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Quick specs
Power
24 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 24 kW Tankless Electric Water Heater 240 Volts RTEX-24
Endless Hot Water·24 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 24 kW Tankless Electric Water Heater 240 Volts RTEX-24
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
24 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 24 kW Tankless Electric Water Heater 240 Volts RTEX-24
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: 14.78
Width: 16.75
Key features
- Endless Hot Water — on-demand for point-of-use or multiple applications
- 24 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.
Dimensions
Height 6.75 in.
Width 16.75 in.
Length 14.78 in.
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
5 verified reviews
GG
Grayson G
The 24KW Rheem Electric Tankless Water Heater is an absolute game-changer—delivering powerful, consistent hot water at a fantastic price! Its impressive efficiency and performance have made it the perfect addition to my home, ensuring endless hot water whenever I need it.
FH
Frederick H
I recently purchased the 24KW Rheem Electric Tankless Water Heater and was pleasantly surprised by its exceptional performance and incredible value. The sleek, efficient design delivers a constant flow of hot water, all at a price that’s hard to beat, making it a must-have for any home!
RG
Reece G
I recently purchased the 24KW Rheem Electric Tankless Water Heater, and the electrifying combination of its unbeatable price, coupled with the exceptional quality of the equipment and its outstanding performance, has turned this acquisition into an absolute game-changer that far exceeded my expectations!
K
Kaison
I recently purchased the 24KW Rheem Electric Tankless Water Heater, and I’m ecstatic about the unbeatable price, powerful performance, and endless hot water supply that have transformed my daily routines into a seamless and refreshing experience—truly a remarkable investment for any home.
M
Mario
This 24KW Rheem Electric Tankless Water Heater is a total game-changer for home comfort! The price for such a high-capacity and energy-efficient water heater is surprisingly reasonable, and its consistent delivery of instant hot water left me thoroughly impressed. For anyone seeking a reliable and powerful water heating solution without breaking the bank, this heater is an absolute winner!
