Senville SENA-33HF-OQ: certified ratings
Cooling 33,000 BTU/h · SEER2 up to 19.5 · HSPF2 up to 10 · up to 99% of 47°F heating capacity at 5°F · Cold climate: Yes
ENERGY STAR lists 1 certified indoor pairing for this outdoor unit. Series: SEN series. Refrigerant: R-410A. Compressor: continuously variable (inverter), per ENERGY STAR.
All certified pairings (highest HSPF2 first)
| Indoor unit | Series | Cooling BTU/h | SEER2 | EER2 | HSPF2 | Heat 47°F | Heat 17°F | Heat 5°F | % of 47°F cap. at 5°F | COP 5°F | Cold climate | Refrigerant | AHRI ref. | ENERGY STAR record |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SENA-33HF-IQ | SEN series | 33,000 | 19.5 | 12 | 10 | 35,000 | 28,800 | 34,600 | 99% | 1.8 | Yes | R-410A (GWP:2088) | 211749871 | 2449923 |
"% of 47°F capacity at 5°F" = heating capacity at 5°F ÷ heating capacity at 47°F, both from the ENERGY STAR record (ENERGY STAR's cold-climate designation requires ≥70% and COP ≥1.75 at 5°F; criteria).
Rough running-cost yardstick (top-rated pairing)
| kWh per 1,000 full-load hours | Cost at U.S. avg rate | |
|---|---|---|
| Cooling (33,000 BTU/h ÷ SEER2 19.5) | 1,692 | $310 |
| Heating (35,000 BTU/h ÷ HSPF2 10) | 3,500 | $641 |
Cost estimates: cooling kWh ≈ cooling capacity × full-load hours ÷ SEER2 ÷ 1,000; heating kWh ≈ 47°F heating capacity × full-load hours ÷ HSPF2 ÷ 1,000. "Per 1,000 full-load hours" is a yardstick for comparing systems, not a prediction of your bill; your hours depend on climate, house and settings. Rate: U.S. average residential 18.31¢/kWh (EIA, July 2026 (preliminary)).
Estimate with your own hours and rate · Compare with another system
Similar-capacity single-zone units from other DIY brands
| Outdoor unit | Best SEER2 | Best HSPF2 | Best % cap. at 5°F | Cold climate |
|---|---|---|---|---|
| ACiQ ACIQ-36ZPL-HP230C | 21.2 | 11.1 | 104% | Yes |
| ACiQ ACIQ-36ZPL-HP230B | 19.4 | 11 | 100% | Yes |
| ACiQ ACIQ-36Z-HH-M5C | 23 | 10.7 | 100% | Yes |
| ACiQ ACIQ-36Z-E-HH-M4 | 22.75 | 10.5 | 93% | Yes |
| ACiQ ACIQ-36Z-HH-M4B | 22.2 | 10.3 | 97% | Yes |
| Pioneer YN036GMSI20RUG | 20 | 10.3 | 70% | Yes |
| ACiQ SC-42Z-HH-M5B | 21 | 10 | 81% | Yes |
| ACiQ ACIQ-36Z-E-M4 | 21.5 | 10 | 71% | Yes |
See Senville on the manufacturer's site (plain link, not an affiliate link)
We have not tested or installed this equipment. Data gaps: price, sound level, line-set length, warranty and installation requirements are not in ENERGY STAR data. Confirm the AHRI reference number on your quote matches a certified pairing.