RELIANCE WATER HEATERS FPTU-66 1**
3.42 UEF DOE CCD · 2026-09-19Grade C: where this UEF sits among the 194 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, high draw pattern (a larger household, or one where showers and laundry overlap).
You are checking the RELIANCE WATER HEATERS FPTU-66 1**, an electric tank. At the high draw pattern, the standard daily hot-water usage DOE tests against, it uses 1,451 kWh a year. That is 145 kWh above the class median of 1,306 kWh, ranking 152nd lowest of 194 models.
Energy use per year
1,451 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 above the median of 1,306 kWh for the 194 models registered in the same heater type and draw pattern; it ranks 152 of 194, lowest energy first.
Solid line: this model (1,451 kWh). Dashed line: the class median.
Min 1,002 kWh Median 1,306 kWh Max 5,334 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
- 3.42 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tank at the high draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- High 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
- 79 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 67 gal DOE CCD · 2026-09-19
- On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
- 2019-04-05 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
$3,699–$4,278 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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Every RELIANCE WATER HEATERS model on file
What this brand files, by heater type.
UEF 3.42 · Grade C Price it on your ZIP
The registry lists a UEF, the ratio of hot water delivered to energy used, of 3.42 for this model. This site, not the registry, computed 1,451 kWh from that UEF and the DOE test's daily hot-water draw. That figure applies to the high draw pattern and covers electricity only. It is 145 kWh above the class median of 1,306 kWh. Among the 194 electric tanks registered at this draw pattern, it ranks 152nd lowest in energy use. That places it in the highest quarter of its class for energy use. The methodology for the annual figure sets out how the calculation works.
The high draw pattern describes a larger household, or one where showers and laundry overlap. This model has a first hour rating, the gallons of hot water available in the first hour from a full tank. The registry value is 79 gallons, with a rated volume of 67 gallons. A reader who wants energy use near the class median of 1,306 kWh will find this model 145 kWh above it. The figure of 1,451 kWh applies only at the federal test's draw. A home with a different daily draw will use a different amount. That amount is not available in the data, so it is not estimated here. For a comparison by fuel, space and size, use the selector by fuel, space and size.
The running cost is not stated in this text. It depends on your own utility electricity rate. Multiply 1,451 kWh, the figure at the federal test's draw, by your rate per kWh. The cost calculator on your own ZIP does this with your local tariff. The installed price range appears in its own block on this page. It is a modeled installed-cost range, not a quote, and its source and date are shown with it. The energy data come from DOE CCD, retrieved 2026-09-19. To compare against another unit by model number, find a same-class replacement by model number. The class median at this draw pattern is 1,306 kWh.
DOE CCD · 2026-09-19