Richmond RTGH-90DVLN-3
0.93 UEF DOE CCD · 2026-09-19Grade C: 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 RTGH-90DVLN-3, here is what its figures show. This gas tankless unit uses 182 therms of natural gas a year at the high draw pattern, the standard daily hot-water usage DOE tests against. That is equal to the median of the 397 gas tankless models at the same draw pattern; it ranks 183rd lowest.
Energy use per year
182 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 182 therms for the 397 models registered in the same heater type and draw pattern; it ranks 183 of 397, lowest energy first.
Solid line: this model (182 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
- 0.93 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
- 4.9 gal/min DOE CCD · 2026-09-19
What it costs to install
$2,264–$3,294 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 Richmond model on file
What this brand files, by heater type.
UEF 0.93 · Grade C Price it on your ZIP
The 182 therms figure is computed by this site, not taken from the registry. It uses the registry's UEF, the ratio of hot water delivered to energy used, which is 0.93 for this model. It pairs that with the DOE test's daily hot-water draw for the high draw pattern. The source is the DOE Compliance Certification Database, retrieved 2026-09-19. Because the test fixes the daily draw, the figure describes use at that draw only. A household drawing a different amount of hot water will use a different amount of gas, and that value is not available here. Against its class, the difference from the median is 0 therms, which places the unit in the second-lowest quarter for energy use. The full method is set out in how the annual cost is calculated.
The high draw pattern stands for a larger household, or one where showers and laundry overlap. A home that fits that description is the case the 182 therms figure describes. The registry lists a maximum flow rate in gallons per minute of 4.9 for this unit. The data does not say how many fixtures that flow covers at once, so that is unknown here. A smaller household that draws less hot water is not the tested case. Its yearly gas use would differ from 182 therms, and no figure for it is available in the data. To compare other units by the conditions of your own home, use the selector by fuel, space and size.
The text on this page does not state a running cost. The cost of 182 therms of natural gas depends on your state's average residential gas price, so the page computes it from your ZIP instead. Enter it in the cost calculator on your own ZIP to see the figure for your rate. The rank of 183rd of 397 does not change with price, because every model in the class is measured at the same high draw. If you are matching a unit to RTGH-90DVLN-3, you can find a same-class replacement by model number. The installed-price range appears in its own block with its source and date. It is a modeled range, not a quote.
DOE CCD · 2026-09-19