Ranein RH19K-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 RH19K-NG, a gas tankless unit, here is its annual figure. It uses 206 therms of natural gas a year at the high draw pattern, the standard daily hot-water usage DOE tests against. That is 24 therms above the 182 therms median for the 397 models in its class.
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
- 8.5 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
This site computed the 206 therms figure; the registry does not list annual energy for this model. The first input is the registry's UEF, the ratio of hot water delivered to energy used, which is 0.82 for this model. The second input is the DOE test's daily hot-water draw for the high pattern. The source is DOE CCD, retrieved 2026-09-19. The high draw pattern stands for a larger household, or one where showers and laundry overlap. The figure holds only at the test's daily draw. Energy use in a home that draws more or less hot water is not available from this data. The steps are set out in how this site calculates annual energy and cost.
Among the 397 models registered as a gas tankless unit at the high draw pattern, the RH19K-NG ranks 229th for lowest energy use. That puts it in the second-highest quarter of its class for energy use, above the class median given at the top of this page. Its maximum flow rate in gallons per minute is 8.5. The 206 therms figure applies to the household the high pattern describes. For a household that uses less hot water, the figure does not describe actual use. This page has no lower-draw value for this model. To compare models within the same class, use the same-class replacement search by model number.
The running cost of the RH19K-NG is not stated in this text. It depends on your state's average residential gas price, so the page computes it from your ZIP and the 206 therms yearly figure. Readers in different states will see different results for the same unit. Enter your ZIP in the running cost calculator for your own ZIP to see it. The installed-cost range appears in its own block on this page, with its source and date. It is a modeled range, not a quote. The registry does not show what a specific installation costs or how much gas a specific home burns.
DOE CCD · 2026-09-19