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Quick specs
Power
8 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 8 kW Tankless Electric Water Heater 240 Volts RTEX-08
Endless Hot Water·8 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 8 kW Tankless Electric Water Heater 240 Volts RTEX-08
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
8 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 8 kW Tankless Electric Water Heater 240 Volts RTEX-08
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: 14
Width: 10.3
Key features
- Endless Hot Water — on-demand for point-of-use or multiple applications
- 8 kW, 240 Volts — Rheem Professional Classic tankless electric heater
- Digital Temperature Control — precise adjustments
- Compact and Stylish — space-saving 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.
Dimensions
Height 6.75 in.
Width 10.3 in.
Length 14 in.
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
5 verified reviews
TG
Tucker G
The 8KW Rheem Electric Tankless Water Heater is a game-changer, delivering reliable, endless hot water at an outstanding price! It heats water efficiently and quickly, making it perfect for smaller spaces while saving on energy costs without compromising on performance.
RD
Robert D
I recently purchased the 8KW Rheem Electric Tankless Water Heater and was pleasantly surprised by its exceptional performance and incredible affordability. Despite its compact size, this unit delivers a consistent flow of hot water, proving to be an invaluable addition to my home that exceeds expectations without breaking the bank!
SL
Soren L
I recently purchased the 8KW Rheem Electric Tankless Water Heater, and to my sheer delight, the unbeatable price, coupled with the exceptional quality of the equipment and its stellar performance, has made this product an absolute steal that far exceeded my expectations!
S
Shane
I recently purchased the 8KW Rheem Electric Tankless Water Heater, and it’s an absolute gem with its unbeatable price, efficient performance, and the instant hot water it provides, transforming my daily routines—undoubtedly a superb investment that left me pleasantly surprised.
M
Mary
This 8KW Rheem Electric Tankless Water Heater is an absolute game-changer for home comfort! The price for such a powerful and energy-efficient water heater is surprisingly affordable, and its consistent and instant hot water delivery left me thoroughly impressed. For anyone seeking an efficient and reliable water heating solution without compromising space or energy, this heater is a remarkable choice!
