HEAT-FLO SSL-40D
HEAT-FLO SSL-40D is in the DOE listing as of Oct 26, 2026.
It has a certified storage volume of 44 gallons, a certified UEF of 0.92, and a certified first-hour rating of 60 gallons of hot water.
- Electric storage water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Certified figures
- Storage volume
- 44gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 60gallonsHot water in the first hour
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Change your hourCertified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| SSL-40D | 44 | 0.92 | 60 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
Starting full, it gives 60 gallons of hot water in its first hour of use. Its tank holds 44 gallons, so reheating adds 16 gallons during the first hour. Of 477 electric storage models, 145 give more hot water in the first hour. Among electric storage models, the median first-hour rating is 55 gallons.
In tests, 92% of the energy it uses ends up as hot water (UEF 0.92). In the test, daily hot water use was set to medium (its draw pattern). Its UEF is lower than that of 81 of the 297 electric storage models with its draw pattern. On its draw pattern, its UEF is also the median electric storage UEF. Of the energy spent to reheat water, 98% goes into it (its recovery efficiency).
Not covered
- Advertised figures. We have none on file for this model.