Can this directly replace a 40 gal tank heater with a 30A double pole breaker? What are power requrements?

No it can't. RTEX-24 requires 3 sets of wire and ground, and it needs 3x 40amp breaker. That's a total of 120amps

Why are 2 answers for the breaker requirements. Is it 3 double 40 or 3 double 60 amp

If the unit draws 40 amp. you need a 2 pole 40 amp breaker 2 #8 wires good for 40 amp and 1 # 10 wire for a bond. Now if the unit draws 60 amps you need 2 # 6's good for 65 amps. A 2 pole 60 amp breaker and 1 # 8 for a bond( ground wire).

Has anyone had a noticable difference in electric bill?

Yes, reduced electricity by about 20%. But this thing sucks. It has trouble keeping up with water flow and is noisy. Their support is atrocious. I would not recommend it. Select a different brand.

Can the unit operate as a rtex-18 if i only hook up 2 of the elements? because i only need the 18 specs as of now but would like the option to upgrade

Actually you can do this but you must be careful on which circuits are connected. Rheem says the elements are activated from right to left as power is required. The right most element connection also provides power to the control so this must always be connected. If the very left element is left disconnected, you will only get 2/3 of the rated power on a 3 element unit.

Desertcart Logo

Deliver to Malaysia

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔥 Hot Water, No Waiting!

DURABLE BUILD - Stainless steel finish ensures longevity and reliability.
COMPACT DESIGN - Space-saving wall mount design fits seamlessly into any home.
ENERGY EFFICIENT - Save on energy bills with a remarkable 99.8% efficiency rating.
INSTANT HOT WATER - Experience endless hot water on demand, perfect for busy lifestyles.
SMART TEMPERATURE CONTROL - Adjustable digital display for precise temperature settings.

The Rheem RTEX-24 is a powerful 24kW electric tankless water heater designed for efficiency and convenience. With a maximum flow rate of 5.9 GPM, it delivers consistent hot water on demand, making it ideal for modern households. Its sleek, compact design and advanced LED display ensure easy operation and installation, while its impressive 99.8% energy efficiency helps you save on utility costs.

Specifications

Brand	Rheem
Product Dimensions	17.63"W x 18.25"H
Special Feature	LED Display
Color	Gray
Wattage	24 KW
Voltage	240 Volts
Maximum Flow Rate	5.9 Gallons Per Minute
Heat Output	24 Kilowatts
Efficiency	99.8% Energy efficient
Style	Water Heater
Maximum Operating Pressure	150
Maximum Pressure	150 Pound per Square Inch
Mounting Type	Wall
Is Electric	Yes
Manufacturer	Rheem
Item Depth	3.5 inches
UPC	020352685397
Global Trade Identification Number	00020352685397
Part Number	RTEX-24
Item Weight	17.8 pounds
Item model number	RTEX-24
Is Discontinued By Manufacturer	No
Finish	Stainless Steel
Shape	Rectangle
Installation Method	Wall Mount
Item Package Quantity	1
Special Features	LED Display
Usage	Inside; Professional
Included Components	Fittings, Aerators
Batteries Included?	No
Batteries Required?	No