EEMAX AM004277T
0.94 UEF DOE CCD · 2026-09-19Grade F: 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 EEMAX AM004277T, an electric tankless unit, it uses 628 kWh of electricity a year at the very small draw pattern, the standard daily hot-water usage DOE tests against. That is 13 kWh above the class median of 615 kWh across 271 models registered in the same class.
Energy use per year
628 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 above the median of 615 kWh for the 271 models registered in the same heater type and draw pattern; it ranks 188 of 271, lowest energy first.
Solid line: this model (628 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
- 0.94 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
$1,300–$1,790 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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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 EEMAX model on file
What this brand files, by heater type.
UEF 0.94 · Grade F Price it on your ZIP
The figure of 628 kWh was computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.94 with the DOE test's daily hot-water draw for this draw pattern. The source is DOE CCD, retrieved 2026-09-19. The figure applies only to the very small draw pattern; a figure for any other daily use is not available here. Against the class median of 615 kWh, the unit sits 13 kWh above, and its rank is 188th lowest energy use of 271. That places it above the middle of its class for energy use, though not among the highest-use models. The method is set out in how the annual cost is calculated.
This model is registered in a class for small units, such as a single bathroom or a point-of-use heater under a sink. Its maximum flow rate in gallons per minute is 0.4. The 628 kWh figure belongs to that very small draw pattern only, so it does not describe use in a larger household. The registry data used here does not give the flow this unit delivers at a particular temperature rise, so that value is not available. A reader whose hot-water load is larger can filter by fuel, space and size with the water heater selector, or look for a same-class unit by model number with the replacement finder. Both start from a different load than the one behind 628 kWh.
The running cost is not stated in this text because it depends on your own utility electricity tariff. It is your rate per kWh applied to 628 kWh, and the cost calculator does that arithmetic from your ZIP. The gap of 13 kWh from the class median of 615 kWh is a difference in energy, and what it costs also depends on that same rate. The figure is a calculation from the registry UEF of 0.94 at the federal test's daily draw. It is not a measurement of use in any particular home, and real use in a home is unknown. The modeled installed-cost range appears in its own block on this page, with its source and date.
DOE CCD · 2026-09-19