ELIOS EROD150N0000
0.95 UEF DOE CCD · 2026-09-19Grade B: where this UEF sits among the 397 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
A gas tankless unit, high draw pattern (a larger household, or one where showers and laundry overlap).
Checking this unit for a larger household? The ELIOS EROD150N0000 uses 178 therms of natural gas a year at the high draw pattern, the standard daily hot-water usage DOE tests against. That is 4 therms below the class median of 182 therms. It ranks 45th lowest of 397 models.
Energy use per year
178 therms 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 natural gas rate where you live.
That is below the median of 182 therms for the 397 models registered in the same heater type and draw pattern; it ranks 45 of 397, lowest energy first.
Solid line: this model (178 therms). Dashed line: the class median.
Min 173 therms Median 182 therms Max 209 therms
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
- 0.95 DOE CCD · 2026-09-19 Compared only with other models registered as a gas tankless unit at the high draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- High DOE CCD · 2026-09-19
- Maximum Gallons Per Minute how many gallons a minute it can heat while running continuously
- 4.2 gal/min DOE CCD · 2026-09-19
- On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
- 2026-01-28 ENERGY STAR · 2026-09-19
- Connected / demand response (ENERGY STAR) whether the unit can take signals from your utility to shift when it heats, and by which standard (such as CTA-2045)
- Yes ENERGY STAR · 2026-09-19
What it costs to install
$2,358–$3,405 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 · 2026-09-24Does it fit your space?
Enter your own numbers below — this compares them to what ENERGY STAR publishes for this model, it does not tell you what to buy.
- Dimensions (ENERGY STAR)
- the unit's filed height, width, depth or tank diameter, in inches
- Input voltage and maximum current (ENERGY STAR)
- the circuit voltage the unit is certified on and the most current it draws
- Vent type and size (ENERGY STAR)
- how a gas unit is vented, the vent's diameter and the height of its vent connector
What 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 gas tankless water heaters
Gas-fired instantaneous units, sized by flow rate rather than tank gallons.
UEF 0.95 · Grade B Price it on your ZIP
The figure of 178 therms is this site's calculation, not a registry value. It starts from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.95 for this model. The site combines that with the daily hot-water draw DOE's test sets for the high draw pattern. That pattern describes a larger household, or one where showers and laundry overlap. The source is DOE CCD, retrieved 2026-09-19, and the fuel is natural gas. The steps are described under how the annual cost is calculated. A home whose daily draw differs from the test's will use a different amount of gas.
Among the 397 models registered as a gas tankless unit at the high draw pattern, this one ranks 45th lowest for energy use. Its 178 therms sits 4 therms below the class median of 182 therms. That places it in the lowest quarter of its class. The class median is the reference point here, and the gap to it is 4 therms out of 182 therms. The unit also lists a maximum flow rate in gallons per minute of 4.2. That is a capacity figure, and it is separate from the energy figure. Flow at other conditions is not available here.
The 178 therms figure fits a household whose hot-water use matches the high draw pattern. It does not describe lighter use, and no figure for another draw pattern is available here. Running cost is not stated in the text. It depends on your state's average residential gas price, and the page computes it from your ZIP. Use the cost calculator on your own ZIP to apply 178 therms to your rate. To compare other options, the water heater selector filters by fuel, space and size. You can also find a same-class replacement by model number, starting from EROD150N0000.
DOE CCD · 2026-09-19