What it delivers
The Ranein RE13K 13 kW Electric Tankless Water Heater is a compact electric tankless rated at 13 kW on 240 volts. Its listing gives a maximum flow of 3.1 GPM.
At a 45°F rise (mild inlet water to a 120°F set point) it holds about 2.0 GPM, less than one 2 GPM shower; in winter, at a 70°F rise, about 1.3 GPM, less than one 2 GPM shower. Check your house in the planner.
At 240 volts 13 kW is about 54 amps. The maker calls for 1 × 60A circuit breaker. Whether your panel can carry it alongside heating and cooking loads is an electrician's call.
No flue, no gas line and a compact box on the wall; the trade-off is that a cold winter inlet cuts its flow sharply.
From the listing: features: Dry Combustion Protection, LED Display, Lightweight; connections: 1/2" npt; material: Metal; model: RE13K.
The listing gives dimensions of 10.7 in (W) x 7.9 in (H) and a weight of 3.8 kg.
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
- 13 kW
- Up to 3.1 GPM
- No venting or gas line
- Breakers stated by the maker
Trade-offs
- Weak at a large winter rise
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 | RE13K | Retailer |
|---|---|---|
| Dimensions (seller) | 10.7"W x 7.9"H | Retailer |
| Features (seller) | Dry Combustion Protection, LED Display, Lightweight | Retailer |
| Power | 13 kW | Retailer |
| Voltage | 240 V | Retailer |
| Max flow (maker) | 3.1 GPM | Retailer |
| Product weight | 3.8 kg | Retailer |
| Material | Metal | Retailer |
| Breakers (maker) | 1 × 60A circuit breaker | Retailer |
| Connections | 1/2" npt | Retailer |
Rival units at this flow
More electric tankless water heaters rated for similar demand
- LiberLive RE13K 13 kW Electric Tankless Water Heater
- WINTEMP YQ-WN11K 11 kW Electric Tankless Water Heater
- VEVOR JN13 13.8 kW Electric Tankless Water Heater
- WINTEMP WN11 Electric Tankless Water Heater
Full electric tankless water heaters spec grid · Every Ranein unit in the catalog
Final verdict
A solid compact electric tankless for light use in mild climates.
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