Ranein RH12KG-C-NG
0.82 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 397 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
A gas tankless unit, high draw pattern (a larger household, or one where showers and laundry overlap).
If you are verifying the Ranein RH12KG-C-NG, a gas tankless unit, it uses 206 therms of natural gas a year. That figure is for the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 24 therms above its class median of 182 therms, and its energy use ranks 229th lowest of 397.
Energy use per year
206 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 above the median of 182 therms for the 397 models registered in the same heater type and draw pattern; it ranks 229 of 397, lowest energy first.
Solid line: this model (206 therms). Dashed line: the class median.
Min 173 therms Median 182 therms Max 209 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 high draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- High DOE CCD · 2026-09-19
- Maximum Gallons Per Minute how many gallons a minute it can heat while running continuously
- 5.1 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 registry does not print the 206 therms figure. This site calculated it from two inputs. The first is the registry's UEF, the ratio of hot water delivered to energy used, which is 0.82 for this model. The second is the DOE test's daily hot-water draw for the high draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The figure applies at the federal test's daily draw. It is not a measurement from any household. A home that uses more or less hot water than the test will use a different amount of gas, and this page does not have that amount. The full calculation is on the page that explains how the annual energy and cost figures are calculated.
The high draw pattern represents a larger household, or one where showers and laundry overlap. This model is compared with the 397 models registered as a gas tankless unit at that pattern. Its energy use ranks 229th lowest of them. At 206 therms, it sits 24 therms above the class median of 182 therms. That puts it in the second-highest quarter of its class for energy use. The listed maximum flow rate in gallons per minute is 5.1. For a smaller household, the 206 therms figure does not apply, and this page has no figure for a lower draw pattern. To compare it with other units at the same pattern, you can find a same-class replacement by model number.
The running cost is not stated in this text. It depends on your state's average residential gas price, so the page calculates it from your ZIP. The calculation starts from 206 therms of natural gas a year at the high draw pattern. This site does not know the cost for your home until you enter a ZIP. You can get that figure from the water heater cost calculator for your own ZIP. At the same gas rate, the 24 therms gap to the class median shows up in the cost in the same direction. The installed price appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote from an installer.
DOE CCD · 2026-09-19