Data through June 2026
Running cost · Room Air Conditioners · ENERGY STAR certified
Century RXTS-101A
Under the DOE test basis of 750 hours a year, the Century RXTS-101A draws 500 kWh — about $92 at the U.S. average rate, concentrated in the months you actually run it. That's close to the middle of the certified pack — about 6% under the median room air conditioner, ranked 160 of 439. Where you live moves the bill from $66 a year in Nevada to $264 in Hawaii.
Uses 38% less energy than the U.S. federal minimum
Dimensions 13.5" H × 19.2" W × 22" D, 54 lb
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$92/yr
- Per month
- $7.64
- Per day
- 25¢
- Certified use
- 500 kWh/yr
- Cooling capacity
- 10,000 BTU/hr
- CEER
- 15
- Mounting
- Straddles Window
- Variable-speed compressor
- Yes
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $82 | |
| Alaska | 28.2¢ | $141 | |
| Arizona | 15.2¢ | $76 | |
| Arkansas | 14.1¢ | $71 | |
| California | 34.7¢ | $174 | |
| Colorado | 17.1¢ | $86 | |
| Connecticut | 24.3¢ | $122 | |
| Delaware | 19.3¢ | $96 | |
| District of Columbia | 24.4¢ | $122 | |
| Florida | 15.1¢ | $76 | |
| Georgia | 16.4¢ | $82 | |
| Hawaiipriciest | 52.7¢ | $264 | |
| Idaho | 14.4¢ | $72 | |
| Illinois | 19.9¢ | $99 | |
| Indiana | 17.5¢ | $88 | |
| Iowa | 15.9¢ | $80 | |
| Kansas | 15.7¢ | $79 | |
| Kentucky | 14.3¢ | $71 | |
| Louisiana | 13.5¢ | $67 | |
| Maine | 29.6¢ | $148 | |
| Maryland | 21.8¢ | $109 | |
| Massachusetts | 29.6¢ | $148 | |
| Michigan | 23.0¢ | $115 | |
| Minnesota | 17.5¢ | $88 | |
| Mississippi | 14.9¢ | $74 | |
| Missouri | 16.2¢ | $81 | |
| Montana | 15.1¢ | $76 | |
| Nebraska | 13.3¢ | $66 | |
| Nevadacheapest | 13.1¢ | $66 | |
| New Hampshire | 27.0¢ | $135 | |
| New Jersey | 24.9¢ | $125 | |
| New Mexico | 15.1¢ | $75 | |
| New York | 29.5¢ | $147 | |
| North Carolina | 14.7¢ | $74 | |
| North Dakota | 14.1¢ | $71 | |
| Ohio | 19.2¢ | $96 | |
| Oklahoma | 14.3¢ | $72 | |
| Oregon | 16.3¢ | $82 | |
| Pennsylvania | 21.7¢ | $109 | |
| Rhode Island | 29.2¢ | $146 | |
| South Carolina | 15.6¢ | $78 | |
| South Dakota | 15.4¢ | $77 | |
| Tennessee | 14.1¢ | $70 | |
| Texas | 15.9¢ | $80 | |
| Utah | 13.4¢ | $67 | |
| Vermont | 24.4¢ | $122 | |
| Virginia | 17.2¢ | $86 | |
| Washington | 14.9¢ | $75 | |
| West Virginia | 15.4¢ | $77 | |
| Wisconsin | 19.6¢ | $98 | |
| Wyoming | 15.2¢ | $76 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| BLACK+DECKER BD10NWES | 500 | $92 |
| Comfort Aire RXTS-101A | 500 | $92 |
| Danby DAC100B8IWDB-6 | 500 | $92 |
| DELLA 048-TL-W10KI | 500 | $92 |
| ELEMENT EHWR10BE | 500 | $92 |
| Friedrich CCV10A10A | 500 | $92 |
Run your own numbers
Your rate, your numbers
- Per day
- 25¢
- Per month
- $7.64
- Per year
- $92
500 kWh/yr × 18.3¢/kWh = $92/yr
Prefilled with this model's certified 500 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh assumes 750 cooling hours per year (the DOE standard). In hot climates real usage can run well above that; in mild ones, below.
Questions, answered with the data
- How much electricity does the Century RXTS-101A use?
- ENERGY STAR certifies the Century RXTS-101A at 500 kWh per year. The certified annual kWh assumes 750 cooling hours per year (the DOE standard). In hot climates real usage can run well above that; in mild ones, below.
- How much does the Century RXTS-101A cost to run per month?
- About $7.64 a month at the U.S. average residential rate (18.3¢/kWh) — 25¢ a day, or $92 a year. Your state's rate moves this up or down; see the table above.
- Is the Century RXTS-101A energy efficient?
- It uses 6% less electricity than the median certified room air conditioner.
- What does the Century RXTS-101A cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $66 a year in Nevada (13.1¢/kWh) and $264 in Hawaii (52.7¢/kWh).