EEMAX SPEX48T
0.97 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 this unit, the EEMAX SPEX48T uses 609 kWh a year at the very small draw pattern, the standard daily hot-water usage DOE tests against. That is 6 kWh below the class median of 615 kWh, ranking 37th lowest of 271 models.
Energy use per year
609 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 37 of 271, lowest energy first.
Solid line: this model (609 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
- 0.97 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
$1,309–$1,862 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 EEMAX model on file
What this brand files, by heater type.
UEF 0.97 · Grade E Price it on your ZIP
The figure of 609 kWh is computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, which is 0.97 for this model, with the DOE test's daily hot-water draw for the very small draw pattern. The fuel is electricity. The source is the DOE CCD, retrieved 2026-09-19. The figure holds only at that test draw. A household that draws more or less hot water will use a different amount, and this page does not estimate it. The method used for the annual figure is documented separately.
The comparison group is the 271 models registered as an electric tankless unit at the very small draw pattern. This model sits 6 kWh below the class median of 615 kWh. Its rank of 37th lowest puts it in the lowest quarter of its class for energy use. The 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 0.4 for this model. A household with larger hot-water demand falls outside the pattern this figure describes, and the registry data used here does not cover that case.
The running cost is not stated here because it depends on your own utility electricity tariff. Multiplying 609 kWh by your rate gives the yearly cost at the test draw. The cost calculator on your own ZIP does this for you. To look up a unit of the same class, use find a same-class replacement by model number with SPEX48T. If you need a different fuel, space or size, the selector by fuel, space and size covers those. The installed price range appears in its own block on this page with its source and date. It is a modeled range, not a quote.
DOE CCD · 2026-09-19