Radiant water heaters
2 basic models.
Certified figures by basic model
| Basic model | Type | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Model numbers |
|---|---|---|---|---|---|
| SFK 55 | Gas tankless | 0.95 | 5.5 | 98% | SFK 55 |
| SFK 56 | Gas tankless | 0.95 | 5.5 | 98% | SFK 56 |
A range means the models under one basic model differ. A dash means the model has no such figure.
Hot water out per unit of energy in, called UEF, reaches 0.95 among Radiant models. With 0.95, not all the energy used ended up in the water. The SFK 55 is one of 2 basic models with that UEF. This brand has an ENERGY STAR certified model number in each of its basic models.
This brand's whole range is one type: gas tankless. Its highest flow without a tank comes from 2 basic models. In the test, that flow warms by 67°F at 5.5 gallons per minute.
On this site, only this brand lists these basic model numbers.