What it delivers
The Stiebel Eltron DHX 12-2 Plus 12 kW Electric Tankless Water Heater is a compact electric tankless rated at 12 kW on 240 volts.
Flow depends on how cold the incoming water is. Our estimate from its input: 1.8 GPM at a 45°F rise, falling to 1.2 GPM at 70°F, which is less than one 2 GPM shower on a cold-climate winter day. Try your own inlet temperature.
At 240 volts 12 kW is about 50 amps. The requirement calculator shows it at 208 V too; an electrician confirms the panel.
Electric tankless units need no venting and no gas, and work best where inlet water stays mild, because every degree of rise costs flow.
Also on the listing: features: Exclusive Motor Control Valve; material: lead free; model: DHX 12-2 Plus; warranty: 7 year manufacturer.
The listing gives dimensions of 8 in (W) x 14.13 in (H) and a weight of 5.5 lb.
Warranty, per the listing: 7 year manufacturer.
Right unit for this house?
Install it when
- Light use in mild climates
- Homes with no gas service
Look at another unit when
- Panels without spare capacity
- More than 1 shower at once in cold winters
Strengths and trade-offs
Strengths
- 12 kW
- No venting or gas line
Trade-offs
- Flow drops with cold inlet water
- Breaker needs not stated
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | DHX 12-2 Plus | Retailer |
|---|---|---|
| Dimensions (seller) | 8"W x 14.13"H | Retailer |
| Features (seller) | Exclusive Motor Control Valve | Retailer |
| Power | 12 kW | Retailer |
| Voltage | 240 V | Retailer |
| Product weight | 5.5 lb | Retailer |
| Material | lead free | Retailer |
| Warranty | 7 year manufacturer | Retailer |
Rival units at this flow
More electric tankless water heaters rated for similar demand
- Stiebel Eltron DHX 15-2 Plus 14.4 kW Electric Tankless Water Heater
- Stiebel Eltron Tempra 12 Trend 12 kW Electric Tankless Water Heater
- Stiebel Eltron Tempra 15 Trend 14.4 kW Electric Tankless Water Heater
- Stiebel Eltron 202145 9.6 kW Electric Tankless Water Heater
Full electric tankless water heaters spec grid · Every Stiebel Eltron unit in the catalog
Final verdict
A practical compact electric tankless for light use in mild climates.
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