HEAT-FLO SSL-40D
0.92 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 426 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, medium draw pattern (a typical three- or four-person household, about 55 gallons on a busy morning).
If you are checking the HEAT-FLO SSL-40D, this electric tank water heater uses 3,531 kWh of electricity a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. That is 0 kWh from the 3,531 kWh median of the 426 electric tank models tested at the same draw pattern.
Energy use per year
3,531 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 3,531 kWh for the 426 models registered in the same heater type and draw pattern; it ranks 213 of 426, lowest energy first.
Solid line: this model (3,531 kWh). Dashed line: the class median.
Min 773 kWh Median 3,531 kWh Max 3,569 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 medium draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Medium 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
- 60 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 44 gal DOE CCD · 2026-09-19
What it costs to install
$1,707–$2,003 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 40-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 3,531 kWh figure was computed by this site, not by the registry. It combines the model's UEF, the ratio of hot water delivered to energy used, with the daily hot-water draw that the DOE test sets for the medium draw pattern. For the SSL-40D, the UEF is 0.92, taken from the DOE Compliance Certification Database and retrieved 2026-09-19. The figure describes energy use at the federal test's draw, not at your household's own draw. A household that draws more hot water than the test would use more energy. One that draws less would use less. The size of that difference is not available, because the registry gives no figure outside the test draw. The steps behind the figure are set out in how the annual cost is calculated.
The SSL-40D ranks 213th lowest in energy use among the 426 electric tank models registered at the medium draw pattern. That puts it in the second-lowest quarter of its class for energy use, and its 3,531 kWh equals the class median of 3,531 kWh. The registry lists a rated volume of 44 gallons. It also lists a first hour rating of 60 gallons, meaning the gallons of hot water available in the first hour from a full tank. Together with the medium draw pattern, these two figures describe the use the unit was tested for. A household whose busiest hour needs more than 60 gallons is outside that test. For a different fuel or size, the selector by fuel, space and size filters the registry. To stay in this class, find a same-class replacement by model number.
The running cost does not appear in this text. It depends on your own utility's electricity tariff, and the page does not know that rate until you enter a ZIP. The calculator then works out the cost from 3,531 kWh at your rate. That result applies only at the medium draw pattern. The SSL-40D sits 0 kWh from the 3,531 kWh class median. So at any single rate, its running cost matches that of a median model in this class. The installed-cost range in its own block is a modeled range with its source and date shown. It is not a quote. To check another address, use the cost calculator on your own ZIP.
DOE CCD · 2026-09-19