Ruud PROPH40 T2 RH400-15
651 kWh a year DOE CCD (opens in a new tab) (the U.S. Department of Energy’s Compliance Certification Database) · 2026-10-25UEF 3.45 filed efficiency; the yearly figure is computed from it
Grade A: where this UEF sits among the 170 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
A heat pump water heater (filed by DOE as an electric tank, UEF 2.0 and up), low draw pattern (a one- or two-person household).
Label numbers this filing covers (2)
The model number on your rating plate may be any of these; each is filed under this one listing.
- PROUH40 T2 RU375-15
- PROUH40 T2 RU400-15
Energy use per year
651 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.
This model is in the lowest quarter of its class for energy use. That is below the median of 2,439 kWh for the 170 models registered in the same heater type and draw pattern; it ranks 1 of 170, lowest energy first.
Among the 11 heat pump water heaters at this draw pattern alone, it ranks 1 by lowest yearly energy.
This model 651 kWh
Median 2,439 kWh
Min 651 kWh Max 2,550 kWh
What it costs to run where you live
What the registry files
From DOE CCD · 2026-10-25
- UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
- 3.45 Compared only with other models registered as an electric tank at the low draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Low
- First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
- 46 gal
- Rated Storage Volume the tank size in gallons
- 36 gal Rated volume is the size the registry files. The number in a model name is the maker's nominal size and can differ: a "40-gallon" model may be rated at 36.
From ENERGY STAR · 2026-10-25
- On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
- 2020-04-30
- 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)
- Yes (CTA-2045-B)
- 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
Installed cost and service life
Not published: Installed cost range
This model's rated tank size lies outside the range NLR REMDB's cost model was fitted on, and the range is not stretched past it.
Ask installers for a written quote that names this model number; heat pump installs are quoted unit by unit. State programs that pay toward one are listed on the rebates page.
Service life: DOE’s cost database assumes 14.8 years for heat pump tanks. That is a class assumption, not this model’s rating or a warranty — no registry publishes either.
NLR REMDB v4.0.0 · 2026-09-07Rebates this model qualifies for
- Efficiency Arizona, Arizona: last checked 2026-10-21; confirm on the program's page
- Home Electrification and Appliance Rebates (HEAR), Colorado: not paying now
- High-Efficiency Electric Home Rebates (HEEHR), Florida: not paying now
- Home Electrification and Appliance Rebates (HEAR), Georgia: not paying now
- Home Electrification and Appliance Rebate (HEAR), Texas: not paying now
- Home Appliance Rebate Program (HARP), Washington: not paying now
This model meets each program's model rules. Your household's own rules (income, what it replaces) are on each state page. Every state program on file.
Safety 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
How this compares
The closest models in the same class — same fuel, type and draw pattern — that have their own comparison page.
Keep going
How every figure on this page is calculated
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Find what replaces your water heater
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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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Clothes washers
What a washer uses in a year, including the hot water it draws.
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Every Ruud model on file
What this brand files, by heater type.
651 kWh/yr Grade A Cost on your ZIP