HEAT-FLO SSL-30D
0.92 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 163 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, low draw pattern (a one- or two-person household).
If you are checking the HEAT-FLO SSL-30D, an electric tank water heater, it uses 2,439 kWh of electricity a year at the low draw pattern, the standard daily hot-water usage DOE tests against, which stands for a one- or two-person household. That equals its class median of 2,439 kWh, a difference of 0 kWh.
Energy use per year
2,439 kWh a year
Computed by this site from the registry's UEF and the federal test's daily hot-water draw for this draw pattern. What it costs depends on the electricity rate where you live.
That is equal to the median of 2,439 kWh for the 163 models registered in the same heater type and draw pattern; it ranks 19 of 163, lowest energy first.
Solid line: this model (2,439 kWh). Dashed line: the class median.
Min 724 kWh Median 2,439 kWh Max 2,550 kWh
What it costs to run where you live
What the registry files
- UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
- 0.92 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tank at the low draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Low DOE CCD · 2026-09-19
- First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
- 48 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 28 gal DOE CCD · 2026-09-19
What it costs to install
$1,475–$1,602 installed
Not a quote — a modeled range of what installers have charged for this class of unit; your price will vary with labor rates, access, and local code requirements.
Escalation indexes: equipment (BLS PPI) latest available: August 2026; labor (BLS ECI) latest available: April 2026 to June 2026.
NLR REMDB (BLS PPI/ECI escalated) · 2026-04-01Safety record
No CPSC recall names this model.
Checked against the CPSC recall database. CPSC does not publish a model-level match for this product category, so this list is curated by hand from the manufacturer's recall filings.
CPSC · 2026-09-24What these figures mean
How this compares
The closest models in the same class — same fuel, type and draw pattern.
Keep going
How every figure on this page is calculated
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Find what replaces your water heater
Enter the model number off your old unit and see what is on file today, with the yearly cost difference.
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Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
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What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
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Is a 30-gallon water heater enough?
Answered from what models in this size actually file.
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Water heaters
Every model on file with the Department of Energy, by heater type.
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All electric resistance tank water heaters
Electric tanks that file a UEF below 2.0 — heated by elements, not a heat pump.
UEF 0.92 · Grade G Price it on your ZIP
The figure of 2,439 kWh is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.92 for this model, and the DOE test's daily hot-water draw for the low draw pattern. The source is DOE CCD, retrieved 2026-09-19. The comparison group is the 163 models registered as an electric tank at the low draw pattern. Their median is 2,439 kWh, so this model sits 0 kWh from it. Its rank is 19th lowest energy use of 163, in the lowest quarter of its class. The steps are described under how the annual cost is calculated.
The 2,439 kWh applies to a one- or two-person household, because that is what the low draw pattern represents. It does not describe a larger household, and this page has no figure for other draw patterns. The rated volume is 28 gallons and the first hour rating, the gallons of hot water available in the first hour from a full tank, is 48 gallons. The data on this page does not say whether those values cover a particular household's busiest hour. To compare other fuels, spaces or sizes against this model's 2,439 kWh, use the selector by fuel, space and size.
The running cost is not stated here, because it depends on your own utility electricity rate. The annual cost at the federal test's draw is the 2,439 kWh multiplied by that rate. The cost calculator on your own ZIP applies your local tariff to this figure. Actual use above or below the test's daily draw will move the result away from the 2,439 kWh. The installed price range appears in its own block with its source and date, and it is not repeated in this text. If you are checking a swap, find a same-class replacement by model number and compare its energy use with this model's 2,439 kWh class median.
DOE CCD · 2026-09-19