Richmond RTG-70XLN-3
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 checking the Richmond RTG-70XLN-3, this gas tankless unit uses 206 therms of natural gas a year. That figure applies to the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 24 therms above the 182 therms median of the 397 gas tankless models registered at that pattern.
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
- 4 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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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 Richmond model on file
What this brand files, by heater type.
UEF 0.82 · Grade G Price it on your ZIP
This site computes the 206 therms figure; the registry does not publish it. The calculation combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the high pattern. For this model the UEF is 0.82. The source is the DOE CCD, retrieved 2026-09-19. In its class of 397, the model ranks 229th lowest for energy use. That puts it in the second-highest quarter of the class. The figure holds only at the test's daily draw. A household that draws more or less hot water will use a different amount, and that amount is not available here. The steps behind the figure are set out on the page explaining how the annual energy and cost figures are calculated.
The high draw pattern stands for a larger household, or one where showers and laundry overlap. The 206 therms figure describes a household of that kind. The registry lists a maximum flow rate in gallons per minute of 4 for this unit. That is the most hot water it delivers at once. The data does not show whether that rate covers a particular home's overlapping fixtures. A smaller household with lighter use falls outside this figure. This page has no energy figure for this model at a lighter pattern. Readers comparing other gas or electric units against their own space and household size can use the water heater selector by fuel, space and size.
The text gives no running cost because it depends on the reader's state average residential gas price. The page calculates that cost from the reader's ZIP. At the test's daily draw, the gap between this model and the 182 therms class median is 24 therms. That gap becomes a cost difference only at a local gas price, so this text does not state one. The running cost calculator for your own ZIP applies your rate to the 206 therms figure. The installed-cost range appears in its own block with its source and date. It is a modeled range, not a quote. To check a registered alternative in the same class, use the page to find a same-class replacement by model number.
DOE CCD · 2026-09-19