DoesTheMath

FRIEDRICH PRO H40 T2 RH310BM

3.5 UEF DOE CCD · 2026-09-19
B

Grade B: 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).

You are checking the FRIEDRICH PRO H40 T2 RH310BM against its registry listing. At the medium draw pattern, the standard daily hot-water usage DOE tests against, it uses 928 kWh of electricity a year. That is 2,603 kWh below the 3,531 kWh median of 426 electric tank models.


Energy use per year

928 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 84 of 426, lowest energy first.

This model: 928 kWh

Solid line: this model (928 kWh). Dashed line: the class median.

Min 773 kWh Median 3,531 kWh Max 3,569 kWh

DOE CCD · 2026-09-19

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What it costs to run where you live

Enter your ZIP to see what this unit costs to run a year on your own utility’s electricity rate.


What the registry files

UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
3.5 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
60 gal DOE CCD · 2026-09-19
Rated Storage Volume the tank size in gallons
36 gal DOE CCD · 2026-09-19
On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
2021-01-31 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

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.

The annual energy figure on this page does not depend on this range and is unaffected.


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 · 2026-09-24

Does 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
  • Ambient temperatureEnter your numbers37°F min
  • Physical footprintEnter your numbers16" ⌀
  • Electrical supplyEnter your numbers240V, 21A max
ENERGY STAR · 2026-09-19

What these figures mean

The figure of 928 kWh is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 3.5 for this model, and from the daily hot-water draw in the DOE test for the medium draw pattern. That pattern stands for a typical three- or four-person household. The source is the DOE CCD, retrieved 2026-09-19. The value holds only at that test draw. A household that draws more or less hot water than the test assumes will use a different amount, and this page does not estimate it.

Of the 426 models registered as an electric tank at the medium draw pattern, this one ranks 84th lowest in energy use. That places it in the lowest quarter of its class. Its 928 kWh sits 2,603 kWh below the class median of 3,531 kWh. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 60 gallons. The rated volume is 36 gallons. The energy figure describes a household whose use matches the medium draw pattern. It does not describe a household with a different pattern, and it does not show whether the first hour rating covers your own busiest hour. Use the water heater selector to filter by fuel, space and size.

Running cost is not stated here because it depends on your own utility electricity rate. To estimate it, multiply 928 kWh by your rate per kilowatt-hour, or enter your ZIP in the cost calculator, which applies your local tariff. The calculation method explains how the annual cost is worked out. The same limit applies as above: the result holds at the medium draw pattern and the test's daily draw. An installed price range is not published for this model, because its ratings lie outside the range the cost database's model was fitted on, and that range is not stretched past it. No installed price is available.

DOE CCD · 2026-09-19

How this compares

The closest models in the same class — same fuel, type and draw pattern.


Keep going

UEF 3.5 · Grade B Price it on your ZIP