Best Rheem Electric Water Heaters Updated May 2025
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Best Rheem Electric Water Heaters
2025 Buyer's GuideUpdated May 2025
Advertiser disclosure About our rankings
Sort by:
Best Overall
Best Value

9.8

1

9.8

Rheem 6.5kW 240V Point of Use Thermostatic Tankless Electric Water Heater
Functionality
Ease of installation
Best Overall
Best Value

9.8

1
Rheem 6.5kW 240V Point of Use Thermostatic Tankless Electric Water Heater
Functionality
Ease of installation

9.7

2

9.7

Rheem 11kW 240V Tankless Electric Water Heater
Heat level
Functionality
Ease of installation
Size
Longevity
Energy efficiency
Save 9%
Save 9%

9.7

2
Rheem 11kW 240V Tankless Electric Water Heater
Heat level
Functionality
Ease of installation
Size
Longevity
Energy efficiency
Save 9%

9.5

3

9.5

Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
Works well
Ease of installation
Value for money
Space saving
Shower capacity

9.5

3
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
Works well
Ease of installation
Value for money
Space saving
Shower capacity

9.1

4

9.1

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
Ease of installation
Water supply
Value for money
Size
Quality

9.1

4
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
Ease of installation
Water supply
Value for money
Size
Quality
Popular

8.9

5

8.9

Rheem 18kW 240V Tankless Electric Water Heater, Gray
Ease of installation
Value for money
Space saving
Build quality
Popular

8.9

5
Rheem 18kW 240V Tankless Electric Water Heater, Gray
Ease of installation
Value for money
Space saving
Build quality

8.7

6

8.7

Rheem 8kW 240V Tankless Electric Water Heater
Size
Ease of installation
Water flow
Looks nice

8.7

6
Rheem 8kW 240V Tankless Electric Water Heater
Size
Ease of installation
Water flow
Looks nice

8.6

7

8.6

Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater
Ease of installation
Save 11%
Save 11%

8.6

7
Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater
Ease of installation
Save 11%

8.5

8

8.5

Rheem RRTGH84DVLN3701171 Rheem RTGH Series 8.4 GPM 157,000 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater St...
Functionality
Water temperature
Ease of installation
Design
Space saving
Value for money

8.5

8
Rheem RRTGH84DVLN3701171 Rheem RTGH Series 8.4 GPM 157,000 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater St...
Functionality
Water temperature
Ease of installation
Design
Space saving
Value for money

8.4

9

8.4

Rheem 3.5kW 120V Point of Use Thermostatic Tankless Electric Water Heater

8.4

9
Rheem 3.5kW 120V Point of Use Thermostatic Tankless Electric Water Heater

Our Top Choice

Best Overall
Best Value

9.8

1

9.8

Rheem 6.5kW 240V Point of Use Thermostatic Tankless Electric Water Heater
Functionality
Ease of installation
Best Overall
Best Value

9.8

1
Rheem 6.5kW 240V Point of Use Thermostatic Tankless Electric Water Heater
Functionality
Ease of installation
Related Categories
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Related Categories
Rheem Hot Water HeaterRheem Water HeaterRheem Tankless Water HeaterRheem Hybrid Water HeaterElectric Tankless Water HeaterTankless Water Heater (All)
Related Categories
Rheem Hot Water HeaterRheem Water HeaterRheem Tankless Water HeaterRheem Hybrid Water HeaterElectric Tankless Water HeaterTankless Water Heater (All)