Contents
- Refrigerator energy consumption statistics: U.S. shipment-weighted use by model year
- Refrigerator energy consumption statistics: rated annual use across sampled household units
- Refrigerator energy consumption statistics: top-mount freezer annual-use scenarios by capacity
- Refrigerator energy consumption statistics: side-mount refrigerator-freezer scenarios by volume
- Refrigerator energy consumption statistics: field-measured use across seasons and operating conditions
- Sources
Refrigerator energy consumption statistics: U.S. shipment-weighted use by model year
A shipment-weighted average describes the average use associated with refrigerators shipped in a model year, with shipments providing the weighting. It is a historical series, not a reading from a single refrigerator and not a current estimate. The Department of Energy (DOE) technical support document attributes the series to AHAM Fact Books and reports annual use in kilowatt-hours per year (kWh/yr).
The observations retained here show 693 kWh/yr for model years 1994 and 1995, followed by 708 in 1996, 728 in 1997, 738 in 1998, 762 in 1999, and 779 in 2000. The series then reports 611 kWh/yr for 2001, 576 in 2002, 589 in 2003, 559 in 2004, 550 in 2005, and 564 in 2006. The sequence makes clear that shipment-weighted use did not move in a single direction throughout these years: the reported values rose through 2000, then were lower in the subsequent entries, with smaller year-to-year changes in the later observations. These are the source’s yearly values; no cause for the changes is established by this table.
| Model year | Shipment-weighted average use (kWh/yr) |
|---|---|
| 1994 | 693 |
| 1995 | 693 |
| 1996 | 708 |
| 1997 | 728 |
| 1998 | 738 |
| 1999 | 762 |
| 2000 | 779 |
| 2001 | 611 |
| 2002 | 576 |
| 2003 | 589 |
| 2004 | 559 |
| 2005 | 550 |
| 2006 | 564 |
Source: DOE Refrigerators Final Rule Technical Support Document, Table 7-A.2.1.
These observations support comparisons within the reported historical series. They do not describe the full population of refrigerators in homes in a given year, because the measure is shipment-weighted and keyed to model year. They also should not be presented as present-day refrigerator consumption. The table’s units are annual energy use, not a monthly bill or a power rating.
Refrigerator energy consumption statistics: rated annual use across sampled household units
A separate DOE field study reported test-procedure ratings for individual refrigerators installed in participating households. Its Table 9 lists household size, refrigerator model year, freezer configuration, through-door ice access, and rated use. These ratings were based on the DOE test procedure with the ice maker off. The study obtained valid data for 19 households, while the entries below cover 10 identified units; they are sample observations, not a national household average.
| Field-study unit | Household members | Model year | Freezer configuration | Through-door access | Rated use (kWh/yr) |
|---|---|---|---|---|---|
| 1 | 4 | 2008 | Bottom-mount | No | 433 |
| 2 | 2 | 2000 | Side-by-side | Yes | 741 |
| 3 | 3 | 2004 | Bottom-mount | No | 464 |
| 4 | 2 | 2006 | Bottom-mount | No | 476 |
| 5 | 2 | 2009 | Bottom-mount | Yes | 552 |
| 6 | 5 | 2002 | Side-by-side | Yes | 606 |
| 7 | 5 | 2010 | Side-by-side | Yes | 506 |
| 8 | 1 | 2003 | Top-mount | No | 448 |
| 9 | 3 | 2009 | Side-by-side | Yes | 545 |
| 10 | 2 | 2008 | Top-mount | No | 416 |
Across these listed units, rated annual use ranges from 416 kWh/yr for Unit 10 to 741 kWh/yr for Unit 2. The household member counts range from 1 to 5. The configurations include bottom-mount, side-by-side, and top-mount designs; several listed side-by-side units have through-door access. These characteristics provide context for each unit’s rating, but this limited set does not establish a general relationship between configuration, household size, and energy use.
Rated values are standardized test-procedure results. They are useful for describing the study’s appliance ratings on a common basis, but they are not the same measure as the electricity recorded during household operation. The distinction matters when interpreting the next set of observations: field measurements in the same study were annualized from observed daily consumption, while Table 9 reports rated annual use under the test procedure.
Refrigerator energy consumption statistics: top-mount freezer annual-use scenarios by capacity
DOE’s October 2005 analysis also presented modeled annual-use scenarios for representative refrigerator-freezers. Table 4-17 covers top-mount freezer products without through-the-door (TTD) ice service. It groups products by total refrigerated-volume range and gives a representative adjusted total volume, followed by baseline, 15%-less-energy, and 25%-less-energy scenario values. The figures describe modeled products, not household measurements or the actual use of every product in a capacity band.
| Total refrigerated-volume range (cu. ft.) | Representative adjusted total volume (cu. ft.) | Baseline (kWh/yr) | 15% less energy (kWh/yr) | 25% less energy (kWh/yr) |
|---|---|---|---|---|
| 14–17 | 18.1 | 453 | 385 | 340 |
| 18–20 | 22.2 | 493 | 419 | 370 |
| 21–22 | 25.5 | 526 | 447 | 395 |
The table retains the report’s paired volume measures: each capacity band is shown alongside a representative adjusted total volume. That adjusted figure is not interchangeable with the band label. For example, the 14–17 cu. ft. range is paired with 18.1 cu. ft. of representative adjusted total volume, while the 21–22 cu. ft. range is paired with 25.5 cu. ft.
Within each row, the modeled annual-use value is lower in the 15%-less-energy scenario than in the baseline, and lower again in the 25%-less-energy scenario. The source names the scenarios as percentage energy reductions and supplies the resulting kWh/yr values; the table above reports those values directly without deriving additional estimates. Comparisons across rows also show that the listed baseline values differ by volume band, but they remain scenario outputs for this product configuration and service condition.
Refrigerator energy consumption statistics: side-mount refrigerator-freezer scenarios by volume
Table 4-18 of the same October 2005 DOE analysis covers side-mount refrigerator-freezers with TTD ice service. Its volume ranges, adjusted volumes, and three modeled annual-use scenarios are shown below. As with the top-mount table, this is a representative-product analysis rather than a record of measured household consumption.
| Total refrigerated-volume range (cu. ft.) | Representative adjusted total volume (cu. ft.) | Baseline (kWh/yr) | 15% less energy (kWh/yr) | 25% less energy (kWh/yr) |
|---|---|---|---|---|
| 21–23 | 26.9 | 677 | 576 | 508 |
| 24–26 | 31.0 | 719 | 611 | 539 |
| 27–30 | 35.2 | 762 | 647 | 571 |
The modeled baseline values shown are 677, 719, and 762 kWh/yr for the three ascending volume bands. In each row, the 15%-less-energy and 25%-less-energy scenarios are also provided, so readers can compare the report’s alternatives at the same representative volume. The model scenario labels and configuration are essential context: these figures should not be generalized to all side-mount appliances, to models without TTD ice service, or to actual in-home annual consumption.
Together, the two scenario tables preserve differences in configuration and service. The top-mount series is specifically without TTD ice service, while the side-mount series is specifically with TTD ice service. Their corresponding volume ranges also differ. A direct comparison between one row in each table therefore combines more than a capacity difference, and the data presented here do not isolate the effects of freezer position or ice service independently.
Refrigerator energy consumption statistics: field-measured use across seasons and operating conditions
The DOE field study’s Table 10 reports measured annualized energy consumption for sessions in participating homes. The report calculated these annualized figures by multiplying average daily consumption by 365. Thus, a session value expressed in kWh/year is an annualized rate derived from a limited measurement period, not an observation covering a full year. The table also distinguishes ice maker off and ice maker on conditions, and records average ambient temperature where available.
The entries below retain the ice-maker-on measurement for all supplied observations. Unit 1 had rated annual use of 433 kWh/year. Its spring session #1 measured 305 kWh/year with the ice maker on at an average ambient temperature of 68.1°F. Spring session #2 reported 333 kWh/year; ambient temperature was listed as N/A because of a sensor failure. The reported spring average was 319 kWh/year at 68.1°F. In the summer session, Unit 1 measured 461 kWh/year with the ice maker on, with an average ambient temperature of 76.2°F.
Unit 3 had rated annual use of 464 kWh/year. Its spring session #1 measured 746 kWh/year with the ice maker on at 67.9°F, and spring session #2 measured 893 kWh/year at 71.7°F. The reported spring average was 820 kWh/year at 69.8°F. In the summer session, its measured annualized use with the ice maker on was 782 kWh/year at 69.3°F. These are distinct readings for a particular appliance and sessions in the field study; the spring average is reported by the source and is not another appliance or an additional session.
| Unit and session | Rated use (kWh/year) | Measured use, ice maker on (kWh/year) | Average ambient temperature (°F) |
|---|---|---|---|
| Unit 1, spring session #1 | 433 | 305 | 68.1 |
| Unit 1, spring session #2 | 433 | 333 | N/A* |
| Unit 1, spring average | 433 | 319 | 68.1 |
| Unit 1, summer session | 433 | 461 | 76.2 |
| Unit 2, spring session #1 | 741 | 714 | 65.1 |
| Unit 3, spring session #1 | 464 | 746 | 67.9 |
| Unit 3, spring session #2 | 464 | 893 | 71.7 |
| Unit 3, spring average | 464 | 820 | 69.8 |
| Unit 3, summer session | 464 | 782 | 69.3 |
- N/A indicates the source’s unavailable ambient-temperature entry for Unit 1 spring session #2; the report notes a sensor failure. Annualized readings are derived from average daily use multiplied by 365.*
The field observations show why rated and measured values need to be identified separately. Unit 1’s listed spring and summer measurements with the ice maker on are annualized session values, while its 433 kWh/year figure is its test-procedure rating. Unit 3’s measured spring and summer session values are also reported alongside its 464 kWh/year rating. The study includes 19 households and 30 sessions overall, but these selected readings cover only the sessions and units named above. They describe observed operating conditions in that field study and do not establish a universal seasonal pattern or a present-day typical-use figure.