatable price. This powerhouse of a unit delivers a steady stream of hot water on demand, making it a remarkable investment for any household looking for both efficiency and savings!
RD
Rodrigo D
I recently purchased the 27KW Rheem Electric Tankless Water Heater, and the exhilarating surprise of its unbeatable price, coupled with the exceptional quality of the equipment and its outstanding performance, has turned this acquisition into an absolute win that far exceeded my expectations!
V
Valentino
I recently purchased the 27KW Rheem Electric Tankless Water Heater, and I couldn’t be more thrilled with the fantastic price, unmatched performance, and the consistent hot water it delivers, making it a game-changer for my home comfort—definitely a smart purchase that exceeded my expectations.
M
Melvin
This 27KW Rheem Electric Tankless Water Heater is an absolute powerhouse! The price for such a high-capacity and energy-efficient water heater is remarkably reasonable, and its ability to deliver consistent and instant hot water amazed me. For anyone seeking a reliable and robust water heating solution without compromising on efficiency, this heater is an incredible investment!
