Rheem AM005240T
0.96 UEF DOE CCD · 2026-09-19Grade E: 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 Rheem AM005240T, it uses 615 kWh of electricity a year at the very small draw pattern, the standard daily hot-water usage DOE tests against. That equals its class median of 615 kWh, a difference of 0 kWh, across 271 electric tankless models.
Energy use per year
615 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 615 kWh for the 271 models registered in the same heater type and draw pattern; it ranks 77 of 271, lowest energy first.
Solid line: this model (615 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
- 0.96 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
- 0.5 gal/min DOE CCD · 2026-09-19
What it costs to install
$1,306–$1,838 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 Rheem model on file
What this brand files, by heater type.
UEF 0.96 · Grade E Price it on your ZIP
The figure of 615 kWh is computed by this site, not published by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, listed as 0.96 for this model, with the DOE test's daily hot-water draw for the very small draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The value holds only under that test draw, so a household that draws more or less hot water will use a different amount. Against 271 comparable models, this unit ranks 77th lowest in energy use, in the second-lowest quarter of its class. The method is set out under how the annual cost is calculated.
Its difference from the class median is 0 kWh, so on energy use alone it sits at the typical level for the 271 models registered at this draw pattern, neither above nor below the median of 615 kWh. This draw pattern describes small units, meaning a single bathroom or a point-of-use heater under a sink. The registry lists a maximum flow rate in gallons per minute of 0.5 for this model. That fits the small loads the test represents. It says nothing about larger loads, because the data here contains no result for a whole-house draw. A reader with a different load can use the selector by fuel, space and size or find a same-class replacement by model number.
The running cost is not stated in this text because it depends on the electricity tariff at the reader's own address. The annual energy of 615 kWh is the quantity a rate is applied to, so the same unit costs different amounts in different places. The cost calculator that uses your own ZIP applies a local rate to that figure. The modeled installed-cost range appears in its own block on the page, with its source and date, and its figures are not repeated here. That range is modeled, not a quote. The energy figure reflects the registry as retrieved on 2026-09-19; later registry changes are not reflected.
DOE CCD · 2026-09-19