Rheem RTEX-24 Electric Tankless Water Heater: ON/OFF Dial Control with adjustable digital temperature display
Meet the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater—your new best friend for never-ending hot water. Whether you're tackling a single sink or juggling multiple showers (because who doesn't love a good water fight?), this bad boy delivers a steady 5.9 GPM. And guess what? It's up to 93% smaller than those clunky old electric water heaters, saving you space and, let's be honest, probably a few arguments about closet space.
But wait, there's more (and no, we're not selling knives on TV). This heater is not just about saving space; it's about saving energy too—99.8% efficient, to be exact. Plus, with its sleek stainless steel finish and wall-mount design, it's like the James Bond of water heaters: sophisticated, efficient, and always ready for action. And with an LED display that keeps you in the loop, you'll always know what's up (or at least how hot your water is).
Features
- Self-modulating power control
- 24kW Model Flow Rate: up to 5.9 GPM
- Bottom 3/4" NPT water connections
- On demand, consistent and continuous hot water
- ON/OFF Dial Control with adjustable digital temperature display
General specs
- Brand: Rheem
- Model: RTEX-24
- Seller: Amazon
- ID: B01MS9DVEE
- 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
- item_depth: 3.5 inches
- item_weight: 17.8 pounds
- finish: Stainless Steel
- shape: Rectangle
- installation_method: Wall Mount
- usage: Inside; Professional
- included_components: Fittings, Aerators
- First listed by seller: 6/18/25
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Amazon
Shipping options
Video Reviews
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
|
Rheem RTEX-24
|
Rheem RTEX-13 External adjustable digital thermostatic control
|
Rheem RTG-95DVLN-3 Gray Continuous hot water for entire house
|
Rheem RTEX-18 Gray
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Rinnai V53DeP Endless hot water flow
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Rinnai RX199iN Silver
|
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| Brand | Rheem | Rheem | Rheem | Rheem | Rinnai | Rinnai |
| Model | RTEX-24 | RTEX-13 | RTG-95DVLN-3 | RTEX-18 | V53DeP | RX199iN |
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| Price | $464.99 | $287.20 | $1,259.05 | $415.00 | $741.65 | $1,532.79 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 6, 2025 | December 6, 2025 | December 6, 2025 | December 6, 2025 | December 6, 2025 | December 6, 2025 |
| product_dimensions | 17.63"W x 18.25"H | 1"W x 1"H | 13"W x 30"H | |||
| maximum_flow_rate | 5.9 Gallons Per Minute | 4.8 Gallons Per Minute | 5.3 Gallons Per Minute | |||
| heat_output | 24 Kilowatts | 13 Kilowatts | 81 Kilowatts | |||
| efficiency | 99.8% Energy efficient | at least 99.8% energy efficient | High | |||
| mounting_type | Wall | Wall | Wall | |||
| is_electric | Yes | Yes | No | |||
| item_depth | 3.5 inches | 0.5 inches | 7.9 in / (202 mm) | |||
| item_weight | 17.8 pounds | 3.96 pounds | 33 pounds | |||
| included_components | Fittings, Aerators | Rheem RTEX-13 Residential Tankless Water Heater | Water Heater | |||
| Maximum Flow Rate | 9.5 Gallons Per Minute | 4.4 Gallons Per Minute | 11 Gallons Per Minute | |||
| Maximum Temperature | 140 Degrees Fahrenheit | 140 Degrees Fahrenheit | 140 Degrees Fahrenheit | |||
| Efficiency | 0.82 | 99.8% | High (UEF .98) | |||
| Mounting Type | Wall | Wall | Wall | |||
| Item Weight | 46.5 pounds | 14.78 pounds | 55 pounds | |||