Pioneer YN012GLSI24RPG: certified ratings
Cooling 11,000–12,000 BTU/h · SEER2 up to 24 · HSPF2 up to 10 · up to 75% of 47°F heating capacity at 5°F · Cold climate: Yes
ENERGY STAR lists 3 certified indoor pairings for this outdoor unit. Series: Diamante Ultra. Refrigerant: R-454B. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WT012GLSI24HLG | Diamante Ultra | 12,000 | 24 | 13 | 10 | 12,600 | 10,000 | 9,100 | 72% | 2.1 | Yes | R-454B (GWP:470 | Lower GWP) | 217048751 | 3999466 |
| CT012GLSILCFHG | Diamante Ultra | 12,000 | 21 | 11.7 | 10 | 12,000 | 10,500 | 9,000 | 75% | 1.9 | Yes | R-454B (GWP:470 | Lower GWP) | 217048759 | 3999474 |
| Diamante Ultra | 11,000 | 19 | 11 | 8.4 | 12,000 | 10,200 | 8,800 | 73% | 1.8 | Yes | R-454B (GWP:470 | Lower GWP) | 217048763 | 3999478 |
"% 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 (12,000 BTU/h ÷ SEER2 24) | 500 | $92 |
| Heating (12,600 BTU/h ÷ HSPF2 10) | 1,260 | $231 |
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 |
|---|---|---|---|---|
| Senville SENE-12EL-OH | 29.4 | 12.7 | 112% | Yes |
| MRCOOL O-ES-12-HP-C-230C-O1 | 25.4 | 11.6 | 96% | Yes |
| MRCOOL O-HH-12-HP-C-230C-O | 25.4 | 11.6 | 96% | Yes |
| MRCOOL DIYHH-12-HP-C-230D25-O | 23.5 | 10.8 | 92% | Yes |
| MRCOOL O-ES-12-HP-C-230B | 24.6 | 10.7 | 67% | No |
| ACiQ ACIQ-12ZS-HP115C | 23.2 | 10.4 | 61% | No |
| MRCOOL O-HH-12-HP-C-230A | 25.5 | 10.4 | 100% | Yes |
| MRCOOL O-HH-12-HP-C-230B | 25.5 | 10.4 | 100% | Yes |
See Pioneer 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.