Ranein RA65EH
0.82 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 80 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
A gas tankless unit, medium draw pattern (a typical three- or four-person household, about 55 gallons on a busy morning).
If you are checking the Ranein RA65EH, a gas tankless unit, it uses 135 therms of natural gas a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. That matches the class median of 135 therms across 80 registered models, a difference of 0 therms.
Energy use per year
135 therms 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 natural gas rate where you live.
That is equal to the median of 135 therms for the 80 models registered in the same heater type and draw pattern; it ranks 32 of 80, lowest energy first.
Solid line: this model (135 therms). Dashed line: the class median.
Min 114 therms Median 135 therms Max 137 therms
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
- 0.82 DOE CCD · 2026-09-19 Compared only with other models registered as a gas tankless unit at the medium draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Medium DOE CCD · 2026-09-19
- Maximum Gallons Per Minute how many gallons a minute it can heat while running continuously
- 3.9 gal/min DOE CCD · 2026-09-19
What it costs to install
$1,745–$2,687 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 gas tankless water heaters
Gas-fired instantaneous units, sized by flow rate rather than tank gallons.
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Every Ranein model on file
What this brand files, by heater type.
UEF 0.82 · Grade G Price it on your ZIP
The Ranein RA65EH has a UEF, the ratio of hot water delivered to energy used, of 0.82. Its maximum flow rate in gallons per minute is 3.9. This site computed 135 therms from that UEF and the daily hot-water draw the DOE test sets for the medium pattern. That pattern stands for a typical household on a busy morning. The registry does not publish the annual figure itself. The source is DOE CCD, retrieved 2026-09-19, and the fuel is natural gas. The figure holds only under those test conditions. A home with different hot-water use would have a different annual figure, which this page does not estimate.
Among the 80 models registered as a gas tankless unit at the medium draw pattern, this one ranks 32nd lowest in energy use. That places it in the quarter of its class just above the lowest energy users. Its 135 therms equals the class median of 135 therms, so the difference is 0 therms. The figure suits a household whose hot-water use resembles the medium pattern. It applies less well to a household whose use is far from that pattern. Peak demand is a separate question, and the maximum flow rate of 3.9 gallons per minute should be compared with your own simultaneous use. The selector by fuel, space and size can help with that comparison, and you can find a same-class replacement by model number to check another unit against this one.
The running cost is not stated here because it depends on your state's average residential gas price. To check it by hand, multiply 135 therms by your own gas rate per therm. The cost calculator on your own ZIP does this with the state average price. The page on how the annual cost is calculated sets out the method. The modeled installed-cost range appears in its own block with its source and date. It is a modeled range, not a quote, and is not repeated in this text. The 135 therms figure is a test-condition value, and the data does not measure actual use in any single home.
DOE CCD · 2026-09-19