Our take in 30 seconds
Best for: cold and very cold climatesStrengths
- Keeps 96% of its heat at 5°F, so backup heat rarely runs
- Heating efficiency (HSPF2 12.5) beats 97% of models
- Cooling efficiency up to SEER2 27.4, better than 97% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
Good to know
- Efficiency depends on the indoor unit: SEER2 ranges 21.4–27.4, so ask which pairing you're quoted
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (21.4) and HSPF2 (12.5). Assumes the unit is correctly sized. How we calculate.
Heating capacity as it gets colder
A heat pump's output falls as outdoor temperature drops. This is the certified heat output of the Senville SENA-09HF-OG at the three ENERGY STAR test temperatures (cooling capacity is 9,000 BTU/h for reference).
Retention at 17°F: 100% · at 5°F: 96%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $195 a year in Louisiana to $859 in Alaska, driven by local electricity prices and how much heating or cooling the climate needs. Click a column to sort.
| State | Price | Heating | Cooling | Total / yr |
|---|---|---|---|---|
| Louisiana | 12.87¢ | $86 | $108 | $195 |
| Florida | 14.99¢ | $65 | $151 | $216 |
| Mississippi | 14.43¢ | $125 | $109 | $234 |
| Arizona | 15.05¢ | $101 | $139 | $240 |
| Nevada | 12.72¢ | $147 | $96 | $243 |
| Tennessee | 13.42¢ | $180 | $73 | $254 |
| Washington | 14.63¢ | $239 | $22 | $260 |
| North Carolina | 14.95¢ | $187 | $82 | $268 |
| Arkansas | 14.37¢ | $179 | $91 | $270 |
| Texas | 15.91¢ | $137 | $134 | $271 |
| South Carolina | 15.76¢ | $166 | $106 | $272 |
| Oregon | 15.92¢ | $245 | $30 | $275 |
| Georgia | 15.90¢ | $168 | $107 | $275 |
| Kentucky | 13.80¢ | $212 | $64 | $276 |
| Alabama | 16.33¢ | $172 | $110 | $282 |
| Oklahoma | 14.82¢ | $199 | $93 | $293 |
| Utah | 13.31¢ | $243 | $50 | $293 |
| New Mexico | 16.51¢ | $238 | $69 | $307 |
| Idaho | 13.37¢ | $270 | $39 | $309 |
| Nebraska | 13.54¢ | $273 | $51 | $324 |
| Missouri | 16.02¢ | $261 | $74 | $336 |
| Virginia | 17.64¢ | $254 | $82 | $336 |
| West Virginia | 16.31¢ | $282 | $55 | $337 |
| Kansas | 15.47¢ | $267 | $72 | $339 |
| Wyoming | 14.43¢ | $346 | $30 | $377 |
| Colorado | 17.17¢ | $330 | $51 | $380 |
| California | 29.75¢ | $257 | $125 | $382 |
| Delaware | 18.70¢ | $305 | $79 | $384 |
| Indiana | 17.02¢ | $327 | $61 | $388 |
| North Dakota | 13.31¢ | $371 | $25 | $396 |
| Montana | 15.57¢ | $374 | $29 | $403 |
| South Dakota | 15.15¢ | $364 | $41 | $405 |
| Iowa | 17.06¢ | $377 | $54 | $430 |
| Ohio | 19.38¢ | $372 | $65 | $437 |
| Maryland | 21.40¢ | $349 | $90 | $439 |
| Illinois | 19.32¢ | $389 | $65 | $454 |
| Minnesota | 17.20¢ | $446 | $40 | $486 |
| Pennsylvania | 21.77¢ | $418 | $73 | $491 |
| Wisconsin | 19.41¢ | $466 | $49 | $515 |
| New Jersey | 24.61¢ | $425 | $93 | $518 |
| District of Columbia | 25.98¢ | $399 | $120 | $519 |
| Hawaii | 47.18¢ | $23 | $516 | $539 |
| Connecticut | 24.51¢ | $518 | $67 | $585 |
| Michigan | 22.99¢ | $530 | $58 | $588 |
| Vermont | 23.84¢ | $595 | $45 | $640 |
| Rhode Island | 28.18¢ | $595 | $71 | $666 |
| New York | 28.65¢ | $605 | $78 | $683 |
| New Hampshire | 27.64¢ | $663 | $58 | $721 |
| Massachusetts | 30.48¢ | $673 | $77 | $750 |
| Maine | 32.11¢ | $801 | $54 | $855 |
| Alaska | 29.41¢ | $847 | $12 | $859 |
Similar-size alternatives
Other mini-split / multi-split units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Senville SENA-09HF-OG at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Fujitsu AOUH09KTAP1 | 9,000 | 33.5–33.5 | 14 | 142% | $303 (−$60) | Compare |
| Bryant 37MAHAQ09AA3 | 9,000 | 20.6–27.5 | 13.8 | 99% | $340 (−$23) | Compare |
| Bryant 37MARAQ09AA3 | 9,000 | 19.6–26 | 13.9 | 78% | $322 (−$41) | Compare |
| Mitsubishi Electric SUZ-AA09NL*** | 9,000 | 17.6–21.7 | 12.9 | 53% | $372 (+$9) | Compare |
| Senville SENA/09HF/OQ | 9,000 | 20.2–28.1 | 12 | 90% | $380 (+$17) | Compare |
| Gree GWH09AVDXE-D6DNA1A/O | 9,100 | 22.3–30 | 11.2 | 108% | $357 (−$6) | Compare |
Full specifications
| Brand | Senville |
| Outdoor model | SENA-09HF-OG |
| Certified by | Senville Air Conditioners |
| Product type | Mini-split / multi-split |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 9,000 BTU/h |
| Nominal size | 1 ton |
| SEER2 (certified range) | 21.4 – 27.4 |
| EER2 (best) | 15.4 |
| HSPF2 (best) | 12.5 |
| Heating capacity @ 47°F | 12,000 BTU/h |
| Heating capacity @ 17°F | 12,000 BTU/h |
| Heating capacity @ 5°F | 11,500 BTU/h |
| COP @ 5°F | 1.89 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 4 |
| Latest certification | 2026-05 |
Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), retrieved November 7, 2026. Capacities and HSPF2 are the highest values across certified pairings; confirm your exact system's AHRI reference number with your installer.
Frequently asked questions
How much does the Senville SENA-09HF-OG cost to run per year?
At the U.S. average residential electricity price of 18.16¢/kWh and typical national heating and cooling hours, we estimate about $363 per year ($279 heating, $84 cooling). It ranges from about $195 in Louisiana to $859 in Alaska.
Does the Senville SENA-09HF-OG work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 11,500 BTU/h at 5°F, 96% of its 47°F capacity, with a COP of 1.89 at 5°F.
What size is the Senville SENA-09HF-OG?
It is rated at 9,000 BTU/h of cooling, roughly 1 ton, and 12,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.