RELIANCE WATER HEATERS UPVA-55E 1**
0.92 UEF DOE CCD · 2026-09-19Grade G: 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's energy use, the RELIANCE WATER HEATERS UPVA-55E 1** uses 642 kWh of electricity a year at the very small draw pattern, the standard daily hot-water usage DOE tests against. That is 27 kWh above the class median of 615 kWh among 271 models.
Energy use per year
642 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 249 of 271, lowest energy first.
Solid line: this model (642 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
- 0.92 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
$1,294–$1,742 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 RELIANCE WATER HEATERS model on file
What this brand files, by heater type.
UEF 0.92 · Grade G Price it on your ZIP
The figure of 642 kWh is not printed in the registry. This site computed it from the registered UEF, the ratio of hot water delivered to energy used, which is 0.92 for this model, and from the DOE test's daily hot-water draw for the very small pattern. The data comes from DOE CCD, retrieved 2026-09-19. Among the 271 electric tankless models at this draw pattern, it ranks 249th lowest in energy use. Actual household use is not in the data. The steps are described in how the annual cost is calculated.
This model's maximum flow rate in gallons per minute is 0.5. The very small draw pattern covers small units, such as a single bathroom or a point-of-use heater under a sink, so the figure applies to that kind of use. It suits a reader checking a unit of that kind against its class. It does not suit a reader comparing for a larger household, because the data here covers only the very small pattern. Its 642 kWh is 27 kWh above the class median of 615 kWh, in the highest quarter of its class for energy use. To filter by fuel, space and size, use the water heater selector. To compare within the class, find a same-class replacement by model number.
The running cost is not stated here, because it depends on the electricity tariff you pay. The cost calculator on your own ZIP applies your tariff to 642 kWh. The same tariff applies to the 27 kWh gap from the class median of 615 kWh, so that gap costs more or less depending on your rate. Actual use in your home is unknown, because the figure assumes the federal test's daily draw for the very small pattern. The installed cost appears in its own block with its source and date, as a modeled range and not a quote. The energy data source is DOE CCD, retrieved 2026-09-19.
DOE CCD · 2026-09-19