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Rheem RTEX-24 240V 3 Heating Chambers Residential Tankless Water Heater

Rheem RTEX-24 240V 3 Heating Chambers Residential Tankless Water Heater

Q: 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

Q: 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).

Q: 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.

Q: 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.

4.2/5

Product ID: 452099193

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Details

Wattage
24 KW
Voltage
240 Volts
Maximum Flow Rate
5.9 Gallons
Heat Output
24 Kilowatts
Is Electric
Yes

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Description

Rheem RTEX-24 240V 3 Heating Chambers Residential Tankless Water Heater

Specifications

Wattage	24 KW
Voltage	240 Volts
Maximum Flow Rate	5.9 Gallons Per Minute
Heat Output	24 Kilowatts
Is Electric	Yes
Manufacturer	Rheem
UPC	020352685397
Global Trade Identification Number	00020352685397
Item model number	RTEX-24
Product Dimensions	46.36 x 36.83 x 8.89 cm; 8.07 kg
ASIN	B01MS9DVEE

Have a Question? See What Others Asked

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

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

Has anyone had a noticable difference in electric bill?

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

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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R48550

Duties & taxes incl.

South Africastore

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30 daysfor PRO membership users

15 dayswithout membership

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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