Ruud PROPH50 T0 RH120-M
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-M, this electric tank uses 1,083 kWh of electricity a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. That is 2,448 kWh below the 3,531 kWh median of the 426 electric tanks registered at the same 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
- 55 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
- 2022-04-21 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
-
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.
-
Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
-
What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
-
What size heat pump water heater do I need?
Answered from what models in this size actually file.
-
Water heaters
Every model on file with the Department of Energy, by heater type.
-
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.
-
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.
-
Every Ruud model on file
What this brand files, by heater type.
UEF 3 · Grade C Price it on your ZIP
The 1,083 kWh figure is computed by this site, not published by the registry. It combines the model's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the medium draw pattern. The Ruud PROPH50 T0 RH120-M has a UEF of 3, taken from DOE CCD data retrieved 2026-09-19. The figure holds only at that test draw. A household drawing more or less hot water each day will use a different amount, which this page does not show. Among the 426 models registered as an electric tank at the medium draw pattern, this one ranks 116th lowest in energy use. The page on how this site calculates annual energy and cost lists each input behind the figure.
The medium draw pattern stands for a typical mid-sized household. The Ruud PROPH50 T0 RH120-M has a first hour rating, the gallons of hot water available in the first hour from a full tank, of 55 gallons. Its rated volume is 46 gallons. A home whose busiest hour stays within 55 gallons matches the conditions behind the energy figure. A home that regularly draws more in its busiest hour sits outside those conditions, and the 1,083 kWh figure was not computed for that use. How this unit performs at other draw patterns is not available in the data. To compare other units, the water heater selector by fuel, space and size filters the registry. To find a unit in the same class, use the same-class replacement search by model number.
The running cost is not stated in this text. It depends on your own utility's electricity tariff. The page therefore computes it from your ZIP, applying your rate to the 1,083 kWh used at the medium draw pattern. The running cost calculator for your own ZIP shows that result. This model ranks 116th lowest of 426 for energy use. On any single rate, its cost is therefore lower than that of a class model using the median 3,531 kWh; the size of that gap depends on the rate. The installed price range appears in its own block, with its source and date, as a modeled range rather than a quote. This page cannot show the unit's energy use at your household's actual daily draw; that is unknown.
DOE CCD · 2026-09-19