Price range
€358
– €473
Rheem RTEX-24 Tankless Electric Water Heater
A tankless electric water heater providing continuous hot water on demand with energy-efficient operation. Features wall mounting, self-modulating power control, and digital temperature display for precise adjustment.
- 2 variants
- Self-modulating power control
- Wattage: 2 variants
Price spread
~32%
Across new variants
Customer rating
899 ratings
Available variants (2)
Choose a variant, then open its detail page for seller-specific information.
18kW, 4.4 GPM
Amazon
Available to order
- Wattage
- 18000 watts
- efficiency
- 99.8%
- Heat Output
- 18 Kilowatts
24kW, 5.9 GPM
Amazon
Available to order
- Wattage
- 24 KW
- efficiency
- 99.8% Energy efficient
- Heat Output
- 24 Kilowatts
Variant comparison
Compare prices, availability, and key variant differences in one table.
| Feature | 18kW, 4.4 GPM | 24kW, 5.9 GPM |
|---|---|---|
| Price | €357.54 | €472.67 |
| Updated | Aug 24, 2026 | Aug 20, 2026 |
| Availability | Available to order | Available to order |
| Wattage | 18000 watts | 24 KW |
| efficiency | 99.8% | 99.8% Energy efficient |
| Heat Output | 18 Kilowatts | 24 Kilowatts |
| Item Weight | 14.78 pounds | 17.8 pounds |
| Maximum Flow Rate | 4.4 Gallons Per Minute | 5.9 Gallons Per Minute |
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Overview
Compare Rheem RTEX-24 Tankless Electric Water Heater variants, pricing tiers and key differences.
Learn moreHow variants differ
- Wattage
- efficiency
- Heat Output
Who each variant is for
- Start with your budget: the visible price spread across variants is about 32%.
Reviews
4.3 / 5
from 899 ratings
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Product confidence
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