Kiturami KTGWH-180CWS1
0.95 UEF DOE CCD · 2026-09-19Grade B: 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).
For a second look at this unit's registry data: the Kiturami KTGWH-180CWS1 uses 178 therms of natural gas a year. That figure is for the high draw pattern, the standard daily hot-water usage DOE tests against. It is 4 therms below the class median of 182 therms across 397 registered gas tankless models.
Energy use per year
178 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 below the median of 182 therms for the 397 models registered in the same heater type and draw pattern; it ranks 45 of 397, lowest energy first.
Solid line: this model (178 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
- 0.95 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
- 5.2 gal/min DOE CCD · 2026-09-19
What it costs to install
$2,358–$3,405 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.
UEF 0.95 · Grade B Price it on your ZIP
The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.95 for this model. This site computed the annual figure of 178 therms, not the registry. It used the registry's UEF and the DOE test's daily hot-water draw for the high draw pattern. The figure therefore holds only at that test draw. Your own household's hot-water use may differ, and this page does not estimate the difference. The source is DOE CCD, retrieved 2026-09-19. The method is set out on the page about how the annual cost is calculated.
Among the 397 models registered as a gas tankless unit at the high draw pattern, this one has the 45th lowest energy use. That puts it in the lowest quarter of its class. Its annual use of 178 therms is 4 therms below the class median of 182 therms. The high draw pattern describes a larger household, or one where showers and laundry overlap. The figure fits that kind of use. It does not describe a smaller household, and this page has no figure for other draw patterns. The maximum flow rate in gallons per minute is 5.2. The registry data used here does not say how that flow performs in a particular home.
Running cost depends on your state's average residential gas price, so this page states none in the text. The cost calculator applies the price for your ZIP to the 178 therms at the high draw pattern. The installed price range appears in its own block with its source and date, as a modeled range and not a quote. To compare KTGWH-180CWS1 with other units of the same class, use the page to find a same-class replacement by model number. Any comparison should use the same high draw pattern, because the 182 therms class median applies only there.
DOE CCD · 2026-09-19