What it delivers
The SIVUATEK TSB-270 27 kW Electric Tankless Water Heater is a whole-house electric tankless rated at 27 kW on 240 volts.
At a 45°F rise (mild inlet water to a 120°F set point) it holds about 4.1 GPM, 2 showers at 2 GPM; in winter, at a 70°F rise, about 2.6 GPM, 1 shower at 2 GPM. Check your house in the planner.
At 240 volts 27 kW is about 112 amps. The maker calls for 3 x 40-amp circuit breaker. A licensed electrician confirms the panel, the service and the wire before it goes in.
Electric tankless units need no venting and no gas, and work best where inlet water stays mild, because every degree of rise costs flow.
From the listing: connections: 3/4" npt; material: Aluminum, Brass, Metal; model: TSB-270.
The listing gives dimensions of 12.2 in (W) x 17.26 in (H).
Right unit for this house?
Install it when
- 2 showers at once 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
- 27 kW
- No venting or gas line
- Breakers stated by the maker
Trade-offs
- Draws about 112 A
- Flow drops with cold inlet water
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 | TSB-270 | Retailer |
|---|---|---|
| Dimensions (seller) | 12.2"W x 17.26"H | Retailer |
| Features (seller) | Easy control, Intuitive display, Overheat Protection, Standard pipe fittings, Touch sensor | Retailer |
| Power | 27 kW | Retailer |
| Voltage | 240 V | Retailer |
| Material | Aluminum, Brass, Metal | Retailer |
| Breakers (maker) | 3 x 40-amp circuit breaker | Retailer |
| Connections | 3/4" npt | Retailer |
Rival units at this flow
More electric tankless water heaters rated for similar demand
- ThermoMate ET180 18 kW Electric Tankless Water Heater
- WINTEMP WN27 Electric Tankless Water Heater
- ThermoMate EH180 18 kW Electric Tankless Water Heater
- FOGATTI ET24 Electric Tankless Water Heater
Full electric tankless water heaters spec grid · Every SIVUATEK unit in the catalog
Final verdict
A solid whole-house electric tankless for 2 showers at once in mild climates.
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