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Mid-Range
Tankless
Rheem RTEX-18 18kW Tankless Electric Water Heater
Model Number: RTEX-18
Compact electric tankless unit with 0.99 UEF, ideal for point-of-use or smaller homes.
0.99 UEF
4.4 GPM
Technical Specifications
0.99
UEF Rating
4.4
GPM Flow Rate
Heater Typetankless
Fuel Typeelectric
Installed Price$1,200 – $2,200
Parts Warranty5 years
Labor Warranty1 year
Key Features
Self-modulating power control
Digital thermostat display
Compact 3.5 x 15 x 9 inch design
Brass/copper heat exchanger
Pros & Cons
Pros
- 0.99 UEF — nearly perfect efficiency
- Compact wall-mount design
- Digital temperature control
- No standby energy loss
Cons
- Limited flow rate for cold climates
- Requires 2x 40-amp breakers
- Not ideal for whole-house in large homes
Best For
Small homes, apartments, or point-of-use applications
Warranty Snapshot
Parts: 5 years
Labor: 1 year
Register equipment with the manufacturer after installation to preserve coverage. We handle registration on Homets installs.
Frequently Asked Questions
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