Ruud PROPH50 T0 RH120
3 UEF DOE CCD · 2026-09-19Grade C: where this UEF sits among the 426 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, medium draw pattern (a typical three- or four-person household, about 55 gallons on a busy morning).
If you are checking the Ruud PROPH50 T0 RH120, this electric tank uses 1,083 kWh of electricity a year. That figure is for the medium draw pattern, the standard daily hot-water usage DOE tests against. It sits 2,448 kWh below the 3,531 kWh median of the 426 electric tanks registered at that draw pattern.
Energy use per year
1,083 kWh 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 electricity rate where you live.
That is below the median of 3,531 kWh for the 426 models registered in the same heater type and draw pattern; it ranks 116 of 426, lowest energy first.
Solid line: this model (1,083 kWh). Dashed line: the class median.
Min 773 kWh Median 3,531 kWh Max 3,569 kWh
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
- 3 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tank at the medium draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Medium DOE CCD · 2026-09-19
- First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
- 51 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 46 gal DOE CCD · 2026-09-19
- On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
- 2022-07-15 ENERGY STAR · 2026-09-19
- Connected / demand response (ENERGY STAR) whether the unit can take signals from your utility to shift when it heats, and by which standard (such as CTA-2045)
- No ENERGY STAR · 2026-09-19
- Refrigerant and GWP (ENERGY STAR) the refrigerant a heat pump unit uses and its global warming potential, a leak's climate effect relative to carbon dioxide (CO2 = 1)
- R-134a, GWP 1430 ENERGY STAR · 2026-09-19
What it costs to install
$2,970–$3,660 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 · 2026-09-24Does it fit your space?
Enter your own numbers below — this compares them to what ENERGY STAR publishes for this model, it does not tell you what to buy.
- Compressor operating range (ENERGY STAR)
- the air temperatures around the unit in which its heat pump runs; outside this range the heat pump stops
- Dimensions (ENERGY STAR)
- the unit's filed height, width, depth or tank diameter, in inches
- Input voltage and maximum current (ENERGY STAR)
- the circuit voltage the unit is certified on and the most current it draws
What 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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What size heat pump water heater do I need?
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 heat pump water heaters
Electric tanks that file a UEF of 2.0 or more — the registry has no separate heat pump type, so this site draws the line there.
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All 120-volt plug-in heat pump water heaters
Heat pump models whose ENERGY STAR filing lists a 120 V input — the kind that can run from a standard outlet instead of a new 240 V circuit.
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Every Ruud model on file
What this brand files, by heater type.
UEF 3 · Grade C Price it on your ZIP
This site calculates the 1,083 kWh figure. The registry does not publish it. The calculation starts from the registry's UEF, the ratio of hot water delivered to energy used. It then applies the daily hot-water draw that DOE's test uses for the medium pattern. The UEF for this model is 3, from DOE's Compliance Certification Database (CCD), retrieved on 2026-09-19. This model ranks 116th lowest for energy use among the 426 electric tanks registered at the medium draw pattern. The 2,448 kWh gap to the class median applies only at the test's daily draw. A household that uses more or less hot water each day would use a different amount of energy, and this page does not have that figure. You can read the steps behind the calculation in how the annual cost is calculated.
In DOE's test, the medium draw pattern represents a typical household with a busy morning peak. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 51 gallons. Its rated volume is 46 gallons. If a home's daily hot-water use is close to the medium pattern, it matches the conditions behind the 1,083 kWh figure. If a home needs more than 51 gallons in its busiest hour, it needs more than a full tank of this model supplies in that hour. For that home, the figure does not describe its energy use, and no figure for a heavier pattern is available here. To compare other electric tanks, use the selector by fuel, space and size. To find a match within this class, search for a same-class replacement by model number.
This text does not state a running cost. The cost depends on your own utility's electricity tariff, applied to the 1,083 kWh this model uses a year at the medium draw pattern. For that reason, the page calculates the cost from your ZIP code and does not give one fixed figure. Enter your ZIP in the cost calculator for your own ZIP to see that result. The 2,448 kWh energy gap to the 3,531 kWh class median is measured before any rate is applied. The cost gap therefore also depends on your tariff. The installed price range appears in its own block on this page, with its source and date. It is a modeled installed-cost range, not a quote from an installer.
DOE CCD · 2026-09-19