CAMMOO RV-65000B
0.89 UEF DOE CCD · 2026-09-19No A–G grade: Fewer than 8 models share this heater type, fuel and draw pattern, too few for a fair A-G scale.
A gas tankless unit, very small draw pattern (small units - a single bathroom, or a point-of-use heater under a sink).
Checking the CAMMOO RV-65000B? This site computes 23 therms of natural gas a year for it at the very small draw pattern, the standard daily hot-water usage DOE tests against. No class median is shown, because too few models share this class and draw pattern.
Energy use per year
23 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.
Not published: Class comparison
Too few models share this heater type and draw pattern for a fair class median, so no comparison is shown.
The yearly energy figure above stands on its own and does not depend on the class.
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
- 0.89 DOE CCD · 2026-09-19 Compared only with other models registered as a gas tankless unit at the very small draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Very small DOE CCD · 2026-09-19
- Maximum Gallons Per Minute how many gallons a minute it can heat while running continuously
- 1.6 gal/min DOE CCD · 2026-09-19
What it costs to install
$2,075–$3,074 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 0.89 Price it on your ZIP
The figure of 23 therms is not a registry value. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.89 for this model. It also used the daily hot-water draw that the DOE test assigns to the very small draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The fuel is natural gas. The figure holds only at that test draw. Real household use can differ, and this page does not estimate it. Because too few models share this class and draw pattern, no rank or median difference is given.
The very small draw pattern covers small units: a single bathroom, or a point-of-use heater under a sink. The 23 therms figure describes that pattern only. This model's maximum flow rate in gallons per minute is 1.6. The data on this page does not give annual energy for any other draw pattern, so it does not carry over to a household with larger demand. A reader who needs to check the class or size can use the water heater selector. A reader looking for a unit in the same class can find a same-class replacement by model number.
The running cost is not written in the text, because it depends on your state's average residential gas price. It follows from the 23 therms figure at the test draw and the price you pay per therm. The cost calculator applies your own ZIP to this model's energy figure. The steps behind that calculation are set out in the annual cost methodology. The modeled installed-cost range appears in its own block on the page, with its source and date. It is a modeled range, not a quote, and it is not repeated here.
DOE CCD · 2026-09-19