RELIANCE WATER HEATERS HPTA-40 2**
3.6 UEF DOE CCD · 2026-09-19Grade 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).
If you are checking the RELIANCE WATER HEATERS HPTA-40 2**, this electric tank uses 902 kWh of electricity a year. That figure is at the medium draw pattern, the standard daily hot-water usage DOE tests against. It sits 2,629 kWh below the 3,531 kWh median of the 426 electric tank models at that draw pattern.
Energy use per year
902 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 53 of 426, lowest energy first.
Solid line: this model (902 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
- 3.6 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
- 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
- 2024-03-01 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)
- Yes (CTA-2045-A,CTA-2045-B) 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 · 2026-09-24Does 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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Every RELIANCE WATER HEATERS model on file
What this brand files, by heater type.
UEF 3.6 · Grade B Price it on your ZIP
The 902 kWh figure is calculated by this site. It is not taken directly from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the daily hot-water draw that the DOE test sets for the medium draw pattern. This model's UEF is 3.6. The source is the DOE Compliance Certification Database (CCD), retrieved 2026-09-19. The annual figure holds only at that test draw. A household using a different amount of hot water each day would use a different amount of electricity. Among the 426 electric tank models at the medium draw pattern, this one ranks 53rd lowest in energy use. The steps behind the annual figure are set out in how the annual cost is calculated.
The registry lists a rated volume of 36 gallons for the HPTA-40 2**. It also lists a first hour rating of 55 gallons, which is the gallons of hot water available in the first hour from a full tank. A plumber or seller confirming a listing can check these two values against the registry entry. If a home's hot-water use in the first hour stays within 55 gallons, it falls inside what the rating describes. If a home regularly needs more hot water in that first hour, it falls outside the rating. This page has no data on how the unit performs in that case. To compare other units on the same terms, the water heater selector by fuel, space and size filters on these ratings.
The running cost is not given here because it depends on your own utility's electricity rate. The input is 902 kWh a year at the medium draw pattern. The running-cost calculator for your ZIP applies your local tariff to that figure. The 2,629 kWh gap to the class median is a difference in energy, not in money. Its value in money changes with your tariff. An installed price range is not available for this model. Its ratings lie outside the range that the cost database's model was fitted on. This page does not extend that range to cover them. To look for another unit in the same class, use the same-class replacement search by model number.
DOE CCD · 2026-09-19