Chronomite CM
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).
You are checking the Chronomite CM, an electric tankless unit. It uses 628 kWh 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, ranking 188th lowest in energy use of 271 models.
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
- 0.7 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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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.
UEF 0.94 · Grade F Price it on your ZIP
The figure of 628 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, of 0.94 with the DOE test's daily hot-water draw for the very small draw pattern. The source is DOE CCD, retrieved 2026-09-19. The figure applies 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 steps are set out in how the annual cost is calculated.
Against the 271 models registered as an electric tankless unit at the very small draw pattern, this unit uses 13 kWh more than the class median of 615 kWh. It ranks 188th lowest for energy use among 271, which is in the second-highest quarter of its class for energy use. The data does not show why it sits above the median, so this page gives no reason. The very small draw pattern covers small units: a single bathroom, or a point-of-use heater under a sink. The registry lists a maximum flow rate in gallons per minute of 0.7 for this model.
The running cost is not stated here because it depends on your own utility electricity tariff. The cost calculator applies your ZIP to the 628 kWh figure, and this page gives no estimate of its own. The installed-price range appears in its own block with its source and date, as a modeled range and not a quote. The 628 kWh does not apply if your hot-water demand is larger than the very small draw pattern, because the test draw would then differ. In that case, use the selector by fuel, space and size, or find a same-class replacement by model number to compare against the Chronomite CM.
DOE CCD · 2026-09-19