Stiebel Eltron DHC-E 3.5-1 Trend
0.99 UEF DOE CCD · 2026-09-19Grade C: where this UEF sits among the 271 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tankless unit, very small draw pattern (small units - a single bathroom, or a point-of-use heater under a sink).
If you are checking the Stiebel Eltron DHC-E 3.5-1 Trend, it uses 597 kWh of electricity a year. That figure applies to the very small draw pattern, the standard daily hot-water usage DOE tests against. It sits 18 kWh below the class median of 615 kWh, ranking 3rd lowest in energy use of 271 models.
Energy use per year
597 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 below the median of 615 kWh for the 271 models registered in the same heater type and draw pattern; it ranks 3 of 271, lowest energy first.
Solid line: this model (597 kWh). Dashed line: the class median.
Min 562 kWh Median 615 kWh Max 649 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
- 0.99 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tankless unit at the very small draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Very small DOE CCD · 2026-09-19
- Maximum Gallons Per Minute how many gallons a minute it can heat while running continuously
- 0.4 gal/min DOE CCD · 2026-09-19
What it costs to install
$1,314–$1,910 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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How to size a tankless water heater by GPM
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 tankless water heaters
Electric instantaneous units, sized by flow rate rather than tank gallons.
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Every Stiebel Eltron model on file
What this brand files, by heater type.
UEF 0.99 · Grade C Price it on your ZIP
The 597 kWh figure comes from this site's calculation, not from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for this draw pattern. For this unit the UEF is 0.99. It comes from the DOE Compliance Certification Database, retrieved 2026-09-19. The class holds the 271 models registered as an electric tankless unit at the very small draw pattern. Within that class, the 18 kWh gap below the median puts the unit 3rd from the lowest. The figure holds only at the federal test's daily draw. This page has no energy figure for other usage levels. The steps behind the figure are set out in how the annual energy and cost figures are calculated.
The very small draw pattern covers small units: a bathroom, or a point-of-use heater under a sink. This unit's registered maximum flow rate in gallons per minute is 0.4. That rating and the draw pattern together define the use the test covers. A home whose hot-water use goes beyond a sink or a bathroom falls outside this draw pattern. This page has no energy figure for that use. A unit tested at a larger draw pattern belongs to a different class, so the 615 kWh median does not apply to it. To match a heater by fuel, space and size, use the water heater selector by fuel, space and size. To check units in the same class as an existing model number, use the same-class replacement search by model number.
Running cost is not stated in this text. It depends on your own utility's electricity tariff, so the page computes it from your ZIP instead of estimating it. That calculation starts from the 597 kWh a year at the test draw and applies your local rate. At the same rate, this unit costs less to run than a median unit in its class. The difference comes from the 18 kWh gap in annual energy use. The installed price range appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote. To rerun the figure for a different address, use the running cost calculator for your own ZIP. This page cannot tell what the unit uses at draws other than the test draw.
DOE CCD · 2026-09-19