Our take in 30 seconds
Best for: cold and very cold climatesStrengths
- Keeps 90% of its heat at 5°F, so backup heat rarely runs
- Heating efficiency (HSPF2 12) beats 96% of models
- Cooling efficiency up to SEER2 28.1, better than 98% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
Good to know
- Uses R-410A, a refrigerant being phased down; future service may cost more
- Efficiency depends on the indoor unit: SEER2 ranges 20.2–28.1, so ask which pairing you're quoted
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (20.2) and HSPF2 (12). 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/OQ at the three ENERGY STAR test temperatures (cooling capacity is 9,000 BTU/h for reference).
Retention at 17°F: 84% · at 5°F: 90%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $205 a year in Louisiana to $895 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¢ | $90 | $115 | $205 |
| Florida | 14.99¢ | $67 | $160 | $228 |
| Mississippi | 14.43¢ | $130 | $116 | $246 |
| Arizona | 15.05¢ | $105 | $148 | $253 |
| Nevada | 12.72¢ | $153 | $102 | $255 |
| Tennessee | 13.42¢ | $188 | $78 | $266 |
| Washington | 14.63¢ | $249 | $23 | $272 |
| North Carolina | 14.95¢ | $194 | $87 | $281 |
| Arkansas | 14.37¢ | $187 | $96 | $283 |
| Texas | 15.91¢ | $143 | $142 | $285 |
| South Carolina | 15.76¢ | $173 | $112 | $286 |
| Oregon | 15.92¢ | $255 | $32 | $287 |
| Georgia | 15.90¢ | $175 | $113 | $288 |
| Kentucky | 13.80¢ | $221 | $68 | $288 |
| Alabama | 16.33¢ | $180 | $116 | $296 |
| Utah | 13.31¢ | $253 | $53 | $306 |
| Oklahoma | 14.82¢ | $207 | $99 | $307 |
| New Mexico | 16.51¢ | $248 | $74 | $321 |
| Idaho | 13.37¢ | $281 | $42 | $322 |
| Nebraska | 13.54¢ | $284 | $54 | $339 |
| Missouri | 16.02¢ | $272 | $79 | $351 |
| Virginia | 17.64¢ | $265 | $86 | $351 |
| West Virginia | 16.31¢ | $294 | $58 | $352 |
| Kansas | 15.47¢ | $278 | $76 | $354 |
| Wyoming | 14.43¢ | $361 | $32 | $393 |
| Colorado | 17.17¢ | $343 | $54 | $397 |
| California | 29.75¢ | $268 | $133 | $400 |
| Delaware | 18.70¢ | $318 | $83 | $401 |
| Indiana | 17.02¢ | $340 | $64 | $405 |
| North Dakota | 13.31¢ | $386 | $27 | $413 |
| Montana | 15.57¢ | $389 | $31 | $420 |
| South Dakota | 15.15¢ | $379 | $44 | $423 |
| Iowa | 17.06¢ | $392 | $57 | $449 |
| Ohio | 19.38¢ | $388 | $69 | $457 |
| Maryland | 21.40¢ | $364 | $95 | $459 |
| Illinois | 19.32¢ | $406 | $69 | $475 |
| Minnesota | 17.20¢ | $464 | $42 | $507 |
| Pennsylvania | 21.77¢ | $435 | $78 | $513 |
| Wisconsin | 19.41¢ | $485 | $52 | $537 |
| New Jersey | 24.61¢ | $443 | $99 | $542 |
| District of Columbia | 25.98¢ | $416 | $127 | $543 |
| Hawaii | 47.18¢ | $24 | $547 | $570 |
| Connecticut | 24.51¢ | $539 | $71 | $610 |
| Michigan | 22.99¢ | $552 | $61 | $613 |
| Vermont | 23.84¢ | $620 | $48 | $668 |
| Rhode Island | 28.18¢ | $620 | $75 | $695 |
| New York | 28.65¢ | $630 | $83 | $713 |
| New Hampshire | 27.64¢ | $691 | $62 | $753 |
| Massachusetts | 30.48¢ | $701 | $81 | $783 |
| Maine | 32.11¢ | $835 | $57 | $892 |
| Alaska | 29.41¢ | $882 | $13 | $895 |
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/OQ 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 (−$77) | Compare |
| Bryant 37MAHAQ09AA3 | 9,000 | 20.6–27.5 | 13.8 | 99% | $340 (−$40) | Compare |
| Bryant 37MARAQ09AA3 | 9,000 | 19.6–26 | 13.9 | 78% | $322 (−$58) | Compare |
| Senville SENA-09HF-OG | 9,000 | 21.4–27.4 | 12.5 | 96% | $363 (−$17) | Compare |
| Mitsubishi Electric SUZ-AA09NL*** | 9,000 | 17.6–21.7 | 12.9 | 53% | $372 (−$7) | Compare |
| Gree GWH09AVDXE-D6DNA1A/O | 9,100 | 22.3–30 | 11.2 | 108% | $357 (−$23) | Compare |
Full specifications
| Brand | Senville |
| Outdoor model | SENA/09HF/OQ |
| Certified by | Senville Air Conditioners |
| Product type | Mini-split / multi-split |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-410A |
| Cooling capacity | 9,000 BTU/h |
| Nominal size | 1 ton |
| SEER2 (certified range) | 20.2 – 28.1 |
| EER2 (best) | 16.2 |
| HSPF2 (best) | 12 |
| Heating capacity @ 47°F | 12,000 BTU/h |
| Heating capacity @ 17°F | 10,100 BTU/h |
| Heating capacity @ 5°F | 10,800 BTU/h |
| COP @ 5°F | 2 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 5 |
| Latest certification | 2026-06 |
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/OQ 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 $380 per year ($291 heating, $89 cooling). It ranges from about $205 in Louisiana to $895 in Alaska.
Does the Senville SENA/09HF/OQ work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 10,800 BTU/h at 5°F, 90% of its 47°F capacity, with a COP of 2 at 5°F.
What size is the Senville SENA/09HF/OQ?
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.